tag:blogger.com,1999:blog-42310271502807275972024-03-06T08:35:09.958+01:00Gepulste Hochleistungsplasmen zur Synthese nanostrukturierter FunktionsschichtenGepulste Hochleistungsplasmen zur Synthese nanostrukturierter FunktionsschichtenSFBTR87http://www.blogger.com/profile/04633659586520515734noreply@blogger.comBlogger215125tag:blogger.com,1999:blog-4231027150280727597.post-2114993615230804152022-06-14T13:39:00.001+02:002022-06-14T13:39:14.336+02:00Working group IANiS next meeting<p><span style="font-family: Helvetica; font-size: 13px;">Ph.D. students, PostDocs, and affiliated members of SFB-TR 87 </span><span style="font-family: Helvetica; font-size: 13px;">are invited to contribute ideas and directions towards future </span><span style="font-family: Helvetica; font-size: 13px;">joint plasma and materials science research projects. Inspired </span><span style="font-family: Helvetica; font-size: 13px;">by the established insights of the past and current funding </span><span style="font-family: Helvetica; font-size: 13px;">phases, we ask every subproject to bring up the most exciting </span><span style="font-family: Helvetica; font-size: 13px;">and innovative scientific topic in a short pitch. Brainstorming </span><span style="font-family: Helvetica; font-size: 13px;">together in the group will enable to generate new ideas and </span><span style="font-family: Helvetica; font-size: 13px;">identify promising directions.</span></p>
<p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;">The workshop will proceed in two parts (this is part 2):</p>
<p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;">1) Participants review challenges presently encountered, as well as possible pathways envisioned to tackle them. (13-Jan-2022)</p>
<p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;">2) Discussion of the previously proposed topics and topics possibly discussed during the Summit Meeting, with a focus on overlap in research questions and a common agenda for potential future proposals. <b>(22-Jun-2022)</b></p><p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;">We explicitly invite all project areas of SFB-TR 87 as well as the Mercator Fellows of SFB-TR 87 and intend to foster a continued exchange towards future collaborations.</p>SFBTR87http://www.blogger.com/profile/04633659586520515734noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-32356294790715781332022-04-01T14:02:00.008+02:002022-04-01T14:15:35.506+02:00Rahel Buschhaus from project C7 wins poster prize at DPG conference 2022<div style="text-align: left;">Congratulations to Rahel Buschhaus from experimental physics II who won the poster prize in the category 'Phd students in low-temperature plasma physics'. During the annual DPG spring meeting, Mrs. Buschhaus presented a poster entitled 'Ion-induced secondary electron emission of metal surfaces analyzed in an ion beam experiment'. This was rated as the best poster by the reviewers during the poster session. She received the best rating among 25 posters in its category.</div>SFBTR87http://www.blogger.com/profile/04633659586520515734noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-67242690359085155542022-02-15T17:35:00.000+01:002022-02-15T17:35:07.190+01:00IGK lecture Alexander Kirnbauer<p>In the frame of IGK within the SFB-TR 87, Univ.Ass. Dipl.-Ing. Dr.techn. Alexander Kirnbauer from TU Wien will hold a presentation on Thursday, March 17th, 2022, 16:00 h – 18:00 h, at Materials Chemistry in Aachen. The title of his talk will be <i>Transition metal nitrides as protective coatings: From TiN to MEN to HESN</i>. The meeting will be online. All interested people are invited to join!</p>SFBTR87http://www.blogger.com/profile/04633659586520515734noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-90429717850150066492022-02-01T11:10:00.006+01:002022-02-01T11:10:39.572+01:00IKG lecture by Dr. techn. Rainer Hahn<p>As part of the IGK in SFB-TR 87, Dr. techn. Rainer Hahn, TU Wien, will give a lecture at the Materials Chemistry in Aachen on Monday, March 14, 2022, 14:00 - 16:00. The title is "Fracture properties of CrN hard coatings: Influence of the microstructure, al-loying elements, and coating architecture".</p><p> </p>SFBTR87http://www.blogger.com/profile/04633659586520515734noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-51926039602872569562022-01-03T10:19:00.002+01:002022-01-03T10:19:24.986+01:00Upcoming Seminar of the IGK of D.G. Sangiovanni<p>In the frame of IGK within the SFB-TR 87, D.G. Sangiovanni from Linköping University, Sweden will held a presentation on Wednesday, January 19th, 2022, 10:00 h – 12:00 h, at Materials Chemistry in Aachen. The title of the presentation is <i>Competition between plasticity and brittleness in refractory ceramics</i>, the meeting will be online.</p><p>All SFB-TR 87 members are invited to join the presentation.</p>SFBTR87http://www.blogger.com/profile/04633659586520515734noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-78232629617438149722021-11-22T09:48:00.000+01:002021-11-22T09:48:12.510+01:00Upcoming Seminar Sylvain Dubois<p><span style="font-family: arial;">In the frame of IGK within the SFB-TR 87 will be an online seminar on Monday, December 13th, 2021, 14:00 h – 16:00 h, at Materials Chemistry in Aachen.</span></p><p><span style="font-family: arial;">Pr. Sylvain Dubois, Université de Poitiers:</span></p><p><span style="font-family: arial;">Part I: Recent advances in MAX phase solid solutions,</span></p><p><span style="font-family: arial;">Veronique Brunet-Gauthier, Université de Poitiers:</span></p><p><span style="font-family: arial;">Part II: High-temperature oxidation of alumino-forming MAX phases: relationship between powder metallurgy processing routes, microstructural characteristics and oxidation resistance.</span></p>SFBTR87http://www.blogger.com/profile/04633659586520515734noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-49875108905776494592021-11-11T15:05:00.002+01:002021-11-11T15:05:00.174+01:00Upcoming Seminar Dr. Helmut Riedl on 16/12/2021<p style="font-stretch: normal; line-height: normal; margin: 0px; min-height: 14px;"><span style="font-family: arial;">Dr. Helmut Riedl from TU Wien is going to talk on December 16, 2021 <span style="caret-color: rgb(255, 255, 255); font-size: 14.666666984558105px;">in the frame of IGK within the SFB-TR 87 on Thursday, December 16th, 2021, 10:00 h – 12:00 h, at Materials Chemistry in Aachen.</span></span></p><p style="font-stretch: normal; line-height: normal; margin: 0px; min-height: 14px;"><span style="font-family: arial;"><br /></span></p><h3 style="text-align: left;"><span style="font-family: arial;">Part I: Durability of physical vapor deposited CrN based coatings – Insights on fracture and fatigue mechanisms </span></h3><div><span style="font-family: arial;"><br /></span></div><p style="font-stretch: normal; line-height: normal; margin: 0px; min-height: 14px;"><span style="font-family: arial;">Tailoring the intrinsic fracture characteristics of hard protective coatings towards the fatigue proper-ties of state-of-the-art bulk materials is paramount for extending the fatigue-life of coated compo-nents. Thus, an in-depth knowledge on the failure pathways of ceramic-based thin films – typically lacking in intrinsic ductility – but also coated components under cyclic loading is imperative to extend their lifetime. Within this seminar, I want to discuss novel approaches in the field of fatigue testing of thin films on the example of dc magnetron sputtered as well as cathodic arc evaporated CrN. </span></p><p style="font-stretch: normal; line-height: normal; margin: 0px; min-height: 14px;"><span style="font-family: arial;">In detail, to reveal the intrinsic fracture toughness (KIC) and critical failure aspects of thin films under various loading conditions quasi-static and cyclic bending of pre-notched, unstrained micro-cantilever beams in conjunction with in-situ synchrotron X-ray diffraction have been performed. Up to the high-cycle fatigue regime (i.e., N = 107 cycles), the failure of CrN coatings is shown to be dominated by the inherent fracture resistance instead of well-described fatigue phenomena, with further correlations drawn to apparent growth irregularities (i.e. macro particles or structural defects). The observed frac-ture behaviour is further associated with large-scale dynamic-mechanical analysis of coated Ti6Al4V platelets to consider stress fields induced by the coating-substrate interface. The results are expected to provide key-insights into the underlying mechanisms promoting crack growth in PVD coated speci-mens combining the world of micro- and macro scale testing methods. </span></p><p style="font-stretch: normal; line-height: normal; margin: 0px; min-height: 14px;"><span style="font-family: arial;"><br /></span></p><h3 style="text-align: left;"><span style="font-family: arial;">Part II: Ternary transition metal diborides: A new generation of protective coating materials? </span></h3><div><span style="font-family: arial;"><br /></span></div><p style="font-stretch: normal; line-height: normal; margin: 0px; min-height: 14px;"><span style="font-family: arial;">Future high-performance components used in aviation or energy production require customized protective coating materials to fulfil specific criteria on efficiency as well as durability. Next to well-established nitride-based coatings are boron containing systems an upcoming and highly promising coating class. Here, ternary transition metal diborides are relatively unexplored compared to their bi-nary counterparts such as hard and inelastic TiB2. Typically, these hard ceramic based coatings fail due to their extremely limited capability for plastic deformation as well as a pronounced formation of vol-atile (boron based) oxides. Within this seminar, I want to discuss these specific challenges for different binary and ternary model systems exhibiting outstanding material properties, i.e. long-term oxidation resistance at 1200 °C or a fracture toughness above 4.8 MPa·m1/2, while maintaining super hardness. To systematically describe various aspects in the design and syntheses of non-reactively sputter de-posited boride-based coating materials, a broad set of high-resolution techniques (i.e. HR-TEM, APT, ERDA, or micro-mechanical testing) but also atomistic modelling (DFT using VASP) is applied. </span></p>SFBTR87http://www.blogger.com/profile/04633659586520515734noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-7930791538404563832021-11-10T13:41:00.008+01:002021-11-10T13:41:00.147+01:00Summit Meeting of the SFB-TR 87<p> </p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjFr6AkBmEB7rP2VZ2neor3hRq7RnXpXdt1MuGQ4t-ZejqFzHQXkH-zVfSo-e-2m1wdEqNku3Xwb8OQ0S4OLJ2doNdNNHR_-U7eALLlqYKHkFMd1Wq-z5Bwfq9e-lxEUt5ArnJd3TI5iOE/s2048/2021-10-20+PDF-Info+TR+87_Seite_1.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1448" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjFr6AkBmEB7rP2VZ2neor3hRq7RnXpXdt1MuGQ4t-ZejqFzHQXkH-zVfSo-e-2m1wdEqNku3Xwb8OQ0S4OLJ2doNdNNHR_-U7eALLlqYKHkFMd1Wq-z5Bwfq9e-lxEUt5ArnJd3TI5iOE/s320/2021-10-20+PDF-Info+TR+87_Seite_1.jpg" width="226" /></a></div><div class="separator" style="clear: both; text-align: center;"><br /></div><p></p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjwBScD-YcWJ_74_L24oWMzwC70pUSxNHPJ3YAGGCRu3bPJqfx12BvQXPs6_Hh-wmwL2ybPATza5a_etnIlYoogNbOTvJhLi4P81NhykLA5vqfyYRY0tM_fNrIPXCKqqwUrI6-aTKlhe8A/s2048/2021-10-20+PDF-Info+TR+87_Seite_2.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1448" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjwBScD-YcWJ_74_L24oWMzwC70pUSxNHPJ3YAGGCRu3bPJqfx12BvQXPs6_Hh-wmwL2ybPATza5a_etnIlYoogNbOTvJhLi4P81NhykLA5vqfyYRY0tM_fNrIPXCKqqwUrI6-aTKlhe8A/s320/2021-10-20+PDF-Info+TR+87_Seite_2.jpg" width="226" /></a></div><br />SFBTR87http://www.blogger.com/profile/04633659586520515734noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-44049608122784098562021-11-09T13:05:00.002+01:002021-11-10T15:05:15.582+01:00Upcoming Project Workshop – „Future Ideas and Directions“<p><span style="font-family: Helvetica; font-size: 13px;">Ph.D. students, PostDocs, and affiliated members of SFB-TR 87 </span><span style="font-family: Helvetica; font-size: 13px;">are invited to contribute ideas and directions towards future joint </span><span style="font-family: Helvetica; font-size: 13px;">plasma and materials science research projects. Inspired by the </span><span style="font-family: Helvetica; font-size: 13px;">established insights of the past and current funding phases, we </span><span style="font-family: Helvetica; font-size: 13px;">ask every subproject to bring up the most exciting and innovative </span><span style="font-family: Helvetica; font-size: 13px;">scientific topic in a short pitch. Brainstorming together in the </span><span style="font-family: Helvetica; font-size: 13px;">group will enable to generate new ideas and identify promising </span><span style="font-family: Helvetica; font-size: 13px;">directions.</span></p><p><span style="font-family: Helvetica; font-size: 13px;"><br /></span></p>
<h4 style="text-align: left;">The workshop will proceed in two parts:</h4>
<p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;"></p><ol style="text-align: left;"><li>Participants review challenges presently encountered, as well as possible pathways envisioned to tackle them. (13.01.2022)</li><li>Discussion of the proposed topics with a focus on overlap in research questions and a common agenda for potential future proposals. (date to be defined)</li></ol><p></p><p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;"><br /></p>
<p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;">We explicitly invite all project areas of SFB-TR 87 and intend to foster a continued exchange towards future collaborations.</p><p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;"><br /></p><p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;">Registration: Via email to all organizers listed below, <span style="color: #a50703;">deadline 13.12.2021</span></p><p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;"><span style="color: #a50703;"><br /></span></p>
<h4 style="text-align: left;">Preliminary Agenda</h4><div><br /></div>
<p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;">09.45 - 10.00: Welcome</p>
<p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;">10.00 - 12.00: Pitches (< 10 minutes) + discussion</p>
<p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;">12.00 - 13.00: Break</p>
<p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;">13.00 - 1x:00: (depending on the number of participants)</p>
<p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;">1x.00: End of workshop</p><p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;"><br /></p>
<h4 style="text-align: left;">Organizers</h4><div><br /></div>
<p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;">Marcus Hans, RWTH Aachen University, hans@mch.rwth-aachen.de</p>
<p style="font-family: Helvetica; font-size: 13px; font-stretch: normal; line-height: normal; margin: 0px;">Jan Trieschmann, BTU Cottbus-Senftenberg, jan.trieschmann@b-tu.de</p>SFBTR87http://www.blogger.com/profile/04633659586520515734noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-51026795250731259362021-11-08T13:05:00.004+01:002021-11-08T13:05:39.110+01:00Upcoming Seminar Dr. Michael Tkadletz<span style="font-family: arial;">Dr. Michael Tkadletz from the Department of Materials Science, Montanuniversität Leoben will held a presentation<span style="caret-color: rgb(255, 255, 255);"> (via zoom) in the frame of IGK within the SFB-TR 87 on Wednesday, December 1st, 2021, 10:00 h – 12:00 h, at Materials Chemistry in Aachen.<br /></span> <br /><h3 style="text-align: left;">Part I:<br />Nanolamellar chemical vapor deposited fcc-Ti1-xAlxN – History, peculiarities and future perspectives</h3><div>With an Al metal ratio x of ~0.8 while still maintaining a single phase face-centered cubic (fcc) structure, chemically vapor deposited (CVD) Ti1-xAlxN represents an intriguing counterpart to physically vapor deposited (PVD) Ti1-xAlxN, which usually exhibits an fcc/wurtzitic dual phase structure already at Al metal ratios of ~0.6-0.7. Considering the metastable nature of fcc-Ti1-xAlxN and the high deposition temperatures of ~800-900 °C necessary in thermally activated CVD processes, which are commonly considered to result in conditions close to thermal equilibrium, this is even more exceptional. The formation of a predominantly fcc structure at such high Al metal ratios is related to the typically observed unique microstructure of CVD fcc-Ti1-xAlxN, consisting of comparatively large grains with alternating Ti-rich and Al-rich fcc-Ti1-xAlxN nanolamellae exhibiting a periodicity of ~10 nm. Within this talk, the historical evolution and the current state of research on CVD Ti1-xAlxN coatings will be outlined, with a special emphasis on the nanolamellar structure. Important aspects such as thermal stability, age hardening be-havior and oxidation resistance will be discussed on the basis of in situ and ex situ character-ization techniques and the results will be compared with PVD Ti1-xAlxN counterparts. Finally, the role of the deposition parameters, contradictions of recent studies and future perspectives will be illuminated.</div><div><br /></div><div><h3 style="text-align: left;">Part II: <br />Synchrotron radiation based X-ray diffraction techniques for the advanced microstruc-<br />tural characterization of transition metal nitride coatings </h3><div>Within this talk, different synchrotron radiation based X-ray diffraction (XRD) techniques which significantly contribute to the establishment of microstructure-property relationships of complex coating systems will be presented. Special emphasis will be laid on requirements, advantages and disadvantages of the different approaches including sample preparation, experimental ex-ecution, calibration as well as data treatment and evaluation. The presentation will cover high resolution 1D powder XRD for the investigation of phase composition and lattice parameters at room and elevated temperature. In situ 2D powder XRD studies performed in inert and am-bient atmosphere will be discussed to highlight the strength of modern evaluation techniques such as sequential and parametric Rietveld refinement. The potential of the unique instrumen-tal combination of in situ powder XRD with simultaneous differential scanning calorimetry to study the thermal and oxidation stability will be demonstrated, allowing to directly correlate phase changes with the recorded heat flow, while in situ experiments performed on compact coating samples reveal the macroscopic strain throughout such events. In addition, the utiliza-tion of laterally resolved diffraction techniques will be discussed on the example of cross-sec-tional X-ray nanodiffraction applied to graded coating samples. Concluding, synchrotron and lab-based XRD techniques and their pros and cons will be compared. </div></div></span>SFBTR87http://www.blogger.com/profile/04633659586520515734noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-47670143804106584712021-09-29T14:17:00.002+02:002021-09-29T14:17:34.938+02:00Upcoming Seminar from Dr. Grzegorz Greczynski<div style="text-align: left;">Liebe Kollegen und SFB-Mitglieder,<br />Dear colleagues and SFB members,</div><div style="text-align: left;"><br />hiermit laden wir Sie alle herzlich zu folgendem Vortrag (per Zoom) im Rahmen des IGK des SFB-TR 87 am Donnerstag, dem 16.12.2021, 14:00 Uhr – 16:00 Uhr, bei Materials Chemistry, RWTH Aachen, ein.</div><div style="text-align: left;"><br />Herewith we invite all of you to the presentation (via zoom) below in the frame of IGK within the SFB-TR 87 on Thursday, December 16th, 2021, 14:00 h – 16:00 h, at Materials Chemistry in Aachen.</div><div style="text-align: left;"><br /><b>Dr. Grzegorz Greczynski:</b></div><div style="text-align: left;"><br /></div><blockquote style="border: none; margin: 0 0 0 40px; padding: 0px;"><div style="text-align: left;">Part I: Toward energy-efficient physical vapor deposition: routes for replacing substrate heating during magnetron sputter deposition by employing metal ion irradiation.</div></blockquote><div style="text-align: left;"><br /></div><blockquote style="border: none; margin: 0 0 0 40px; padding: 0px;"><div style="text-align: left;">Part II: X-ray photoelectron spectroscopy studies of high-temperature oxidation of magnetron-sputtered thin films.</div></blockquote><p>View the full seminar description <a href="https://ruhr-uni-bochum.sciebo.de/s/kBllcpgACgJy6GC" target="_blank">here</a>.</p>Sascha Churhttp://www.blogger.com/profile/14333176943371542190noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-4112874455537755002021-09-15T09:50:00.002+02:002021-09-15T09:50:42.546+02:00Upcoming Seminar "Insights into initial stages of oxidation processes of protective coatings from AIMD modelling", Dr. David Holec<div style="text-align: left;">Liebe Kollegen und SFB-Mitglieder,</div><div style="text-align: left;">Dear colleagues and SFB members,<br /> <br />hiermit laden wir Sie alle herzlich zu folgendem Vortrag (per Zoom) im Rahmen des IGK des SFB-TR 87 am Mittwoch, dem 06.10.2021, 11:00 Uhr – 13:00 Uhr, bei Materials Chemistry, RWTH Aachen, ein.<br /> <br />Herewith we invite all of you to the presentation (via zoom) below in the frame of IGK within the SFB-TR 87 on Wednesday, October 6th, 2021, 11:00 h – 13:00 h, at Materials Chemistry in Aachen.<br /> <br /><b> Dr. David Holec</b><br /> <br />"Insights into initial stages of oxidation processes of protective coatings from AIMD modelling"</div><div style="text-align: left;"><br />View full seminar description <a href="https://ruhr-uni-bochum.sciebo.de/s/c3qikSKmtYZDTM8">here.</a></div>Sascha Churhttp://www.blogger.com/profile/14333176943371542190noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-35499592949965394052021-09-15T09:45:00.006+02:002021-09-15T09:52:43.779+02:00Upcoming Seminar from Stephanos Kostantinidis<div style="text-align: left;">Liebe Kollegen und SFB-Mitglieder,<br />Dear colleagues and SFB members,</div><div style="text-align: left;"><br />hiermit laden wir Sie alle herzlich zu folgendem Vortrag (per Zoom) im Rahmen des IGK des SFB-TR 87 am 08.10..2021, 09:30 – 11:30 Uhr, bei Materials Chemistry, RWTH Aachen, ein.</div><div style="text-align: left;"><br />Herewith we invite all of you to the presentation (via zoom) below in the frame of IGK within the SFB-TR 87 on October 8th, 2021, 09:30 - 11:30 h, at Materials Chemistry in Aachen.</div><div style="text-align: left;"><br /><b>Stephanos Konstantinidis, PhD</b> <br />Université de Mons<br />Laboratory for Plasma Surface Interactions (ChIPS)</div><div style="text-align: left;"><br /><h4 style="text-align: left;">Part I:</h4>High-Power Impulse Magnetron Sputtering: plasma diagnostics, film growth, and new trends</div><div style="text-align: left;"><br /><h4 style="text-align: left;">Part II:</h4>Sputtering onto liquids, from nanoparticles to polymer nanocomposites<br />Zoom links will be sent 1 day before the workshop.</div><div style="text-align: left;"><br /></div><div style="text-align: left;">View full seminar description <a href="https://ruhr-uni-bochum.sciebo.de/s/q6Jq59HhSJy9MxD">here.</a></div>Sascha Churhttp://www.blogger.com/profile/14333176943371542190noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-14269332242366344722021-08-20T11:52:00.000+02:002021-08-20T11:52:02.037+02:00Online-Workshop "Verhandeln" am 01. & 04.10.2021<h2 style="text-align: left;"> Online-Workshop „Verhandeln“</h2><p>„Verhandlungen sind essentielle Erfolgsfaktoren in verschiedensten Berufen, egal ob wir über unser Gehalt, Verträge oder Arbeitsbedingungen verhandeln oder ob wir versuchen, einen Konflikt zu lösen. Manche Leute fürchten sich vor Verhandlungen oder lehnen diese ab, weil sie nicht gerne 'feilschen', um zu 'gewinnen'. Keine Sorge. In diesem Kurs werden Sie Verhandlungs-Prinzipien kennenlernen, die gut für Ihre sozialen Beziehungen sein werden. Das ermöglicht es Ihnen, nachdrücklich aufzutreten, ohne Ellenbogen einzusetzen. Die Prinzipien sind auf eine Reihe an verschiedenen Situationen anwendbar.“</p><p><br />Diese und weitere inhaltliche Informationen unter:<br /><a href="https://naturalscience.careers/wp-content/uploads/2020/10/Verhandeln-2.pdf">https://naturalscience.careers/wp-content/uploads/2020/10/Verhandeln-2.pdf</a></p><p><br /></p><p><b>Termine:</b> Fr 01.10.2021, 09:00 bis ca. 11:30 Uhr<br />Mo 04.10.2021, 09:00 bis ca. 11:30 Uhr<br /><b>Ort: </b>Online – detaillierte Informationen nach Anmeldung<br /><b>Referent:</b> Dr. Philipp Gramlich, NaturalScience.Careers<br /><b>Zielgruppe:</b> Doktorand*innen/Postdoktorand*innen, Wissenschaftler*innen des TR 87 und CRC 1316<br /><b>Umfang: </b>Zwei live Webinare (2-2.5 h) & individuelle Arbeitsphasen, Arbeitsmaterialien, optionales Extra – individuelles Feedback<br /> </p><p><b>Anmeldung & Kontakt:</b> Vera Bracht (E-Mail: bracht@aept.rub.de)<br /><b>Anmeldeschluss: </b>03.09.2021</p>Sascha Churhttp://www.blogger.com/profile/14333176943371542190noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-63089757495683679172021-08-16T13:50:00.002+02:002021-08-20T11:46:00.348+02:00Plasmas for all<p> </p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><span style="font-size: small;"><a href="https://news.rub.de/sites/default/files/styles/nepo_teaser/public/plasma-roehre_outreach_gor5780.jpg?itok=_jD2bkzA" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="533" data-original-width="800" height="266" src="https://news.rub.de/sites/default/files/styles/nepo_teaser/public/plasma-roehre_outreach_gor5780.jpg?itok=_jD2bkzA" width="400" /></a></span></td></tr><tr><td class="tr-caption" style="text-align: center;"><span style="font-size: small;">An experiment from the plasma van: A plasma is ignited between two electrodes. Plasma layers are created at regular intervals by accelerated electrons. © Damian Gorczany<br /></span></td></tr></tbody></table><p></p><h4 style="text-align: left;"><span style="color: #0b5394;">A great many everyday technologies would not exist without plasmas. The teams of the Collaborative Research Centres want to share knowledge about their relevance with the public.</span></h4><h3 style="text-align: left;"><span style="color: #0b5394;">Driving the plasma van to school</span></h3><div style="text-align: left;">For many years, the plasma researchers at RUB have been committed to introducing plasmas to school students in different year groups. “Physics teachers sometimes conduct experiments that involve plasmas, but the word plasma doesn’t even appear in the curriculum,” explains Science Manager Dr. Marina Prenzel. In order to familiarise secondary school students with the concept of a plasma, the SFB team, in cooperation with Professor Heiko Krabbe and other physics didactics experts, has constructed various plasma experiments that can be stowed away in boxes and handily transported in a minibus. The researchers use them for interesting 90-minute workshops in sixth-form classes, where students can do their own experiments and learn about different applications of plasmas. “This is how we want to create awareness that plasmas are extremely important for many of our current technologies,” says Prenzel.</div><div style="text-align: left;"></div><div style="text-align: left;"><h3 style="text-align: left;"><span style="color: #0b5394;">Students evaluate research projects</span></h3><div style="text-align: left;"><span style="color: #0b5394;"></span>Students should not only be given the chance to learn what a plasma actually is and where it is used. Rather, the SFB team is also currently setting up a project in collaboration with the physics didactics department that aims at promoting the evaluation skills of adolescents and young adults. Here, students are to gain insights into various plasma research projects and evaluate which of these projects they would support. Another goal is to convey the significance of plasmas for the challenges of global warming.</div><div style="text-align: left;"><br /></div><div style="text-align: left;"><h3 style="text-align: left;"><span style="color: #0b5394;">More than 20 years of plasma summer school</span></h3><div style="text-align: left;"><span style="color: #0b5394;"><span style="color: black;">For more than 20 years, plasma researchers at RUB have been organising an annual international summer school for Master’s students and doctoral candidates. It originally emerged from a European Erasmus project, acquired under the auspices of the Eindhoven University of Technology. When the funding ran out in 2000, the RUB team dedicated itself to continuing it. “The school is practically always overbooked,” says co-organiser Dr. Marc Böke. The 80 to 90 participants each year and the lecturers come from all over the world. The aim of the seven-day school is to give them insights into all the major technically relevant plasmas and, at the same time, to enable them to network with each other and with established researchers in the field. “Some of the former participants are now themselves running plasma labs,” says Böke. The RUB team hopes to resume the successful format soon, despite the coronavirus situation. </span><br /></span></div><h3 style="text-align: left;"><span style="color: #0b5394;">Virtual tours through plasma labs</span></h3><div style="text-align: left;"><span style="color: #0b5394;"></span>Even though direct contact with the public is very limited during the coronavirus pandemic, the SFB team came up with a solution: The researchers made 360-degree recordings of their laboratories. This means that not only school classes, but also interested members of the public have the opportunity to take part in guided tours of the laboratories.<br /><br />On 27 October 2021, the SFB 1316 team offers a virtual public tour free of charge. Registration is possible via email (sfb1316@rub.de). Participants will be send a link to the virtual tour.</div><div style="text-align: left;"><br /></div><div style="text-align: left;"><i><span style="color: #0b5394;">~Author: Julia Weiler</span></i><br /></div></div></div>Sascha Churhttp://www.blogger.com/profile/14333176943371542190noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-46382445686538709912021-08-16T13:38:00.004+02:002021-08-20T11:45:27.249+02:00Promotionspreis für Lukas Mai<div style="text-align: justify;"><h3><span style="color: #0b5394;">Die Gesellschaft der Chemiker prämiert seine Dissertation, die Chemie, Material- und Ingenieurwissenschaften berührt.</span></h3></div><h4 style="text-align: left;"><span style="color: #0b5394;"><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><span style="font-size: small;"><a href="https://news.rub.de/sites/default/files/styles/nepo_teaser/public/2021_08_11_lukas_mai_km.jpg?itok=hAufl9mc" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="533" data-original-width="800" height="266" src="https://news.rub.de/sites/default/files/styles/nepo_teaser/public/2021_08_11_lukas_mai_km.jpg?itok=hAufl9mc" width="400" /></a></span></td></tr><tr><td class="tr-caption" style="text-align: center;"><span style="font-size: small;">Lukas Mai gehört zur Arbeitsgruppe Chemie Anorganischer Materialien; © RUB, Marquard<br /></span></td></tr></tbody></table></span><span style="color: #0b5394;"><br /> </span></h4><div style="text-align: justify;">Dr. Lukas Mai von der Fakultät für Chemie und Biochemie erhält einen Preis der Gesellschaft der Chemiker (GDCh). Dabei handelt es sich um den H.C.-Starck-Tungsten-Promotionspreis 2021 der GDCh-Fachgruppe Festkörperchemie & Materialforschung. Prämiert wird Mais Dissertation „Investigation of Amino-Alkyl Coordinated Complexes as New Precursor Class for Atomic Layer Deposition of Aluminum, Tin and Zinc Oxide Thin Films and Their Application“. Die Urkunde und das Preisgeld von 2.500 Euro werden Ende August beim Wissenschaftsforum Chemie verliehen.</div><div style="text-align: justify;"> </div><div style="text-align: left;"><h4 style="text-align: justify;"><span style="color: #0b5394;">Interdisziplinäres Umfeld</span></h4><div style="text-align: justify;"><span style="color: #0b5394;"><span style="color: black;">Die ausgezeichnete Arbeit ist in einem interdisziplinären Umfeld zwischen Chemie, Material- und Ingenieurwissenschaften in der AG Chemie Anorganischer Materialien entstanden. Dabei wurden neue Chemikalien, sogenannte Präkursoren, untersucht, die für die Abscheidung von ultradünnen Schichten mittels Atomlagenabscheidung eingesetzt wurden. Diese nanostrukturierten Dünnschichten konnten dann in aktuellen Anwendungsbereichen als Gassensoren, Gasbarriere-Schichten oder in Transistoren getestet werden. Die beiden Projekte SFB-TR 87 und EFRE-FunALD, innerhalb welcher die Arbeit angefertigt wurde, haben für diese anwendungsorientierte Forschung die ideale Plattform dargestellt.</span></span></div><div style="text-align: justify;"><span style="color: #0b5394;"><span style="color: black;"> </span></span></div><div style="text-align: justify;"><span style="color: #0b5394;"><span style="color: black;">Die Atomlagenabscheidung oder Atomic Layer Deposition wird in der Mikroelektronik unter anderem für Computerchips, Displays und Sensoren eingesetzt, um verschiedene Materialien mit der Dicke von wenigen Nanometern (ein Millionstel eines Millimeters) auf Oberflächen aufzubringen. Dafür werden chemische Verbindungen, sogenannte Präkursoren, genutzt, welche volatil, thermisch stabil und reaktiv sein müssen. In der Industrie werden häufig Alkylverbindungen eingesetzt, die diese Bedingungen zwar erfüllen, aber sich an der Luft selbst entzünden und somit hoher Sicherheitsvorkehrungen bedürfen. Lukas Mai verwendete einen sogenannten 3-(Dimethylamino)propyl (DMP) Liganden, um Aluminium-, Zinn- und Zinkverbindungen zu stabilisieren, die dadurch sicherer sind und weiterhin alle Präkursorbedingungen erfüllen.</span></span></div><div style="text-align: left;"><span style="color: #0b5394;"><span style="color: black;"> </span></span></div><div style="text-align: left;"><span style="color: #0b5394;"><span style="color: black;"><span style="color: #0b5394;">~Author: Arne Dessaul</span> </span></span><br /></div></div>Sascha Churhttp://www.blogger.com/profile/14333176943371542190noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-83106571978447613482020-11-18T12:17:00.001+01:002020-11-18T12:17:35.414+01:00SFB-TR 87 online presentations within the IGK<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiJVeZ77p9YcnuDBB0nK_IpvSYjljjeFCSrQH665P8tU2iXX4lW6BftmWNwvvKuoMVc-dn45UfMUFgVpQX7WoxKoI7ei3uPYw9OTnRGZIqRjh_fAkvnJQzf_mYjFTXXvkO_1RzF6tP8800/s2048/MCh-Vortragsank%25C3%25BCndigung_29.10.2020_Sloof-1.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1448" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiJVeZ77p9YcnuDBB0nK_IpvSYjljjeFCSrQH665P8tU2iXX4lW6BftmWNwvvKuoMVc-dn45UfMUFgVpQX7WoxKoI7ei3uPYw9OTnRGZIqRjh_fAkvnJQzf_mYjFTXXvkO_1RzF6tP8800/w452-h640/MCh-Vortragsank%25C3%25BCndigung_29.10.2020_Sloof-1.jpg" width="452" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgOPpGj1Kkyt_AwlEpnfPwSNB5LJy1LCyVVibZbI6rc4QqrRs3VV8KSaRfyXysuI4ngEV9C48gCWVDEl8kZOxQTvTseKL8kMMZUyJp74JkRHwJH8sbb1nopzvCHz8FHQQpUROJMW3bqcU8/s2048/MCh-Vortragsank%25C3%25BCndigung_29.10.2020_Sloof-2.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1448" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgOPpGj1Kkyt_AwlEpnfPwSNB5LJy1LCyVVibZbI6rc4QqrRs3VV8KSaRfyXysuI4ngEV9C48gCWVDEl8kZOxQTvTseKL8kMMZUyJp74JkRHwJH8sbb1nopzvCHz8FHQQpUROJMW3bqcU8/w452-h640/MCh-Vortragsank%25C3%25BCndigung_29.10.2020_Sloof-2.jpg" width="452" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiD2Gh4_KxuepO2nCOod1a8i_h6E9dkPEW2ZThwDQVew8Fw82sxkJIlJ0XGxz6fgMjo5nakwAWcBqWo0_3wf596cirI9aN9CHDutyHIli2Vr0mGvtHupeAdIdkFrGG6Sfx_37lNR-j5JPU/s2048/MCh-Vortragsank%25C3%25BCndigung_Greczynski.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1448" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiD2Gh4_KxuepO2nCOod1a8i_h6E9dkPEW2ZThwDQVew8Fw82sxkJIlJ0XGxz6fgMjo5nakwAWcBqWo0_3wf596cirI9aN9CHDutyHIli2Vr0mGvtHupeAdIdkFrGG6Sfx_37lNR-j5JPU/w453-h640/MCh-Vortragsank%25C3%25BCndigung_Greczynski.jpg" width="453" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjVROLKzNWsmWyPnBIFSw1CjVhADdtnxw-Z_FcMUc4PV13420BgZDCRibs7BVHQvaQGRoVtCvjJFSa5bipLdskCJxpTC01wJB6DD6Qh_LFfeyMM8l4RUi42TvX0SbZURmBwWBdRSZMalsM/s2048/MCh-Vortragsankundigung_Holec_24.11.2020-1.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1448" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjVROLKzNWsmWyPnBIFSw1CjVhADdtnxw-Z_FcMUc4PV13420BgZDCRibs7BVHQvaQGRoVtCvjJFSa5bipLdskCJxpTC01wJB6DD6Qh_LFfeyMM8l4RUi42TvX0SbZURmBwWBdRSZMalsM/w452-h640/MCh-Vortragsankundigung_Holec_24.11.2020-1.jpg" width="452" /></a></div><br /><p><br /></p>Sascha Churhttp://www.blogger.com/profile/14333176943371542190noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-53272307756425623742020-07-11T12:10:00.003+02:002020-07-11T12:10:39.601+02:002020 Bill Sproul Award and Honorary Lecture Recipient Jochen M. 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<a href="https://icmctf2020.avs.org/wp-content/uploads/2019/11/Jochen-Schneider-226x300.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="300" data-original-width="226" src="https://icmctf2020.avs.org/wp-content/uploads/2019/11/Jochen-Schneider-226x300.jpg" /></a><b>Jochen M. Schneider</b>, Ph.D., is Chair and Professor of Materials Chemistry at RWTH Aachen University, Germany.</div>
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The Bill Sproul Award and Honorary ICMCTF lectureship is to recognize the achievements of a mid-career researcher who has made outstanding scientific and/or technological contributions in areas of interest to the Advanced Surface Engineering Division (ASED) of the AVS, with emphasis in the fields of surface engineering, thin films, and related topics.</div>
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Find the original <a href="https://icmctf2020.avs.org/bill-sproul-award-and-honorary-icmctf-lecture-recipient/">Link</a> here.</div>
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<br />Sascha Churhttp://www.blogger.com/profile/14333176943371542190noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-61486858063164142502020-07-11T12:05:00.002+02:002020-07-11T12:05:40.990+02:00Lukas Mai and colleagues on new chemistry for ultra-thin gas sensors <table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: right; margin-left: 1em; text-align: right;"><tbody>
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A Bochum team has developed a new process for zinc oxide coatings that can be used in nitrogen oxide sensors and as protective coatings on plastics.
The application of zinc oxide coatings in industry is manifold and ranges from the protection of perishable goods from air to the detection of toxic nitrogen oxides. Such layers can be produced by means of atomic layer deposition (ALD), which normally uses precursor chemicals, so-called precursors, which ignite immediately in air. An interdisciplinary research team at the Ruhr-Universität Bochum (RUB) has now established a new production process based on non-self-igniting precursors that takes place at such low temperatures that plastics can also be coated. The team reported in the magazine "Small", which selected the article for its title in the issue of 4 June 2020</div>
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To produce a sensor for nitrogen dioxide (NO2), a thin layer of nanostructured zinc oxide (ZnO) must be applied to a sensor substrate and then integrated into an electrical component. Prof. Dr. Anjana Devi's team used ALD to apply ultra-thin ZnO layers to such sensor substrates.</div>
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In general, ALD processes are used in industry to miniaturize electrical components by means of ultra-thin layers, some of which are only a few atomic layers thick, while at the same time increasing the efficiency. This requires precursors that react on a surface in the ALD process to form a thin layer. "The chemistry behind ALD processes is therefore essential and has a great influence on the resulting layers," emphasizes Anjana Devi.</div>
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<span style="color: #073763;">Safe handling and highest quality </span></h3>
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In industry, ZnO coatings have so far been produced with an extremely reactive zinc precursor that ignites immediately in air, experts call it pyrophoric. "The key to developing a safe ALD process was to research a new, non-pyrophoric precursor that can be handled safely and is capable of producing ZnO coatings of the highest quality," said Lukas Mai, lead author of the study. "The challenge was to find an alternative chemistry capable of replacing pyrophoric, industrially used compounds".</div>
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The special feature of the new process is that it is even possible at low temperatures, which makes it possible to coat plastics. Thus, the new process is not only suitable for the production of gas sensors, but also for gas barrier layers. These are applied to plastic in industry and are used to protect sensitive goods such as food and medicines from air.</div>
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This was made possible by the interdisciplinary cooperation of natural scientists and engineers. The team included the working groups Chemistry of Inorganic Materials headed by Anjana Devi and General Electrical Engineering and Plasma Technology headed by Prof. Dr. Peter Awakowicz, researchers from Heinrich Heine University Düsseldorf and the company Paragon.</div>
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The work was funded by the European Fund for Regional Development (EFRE) in the Funald project and by the German Research Foundation in the framework of the Collaborative Research Centre/Transregional TR87. Lukas Mai was supported by the Stiftung der Deutschen Wirtschaft.</div>
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<span style="color: #073763;">~Author Maike Drießen </span></div>
Sascha Churhttp://www.blogger.com/profile/14333176943371542190noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-91459234220980210202020-06-29T10:58:00.000+02:002020-06-29T10:58:19.281+02:00Dr.-Ing. Schmidt is awarded for his outstanding dissertation<table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: right; margin-left: 1em; text-align: right;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj1US_9s75N1hQoF_uPj7menkbjiZRE4b5PijCRdUkQ8lzOKTzRFjKY4VFwuQ8ORD8H9nooW7WCBr4pAFHqrK51EbdZ71j3-Eexqe5lD_Xt3q7qdyvHL0IVL_jv9Pk7A-7iDzUIFIMqADA/s1600/2020_06_26_eickhoffpreis_schmidt_km.jpeg" imageanchor="1" style="clear: right; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><img border="0" data-original-height="853" data-original-width="1280" height="213" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj1US_9s75N1hQoF_uPj7menkbjiZRE4b5PijCRdUkQ8lzOKTzRFjKY4VFwuQ8ORD8H9nooW7WCBr4pAFHqrK51EbdZ71j3-Eexqe5lD_Xt3q7qdyvHL0IVL_jv9Pk7A-7iDzUIFIMqADA/s320/2020_06_26_eickhoffpreis_schmidt_km.jpeg" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">© RUB, Marquard</td></tr>
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Technical plasmas are among the things that have a significant influence on the world around us, without many people knowing about it. "You can, for example, process surfaces with plasmas; but they are crucial in the production of modern computer chips, which are built into almost all modern technical devices - from cars to smart phones," explains Frederik Schmidt. "A better understanding of this technology leads to innovations that make our lives easier, network people and shape our future.</div>
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In his dissertation, he investigated how the energy gets into a plasma. The path from the power socket to nanometer-sized semiconductor tracks is being investigated by various specialists and is in part well understood. Frederik Schmidt has brought together two of these specialist areas: the electrical network between the power socket and the plasma on the one hand, and detailed plasma simulations on the other. This makes it possible to investigate the relationship between the two. "For example, I have looked at the paths along which energy flows and how much is lost on its way into the plasma. That is sometimes quite a lot," says the researcher. The results help to make systems and superstructures more efficient and thus more economical and ecological. In addition, he has developed his own electrical network that can be implemented for certain applications with considerably less effort and losses than before. "I was able to show theoretically that this works. Colleagues in France were then able to prove in experiments that it is also practically possible to build something like this," says Schmidt</div>
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<span style="color: #073763;">~Author: Meike Drießen</span>Sascha Churhttp://www.blogger.com/profile/14333176943371542190noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-12596714091376236042020-06-15T11:39:00.002+02:002020-06-15T11:39:57.352+02:00An unusual cobalt compound<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://news.rub.de/sites/default/files/styles/nepo_teaser/public/2020_06_08_km_zanders_devi-1.jpg?itok=Sqq5_Dwz" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="533" data-original-width="800" height="266" src="https://news.rub.de/sites/default/files/styles/nepo_teaser/public/2020_06_08_km_zanders_devi-1.jpg?itok=Sqq5_Dwz" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">David Zanders and Anjana Devi (right) are happyabouut the extraordinary discovery. <span class="bildzeile-copyright">© RUB, Marquard</span></td></tr>
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<span style="font-weight: normal;">Searching for small but stable cobalt compounds, a team has discovered a complex that is relevant for material research and exhibits properties that have not been reported for almost 50 years for a compound alike</span></div>
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A research team from Ruhr-Universität Bochum (RUB) and Carleton University in Ottawa has manufactured a novel, highly versatile cobalt compound. The molecules of the compound are stable, extremely compact and have a low molecular weight so that they can be evaporated for the production of thin films. Accordingly, they are of interest for applications such as battery or accumulator production. Because of their special geometry, the compound also has a very unusual spin configuration of ½. A cobalt compound like that was last described in 1972. The team published their report in the journal Angewandte Chemie International Edition from 5 May 2020.<br />
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<span style="color: #073763;">The geometry makes the difference</span></h3>
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“The few known cobalt(IV) compounds exhibit high thermal instability and are very sensitive towards air and moisture exposure. This impedes their implementation as model systems for broad reactivity studies or as precursors in material synthesis,” explains lead author David Zanders from the Inorganic Materials Chemistry research group in Bochum, headed by Professor Anjana Devi. In his ongoing binational PhD project, which has been agreed upon by Ruhr University and Carleton University by a Cotutelle agreement, David Zanders and his Canadian colleagues Professor Seán Barry and Goran Bačić discovered a cobalt(IV) compound that does not only possess the aforementioned properties but also exhibits an unusually high stability.</div>
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Based on theoretical studies, the researchers demonstrated that a nearly orthogonal embedding of the central cobalt atom in a tetrahedrally arranged environment of connected atoms – so-called ligands – is the key to stabilising the compound. This specific geometric arrangement within the molecules of the new compound also enforces the unusual electron spin of the central cobalt atom. “Under these extraordinary circumstances, the spin can only be ½,” points out David Zanders. A cobalt compound with this spin state and similar geometry has not been described for almost 50 years.</div>
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Following a series of experiments, the team also showed that the compound has a high volatility and can be evaporated at temperatures of up to 200 degrees Celsius with virtually no decomposition, which is unusual for cobalt(IV).<br />
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<span style="color: #073763;">Promising candidate for ultra-thin layers</span></h3>
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Individual molecules of the compound dock onto surfaces in a controllable manner after evaporation. “Thus, the most fundamental requirement of a potential precursor for atomic layer deposition has been fulfilled,” asserts Seán Barry. “This technique has increasingly gained in importance in industrial material and device manufacturing, and our cobalt(IV) compound is the first of its kind that is fit for this purpose.” “Our discovery is even more exciting as the high-valent oxides and sulfides of cobalt are considered to have great potential for modern battery systems or microelectronics,” adds Anjana Devi. Following frequent charging and discharging, electrodes in rechargeable batteries become more and more unstable, which is why researchers are looking for more stable and, consequently, more durable materials for them. At the same time, they also focus on using new manufacturing techniques.</div>
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“This binational collaboration, which was initiated by David Zanders, has pooled the creativity and complementary expertise of chemical engineers from Bochum and Ottawa. All this has produced unexpected results and was certainly the key to success,” concludes Anjana Devi.</div>
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<span style="color: #073763;"><span style="background-color: white;">~Author: Meike Drießen; Translator Donata Zuber</span></span><span style="background-color: white;"><br /></span></div>
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Sascha Churhttp://www.blogger.com/profile/14333176943371542190noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-77287561751661664262020-05-20T11:11:00.001+02:002020-06-03T13:47:46.190+02:00Journal of applied physics honours research of Sebastian Wilczek<div style="text-align: justify;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjrnd82MQUHJi9h6wUYCP3T7NjmJuJAjh8FJUn_Xwh4plvPoA7BWLJKSn1jiTOzXAhWfOzU5aLT9AhyphenhyphenbrCoERfRa_PYJZZXHzSt4hz19BR_I00aCAdWfPGIYLh3bvXSUpfSmG64UxG92zE/s1600/JAP+127%252818%2529+Cover-1.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="1600" data-original-width="1209" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjrnd82MQUHJi9h6wUYCP3T7NjmJuJAjh8FJUn_Xwh4plvPoA7BWLJKSn1jiTOzXAhWfOzU5aLT9AhyphenhyphenbrCoERfRa_PYJZZXHzSt4hz19BR_I00aCAdWfPGIYLh3bvXSUpfSmG64UxG92zE/s320/JAP+127%252818%2529+Cover-1.jpg" width="241" /></a>In order to honour particularly outstanding scientific work, the cover
page of each issue is highlighted with grapics by author of an article
in the current issue. The editorial office of the Journal of Applied
Physics chose a cover article of Sebastian Wilczek for the recent volume.</div>
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In volume 127 of the journal, the article <i>Electron dynamics in low pressure capacitively coupled radio frequency discharges</i>
of Sebastian Wilczek et al. is published.
The content of the article is the fundamental physics of electron
dynamics in a low pressure electronpositive argon discharge by means of
particle-in-cell/Monte Carlo collisions simulaltions. The interplay
between the fundamental plasma parameters (densities, fields, currents
and temperatures) is explained by analysis with respect to the spartial
and temporal dynamics. Congratulations in the success!</div>
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<span style="color: #073763;">~Marina Prenzel, public relations CRCs</span>Sascha Churhttp://www.blogger.com/profile/14333176943371542190noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-82688703496784156302020-03-09T12:17:00.001+01:002020-03-09T12:17:41.940+01:00SFB-TR 87 Workshops 25. - 27.03.Vom 25.03. bis 27.03 finden in Aachen Workshops der Projektbereiche A, B und C statt. Genauere Informationen zum Ablauf des Treffen können folgender Liste entnommen werden:<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjvFAs3aTz4EkROB9uByeSQfLH_c6iP9bZCKZdZqsMw8QyS7XGAja-6-t8_8B6QiP9NmyiZsNT3il6D1xCg8sptn9CjE59gLCrSqRWinu8RgK-WoGDgeyoyQddxIB2PkZVzrGc51gtP8Vs/s1600/0002.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1132" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjvFAs3aTz4EkROB9uByeSQfLH_c6iP9bZCKZdZqsMw8QyS7XGAja-6-t8_8B6QiP9NmyiZsNT3il6D1xCg8sptn9CjE59gLCrSqRWinu8RgK-WoGDgeyoyQddxIB2PkZVzrGc51gtP8Vs/s640/0002.jpg" width="452" /></a></div>
<br />Sascha Churhttp://www.blogger.com/profile/14333176943371542190noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-88686155470377956792020-02-25T13:12:00.001+01:002020-02-25T13:12:16.236+01:00Einladung/Invitation: "Autonomous crack healing in MAX phase ceramics"Die SFB-TR 87 Mitglieder sind herzlich zum Vortrag <span lang="EN-GB">"A</span><span lang="EN-GB">utonomous crack healing in MAX phase ceramics" von </span><span lang="EN-GB"><span lang="EN-GB">Prof. Willem G. Sloof von der Delft University of Technology eingeladen.</span></span> Dieser findet am Donnerstag den 19.03.2020 um 14 Uhr findet im Rahmen der IGK des SFB-TR 87 in der RWTH Aachen bei Meterials Chemistry statt.<br />
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The SFB-TR 87 members are welcomed to attend the talk "<span lang="EN-GB">A</span><span lang="EN-GB">utonomous crack healing in MAX phase ceramics" held by </span><span lang="EN-GB"><span lang="EN-GB"><span lang="EN-GB">Willem G. Sloof from Delft University of Technology. It takes place on Thursday, the 19th of March, 2020 at 14:00 h, at Materials Chemistry, RWTH Aachen.</span></span></span>Sascha Churhttp://www.blogger.com/profile/14333176943371542190noreply@blogger.comtag:blogger.com,1999:blog-4231027150280727597.post-39979091403341799552020-02-21T13:16:00.001+01:002020-02-21T13:16:11.219+01:00Plasma workshop at Bo.Ing 2020<div style="text-align: justify;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh_Sh3pAsJyzoyreowBNpGEzjEOuUUz9xPOPnyQEm1PDIZPSMUEQNuJSCDdUZKY01OnPgMVMjJeVQ-jpPY-VyZAAHsxcgXSHmoxHmA54hsq0nYqhM4cqOt7NfZIeq9rDQW4uQjoiQGvWBA/s1600/02-19+BoIng2.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="1600" data-original-width="900" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh_Sh3pAsJyzoyreowBNpGEzjEOuUUz9xPOPnyQEm1PDIZPSMUEQNuJSCDdUZKY01OnPgMVMjJeVQ-jpPY-VyZAAHsxcgXSHmoxHmA54hsq0nYqhM4cqOt7NfZIeq9rDQW4uQjoiQGvWBA/s400/02-19+BoIng2.jpg" width="225" /></a><span style="font-weight: normal;">Der SFB-TR 87 und CRC 1316 haben zusammen am Workshop Programm der Bo.Ing 2020 teilgenommen. Auf dem Bochumer Ingenieurstreffen "Bo.Ing", wird Schülern durch Workshops, Laborführungen und Diskussionsrunden ein Einblick in die Ingenieurswisenschaften ermöglicht. Die Veranstaltung wird vom zdi Netzwerk IST.Bochum.NRW organisiert und zusammen mit den Universitäten aus Bochum und Umgebung durchgeführt.</span></div>
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<span style="font-weight: normal;">Im Plasma Workshop konnte sechszehn Schülern die Grundlagen von Plasmen und deren Anwendung näher gebracht werden. In praxisorientierten Übungen, waren die Mädchen und Jungs in der Lage selbst Experimente durchzuführen</span></div>
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The SFB-TR 87 and CRC 1316 joined the workshop
program of the Bo.Ing 2020. At the Bochum engineering forum "BO.Ing",
pupils are given an insight into the engineering sciences in workshops,
laboratory tours and discussion groups. The event is organised by the
zdi network IST.Bochum.NRW and is implemented in cooperation with
universities from Bochum and the surrounding area.</div>
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With plasma workshop, sixteen pupils in two different workshop
learned the basic ideas about plasma and its applcation. In hands-on
activities, the girls and boys were able to perform their own
experiments.</div>
Sascha Churhttp://www.blogger.com/profile/14333176943371542190noreply@blogger.com