Prof. Dr. Alfred Ludwig

Prof. Dr.-Ing. Alfred Ludwig studied mechanical engineering at the University of Karlsruhe, specializing in materials science and microsystems technology. In 1999 he received the title "Dr.-Ing." from the University of Karlsruhe for his research on nanoscale magnetoelastic multilayer coatings, carried out at the Institute of Materials Research of the Forschungszentrum Karlsruhe. He then moved to the caesar research center in Bonn, in the "Smart Materials" group, where he developed high-frequency magnetoelastic coatings and devices. From December 2002 to September 2007, he was junior professor for "Werkstoffe der Mikrotechnik" at the Faculty of Mechanical Engineering of the Ruhr University Bochum (RUB) and at the same time head of the caesar research group "Combinatorial Materials Science". From October 2007 to 2012, he received a Heisenberg Professorship of the German Research Foundation for "Materials of Microtechnology" at RUB. Since the end of 2012, he has been a chair holder at RUB. From 2011 to 2016, he was coordinator of the inter-faculty "Materials Research Department" at RUB. He initiated and organized the new research building ZGH (Center for Interfacially Dominated High Performance Materials), of which he is scientific director since 2019. His research interests include high-throughput processes and MEMS tools for materials science, nanoscale layers, multifunctional materials (e.g., conventional and ferromagnetic shape memory alloys), and new materials for energy applications (e.g., materials for solar water splitting, electrocatalysts, thermoelectrics, ...). He has published more than 340 articles, more than 300 of them in peer-reviewed journals. Since 2022 he is Director of the Research Center Future Energy Materials and Systems (RC FEMS). He is PI in a new ERC Synergy Grant project (DEMI) and spokesperson of the new SFB 1625 (both projects start in 2024).

https://www.mdi.ruhr-uni-bochum.de/mdi/index.html.en

Publications

  • 2011
2011
  • article
article2011Dominik SchäferCezarina MardareAlan SavanMiguel D. SánchezBastian MeiWei XiaMartin MuhlerAlfred LudwigWolfgang Schuhmann

High-throughput characterization of Pt supported on thin film oxide material libraries applied in the oxygen reduction reaction

Dominik Schäfer, Cezarina Mardare, Alan Savan, Miguel D. Sánchez, Bastian Mei, Wei Xia, Martin Muhler, Alfred Ludwig, Wolfgang Schuhmann:
Analytical Chemistry (2011)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-79954578103&doi=10.1021%2fac102303u&partnerID=40&md5=3c87ca75d78e10dc8bd50db44838fe45https://dx.doi.org/10.1021/ac102303u
2011
  • article
article2011Y.W. LaiS. HamannM. EhmannA. Ludwig

High-throughput characterization of stresses in thin film materials libraries using Si cantilever array wafers and digital holographic microscopy

Y.W. Lai, S. Hamann, M. Ehmann, A. Ludwig:
Review of Scientific Instruments (2011)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-79960186810&doi=10.1063%2f1.3600594&partnerID=40&md5=47c7ca8f22a950c693d062956c049bdahttps://dx.doi.org/10.1063/1.3600594
2011
  • article
article2011Joachim SonntagPawel ZiolkowskiAlan SavanMichael KieschnickAlfred Ludwig

High-throughput characterization of the seebeck coefficient of a-(Cr 1 - XSix)1 - yOy thin film materials libraries as verification of the extended thermopower formula

Joachim Sonntag, Pawel Ziolkowski, Alan Savan, Michael Kieschnick, Alfred Ludwig:
Journal of Physics Condensed Matter (2011)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-79959954397&doi=10.1088%2f0953-8984%2f23%2f26%2f265501&partnerID=40&md5=4b1d041d4d4e8a9e8a782db1aa6df2ddhttps://dx.doi.org/10.1088/0953-8984/23/26/265501
2011
  • article
article2011Nikolay ZotovJürgen FeydtAlan SavanAlfred LudwigJohannes Von Borany

Interdiffusion in Fe/Pt multilayers: In situ high temperature synchrotron radiation reflectivity study

Nikolay Zotov, Jürgen Feydt, Alan Savan, Alfred Ludwig, Johannes Von Borany:
Advanced Engineering Materials (2011)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-79957769549&doi=10.1002%2fadem.201000358&partnerID=40&md5=f89ac9755d8652d1a90c0da3134d69b6https://dx.doi.org/10.1002/adem.201000358
2011
  • conference
conference2011Masahiro YamaguchiYasushi EndoNoiyuki SatoAlfread Ludwig

Overview of RF high-permeability ferromagnetic thin films and its application to a new ferromagnetic/conductive multilayer to suppress skin effect in RF on-chip conductors

Masahiro Yamaguchi, Yasushi Endo, Noiyuki Sato, Alfread Ludwig:
European Microwave Week 2011: "Wave to the Future", EuMW 2011, Conference Proceedings - 6th European Microwave Integrated Circuit Conference, EuMIC 2011 (2011)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84855807142&partnerID=40&md5=bd254d709b366f5ab7ef3e7b46068dd1
2011
  • article
article2011D. KönigR. ZarnettaA. SavanH. BrunkenA. Ludwig

Phase transformation, structural and functional fatigue properties of Ti-Ni-Hf shape memory thin films

D. König, R. Zarnetta, A. Savan, H. Brunken, A. Ludwig:
Acta Materialia (2011)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-79953193729&doi=10.1016%2fj.actamat.2011.01.066&partnerID=40&md5=eaf8b5cf5d5042b8fd0e4a26d9288074https://dx.doi.org/10.1016/j.actamat.2011.01.066
2011
  • article
article2011Robert MeyerSven HamannMichael EhmannDennis KönigSigurd ThienhausAlan SavanAlfred Ludwig

Small-scale deposition of thin films and nanoparticles by microevaporation sources

Robert Meyer, Sven Hamann, Michael Ehmann, Dennis König, Sigurd Thienhaus, Alan Savan, Alfred Ludwig:
Journal of Microelectromechanical Systems (2011)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-79551613760&doi=10.1109%2fJMEMS.2010.2090506&partnerID=40&md5=fe115746e6c5fa36c3593479ab459fddhttps://dx.doi.org/10.1109/JMEMS.2010.2090506
2011
  • article
article2011Pio John S. BuenconsejoRobert ZarnettaAlfred Ludwig

The effects of grain size on the phase transformation properties of annealed (Ti/Ni/W) shape memory alloy multilayers

Pio John S. Buenconsejo, Robert Zarnetta, Alfred Ludwig:
Scripta Materialia (2011)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-79953048057&doi=10.1016%2fj.scriptamat.2011.02.021&partnerID=40&md5=6a329510c4e3c485c4a086090a12aa90https://dx.doi.org/10.1016/j.scriptamat.2011.02.021
  • 2010
2010
  • article
article2010Christoph BechtoldJörg BuschbeckAndriy LotnykBurak ErkartalSven HamannChristiane ZamponiLudwig SchultzAlfred LudwigLorenz KienleSebastian FählerEckhard Quandt

Artificial single variant martensite in freestanding Fe70Pd 30 films obtained by coherent epitaxial growth

Christoph Bechtold, Jörg Buschbeck, Andriy Lotnyk, Burak Erkartal, Sven Hamann, Christiane Zamponi, Ludwig Schultz, Alfred Ludwig, Lorenz Kienle, Sebastian Fähler, Eckhard Quandt:
Advanced Materials (2010)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954845319&doi=10.1002%2fadma.201000599&partnerID=40&md5=435126211ec58e39bb71b0395cf378f5https://dx.doi.org/10.1002/adma.201000599
2010
  • article
article2010Andrei Ionut MardareAlfred LudwigAlan SavanAndreas Dirk WieckAchim Walter Hassel

Combinatorial investigation of Hf-Ta thin films and their anodic oxides

Andrei Ionut Mardare, Alfred Ludwig, Alan Savan, Andreas Dirk Wieck, Achim Walter Hassel:
Electrochimica Acta (2010)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-77958112112&doi=10.1016%2fj.electacta.2010.03.066&partnerID=40&md5=a8c62c7bf58d6e4a1a97d6299b1f2731https://dx.doi.org/10.1016/j.electacta.2010.03.066
2010
  • article
article2010Iris KockSven HamannHayo BrunkenTobias EdlerS.G. MayrAlfred Ludwig

Development and characterization of Fe70Pd30 ferromagnetic shape memory splats

Iris Kock, Sven Hamann, Hayo Brunken, Tobias Edler, S.G. Mayr, Alfred Ludwig:
Intermetallics (2010)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-77950021848&doi=10.1016%2fj.intermet.2009.12.019&partnerID=40&md5=7fc8926f90535e07de1b883fe7c0a31ehttps://dx.doi.org/10.1016/j.intermet.2009.12.019
2010
  • article
article2010R. ZarnettaM. EhmannA. SavanA. Ludwig

Identification of optimized Ti-Ni-Cu shape memory alloy compositions for high-frequency thin film microactuator applications

R. Zarnetta, M. Ehmann, A. Savan, A. Ludwig:
Smart Materials and Structures (2010)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-77953564892&doi=10.1088%2f0964-1726%2f19%2f6%2f065032&partnerID=40&md5=3f3935daf77e1d0bef487d4414a432cbhttps://dx.doi.org/10.1088/0964-1726/19/6/065032
2010
  • article
article2010Robert ZarnettaRyota TakahashiMarcus L. YoungAlan SavanYasubumi FuruyaSigurd ThienhausBurkhard MaaßMustafa RahimJan FrenzelHayo BrunkenYong S. ChuVijay SrivastavaRichard D. JamesIchiro TakeuchiGunther EggelerAlfred Ludwig

Identification of quaternary shape memory alloys with near-zero thermal hysteresis and unprecedented functional stability

Robert Zarnetta, Ryota Takahashi, Marcus L. Young, Alan Savan, Yasubumi Furuya, Sigurd Thienhaus, Burkhard Maaß, Mustafa Rahim, Jan Frenzel, Hayo Brunken, Yong S. Chu, Vijay Srivastava, Richard D. James, Ichiro Takeuchi, Gunther Eggeler, Alfred Ludwig:
Advanced Functional Materials (2010)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-77953830324&doi=10.1002%2fadfm.200902336&partnerID=40&md5=cced5c362c47e5f1d31f96fd7c624c93https://dx.doi.org/10.1002/adfm.200902336
2010
  • article
article2010Dennis KönigMichael EhmannSigurd ThienhausAlfred Ludwig

Micro- to nanostructured devices for the characterization of scaling effects in shape-memory thin films

Dennis König, Michael Ehmann, Sigurd Thienhaus, Alfred Ludwig:
Journal of Microelectromechanical Systems (2010)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957577800&doi=10.1109%2fJMEMS.2010.2067441&partnerID=40&md5=9411b490d6b1cb79ab2eaf9cbec34703https://dx.doi.org/10.1109/JMEMS.2010.2067441
2010
  • article
article2010S. HamannM.E. GrunerS. IrsenJ. BuschbeckC. BechtoldI. KockS.G. MayrA. SavanS. ThienhausE. QuandtS. FählerP. EntelA. Ludwig

The ferromagnetic shape memory system Fe-Pd-Cu

S. Hamann, M.E. Gruner, S. Irsen, J. Buschbeck, C. Bechtold, I. Kock, S.G. Mayr, A. Savan, S. Thienhaus, E. Quandt, S. Fähler, P. Entel, A. Ludwig:
Acta Materialia (2010)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-79960195277&doi=10.1016%2fj.actamat.2010.07.011&partnerID=40&md5=199aae103b576f7f45e3e97825e32f13https://dx.doi.org/10.1016/j.actamat.2010.07.011
  • 2009
2009
  • article
article2009Andrei Ionut MardareAlan SavanAlfred LudwigAndreas Dirk WieckAchim Walter Hassel

A combinatorial passivation study of Ta-Ti alloys

Andrei Ionut Mardare, Alan Savan, Alfred Ludwig, Andreas Dirk Wieck, Achim Walter Hassel:
Corrosion Science (2009)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-67349114938&doi=10.1016%2fj.corsci.2008.12.003&partnerID=40&md5=1cbe5936de1d9b3af7e53ab7622a5d78https://dx.doi.org/10.1016/j.corsci.2008.12.003
2009
  • article
article2009Roman VitushinskySam SchmitzAlfred Ludwig

Bistable thin-film shape memory actuators for applications in tactile displays

Roman Vitushinsky, Sam Schmitz, Alfred Ludwig:
Journal of Microelectromechanical Systems (2009)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-60449111074&doi=10.1109%2fJMEMS.2008.2009816&partnerID=40&md5=5a88b1adef3a642d89139f943098b3f9https://dx.doi.org/10.1109/JMEMS.2008.2009816
2009
  • article
article2009Andrei Ionut MardareAlfred LudwigAlan SavanAndreas Dirk WieckAchim Walter Hassel

High-throughput study of the anodic oxidation of Hf-Ti thin films

Andrei Ionut Mardare, Alfred Ludwig, Alan Savan, Andreas Dirk Wieck, Achim Walter Hassel:
Electrochimica Acta (2009)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-65749088313&doi=10.1016%2fj.electacta.2009.01.016&partnerID=40&md5=c7c9a73d22b38d855787ed1f93ac0ea6https://dx.doi.org/10.1016/j.electacta.2009.01.016
2009
  • article
article2009Andrei Ionut MardareAlan SavanAlfred LudwigAndreas Dirk WieckAchim Walter Hassel

High-throughput synthesis and characterization of anodic oxides on Nb-Ti alloys

Andrei Ionut Mardare, Alan Savan, Alfred Ludwig, Andreas Dirk Wieck, Achim Walter Hassel:
Electrochimica Acta (2009)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-69249106892&doi=10.1016%2fj.electacta.2009.02.104&partnerID=40&md5=62407e5851cc6de47b9c041cc638c3achttps://dx.doi.org/10.1016/j.electacta.2009.02.104
2009
  • article
article2009R. ZarnettaE. ZelayaG. EggelerA. Ludwig

Influence of precipitates on the thermal hysteresis of Ti-Ni-Pd shape memory thin films

R. Zarnetta, E. Zelaya, G. Eggeler, A. Ludwig:
Scripta Materialia (2009)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-58049204306&doi=10.1016%2fj.scriptamat.2008.11.001&partnerID=40&md5=da3aed10d8b8e427c2b670391a480384https://dx.doi.org/10.1016/j.scriptamat.2008.11.001
2009
  • article
article2009Christian KleverMichael StüberHarald LeisteEberhard NoldKlaus SeemannSven UlrichHayo BrunkenAlfred LudwigClaas ThedeEckhard Quandt

Multifunctional FeCo/TiN multilayer thin films with combined magnetic and protective properties

Christian Klever, Michael Stüber, Harald Leiste, Eberhard Nold, Klaus Seemann, Sven Ulrich, Hayo Brunken, Alfred Ludwig, Claas Thede, Eckhard Quandt:
Advanced Engineering Materials (2009)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-73849120791&doi=10.1002%2fadem.200900214&partnerID=40&md5=8657d773d17d47bc8ea71b0034fc377ehttps://dx.doi.org/10.1002/adem.200900214
2009
  • article
article2009R. ZarnettaD. KönigC. ZamponiA. AghajaniJ. FrenzelG. EggelerA. Ludwig

R-phase formation in Ti39Ni45Cu16 shape memory thin films and bulk alloys discovered by combinatorial methods

R. Zarnetta, D. König, C. Zamponi, A. Aghajani, J. Frenzel, G. Eggeler, A. Ludwig:
Acta Materialia (2009)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-67650112869&doi=10.1016%2fj.actamat.2009.05.014&partnerID=40&md5=558a75c1638624500b02f7112f3a04c1https://dx.doi.org/10.1016/j.actamat.2009.05.014
2009
  • article
article2009Cezarina C. MardareMichael SpiegelAlan SavanAlfred Ludwig

Thermally oxidized Mn-Co thin films as protective coatings for SOFC interconnects

Cezarina C. Mardare, Michael Spiegel, Alan Savan, Alfred Ludwig:
Journal of the Electrochemical Society (2009)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-70350742941&doi=10.1149%2f1.3240597&partnerID=40&md5=ea43e6d443e73b06abe4dd7025ccc326https://dx.doi.org/10.1149/1.3240597
  • 2008
2008
  • article
article2008R. LöbelS. ThienhausA. SavanA. Ludwig

Combinatorial fabrication and high-throughput characterization of a Ti-Ni-Cu shape memory thin film composition spread

R. Löbel, S. Thienhaus, A. Savan, A. Ludwig:
Materials Science and Engineering: A (2008)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-41949121567&doi=10.1016%2fj.msea.2007.02.168&partnerID=40&md5=e91753180dc4a43d51135979e30acda8https://dx.doi.org/10.1016/j.msea.2007.02.168
2008
  • article
article2008Nikolay ZotovJürgen FeydtAlfred Ludwig

Dependence of grain sizes and microstrains on annealing temperature in Fe/Pt multilayers and L10 FePt thin films

Nikolay Zotov, Jürgen Feydt, Alfred Ludwig:
Thin Solid Films (2008)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-55049103853&doi=10.1016%2fj.tsf.2008.06.062&partnerID=40&md5=19e64a99eef8b791a9f1018dca274f45https://dx.doi.org/10.1016/j.tsf.2008.06.062