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

  • 2024
2024
  • article
article2024Valerie StrotkötterYujiao LiAleksander KostkaFlorian LourensTobias LöfflerWolfgang SchuhmannAlfred Ludwig

Self-formation of compositionally complex surface oxides on high entropy alloys observed by accelerated atom probe tomography: a route to sustainable catalysts

Valerie Strotkötter, Yujiao Li, Aleksander Kostka, Florian Lourens, Tobias Löffler, Wolfgang Schuhmann, Alfred Ludwig:
Materials Horizons (2024)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85199404271&doi=10.1039%2fd4mh00245h&partnerID=40&md5=615983872ffc215568cf704ddd72daa3https://dx.doi.org/10.1039/d4mh00245h
2024
  • article
article2024Tobias H. PiotrowiakOlga A. KrysiakEllen SuhrJian ZhangRico ZehlAleksander KostkaWolfgang SchuhmannAlfred Ludwig

Sputter-Deposited La–Co–Mn–O Nanocolumns as Stable Electrocatalyst for the Oxygen Evolution Reaction

Tobias H. Piotrowiak, Olga A. Krysiak, Ellen Suhr, Jian Zhang, Rico Zehl, Aleksander Kostka, Wolfgang Schuhmann, Alfred Ludwig:
Small Structures (2024)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85183403036&doi=10.1002%2fsstr.202300415&partnerID=40&md5=9eddeda6f994e3e2ef53f6bd4193cf27https://dx.doi.org/10.1002/sstr.202300415
2024
  • article
article2024Aurelija MockuteAleksander KostkaLamya AbdellaouiOlga KrysiakWolfgang SchuhmannChristina ScheuAlfred Ludwig

Structural and Hydrogen Evolution Electrocatalysis Properties of Cr–Al–B MAB Phase Thin Films

Aurelija Mockute, Aleksander Kostka, Lamya Abdellaoui, Olga Krysiak, Wolfgang Schuhmann, Christina Scheu, Alfred Ludwig:
Advanced Engineering Materials (2024)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85200152447&doi=10.1002%2fadem.202401063&partnerID=40&md5=21bb4284b42e88ddbde41383b5c03688https://dx.doi.org/10.1002/adem.202401063
2024
  • article
article2024Florian LourensDetlef RogallaEllen SuhrAlfred Ludwig

The Influence of Annealing on the Compositional and Crystallographic Properties of Sputtered Li–Al–O Thin Films

Florian Lourens, Detlef Rogalla, Ellen Suhr, Alfred Ludwig:
Advanced Engineering Materials (2024)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85199101945&doi=10.1002%2fadem.202400602&partnerID=40&md5=f39daba3f59e0361be9020f758b93cb9https://dx.doi.org/10.1002/adem.202400602
2024
  • article
article2024N. KarpsteinM. LenzA. BezoldR. ZehlM. WuA. LudwigG. LaplancheS. NeumeierE. Spiecker

Unambiguous Stacking Fault Analysis for Unraveling Shearing Mechanisms and Shear-Based Transformations in the L12-Ordered γ′ Phase

N. Karpstein, M. Lenz, A. Bezold, R. Zehl, M. Wu, A. Ludwig, G. Laplanche, S. Neumeier, E. Spiecker:
Minerals, Metals and Materials Series (2024)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85202707890&doi=10.1007%2f978-3-031-63937-1_4&partnerID=40&md5=6f89006a9a160dbd413fa592825daf01https://dx.doi.org/10.1007/978-3-031-63937-1_4
  • 2023
2023
  • article
article2023Christian M. ClausenOlga A. KrysiakLars BankoJack K. PedersenWolfgang SchuhmannAlfred LudwigJan Rossmeisl

A Flexible Theory for Catalysis: Learning Alkaline Oxygen Reduction on Complex Solid Solutions within the Ag−Pd−Pt−Ru Composition Space**

Christian M. Clausen, Olga A. Krysiak, Lars Banko, Jack K. Pedersen, Wolfgang Schuhmann, Alfred Ludwig, Jan Rossmeisl:
Angewandte Chemie - International Edition (2023)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85168329221&doi=10.1002%2fanie.202307187&partnerID=40&md5=32176359e372dcb50caec24091300f3ehttps://dx.doi.org/10.1002/anie.202307187
2023
  • article
article2023Moonjoo KimEmmanuel Batsa TettehOlga A. KrysiakAlan SavanBin XiaoTobias Horst PiotrowiakCorina AndronescuAlfred LudwigTaek Dong ChungWolfgang Schuhmann

Acidic Hydrogen Evolution Electrocatalysis at High-Entropy Alloys Correlates with its Composition-Dependent Potential of Zero Charge

Moonjoo Kim, Emmanuel Batsa Tetteh, Olga A. Krysiak, Alan Savan, Bin Xiao, Tobias Horst Piotrowiak, Corina Andronescu, Alfred Ludwig, Taek Dong Chung, Wolfgang Schuhmann:
Angewandte Chemie - International Edition (2023)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85168270203&doi=10.1002%2fanie.202310069&partnerID=40&md5=80065486f5d1df96da0988625e0f3b8dhttps://dx.doi.org/10.1002/anie.202310069
2023
  • article
article2023Tobias H. PiotrowiakRico ZehlEllen SuhrBenedikt KohnenLars BankoAlfred Ludwig

Combinatorial Sputter Synthesis of Single-Phase La(XYZ)O3 ± σ Perovskite Thin-Film Libraries: A New Platform for Materials Discovery

Tobias H. Piotrowiak, Rico Zehl, Ellen Suhr, Benedikt Kohnen, Lars Banko, Alfred Ludwig:
Advanced Engineering Materials (2023)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85163008923&doi=10.1002%2fadem.202300437&partnerID=40&md5=a260e9a62d37662db73da5f985104019https://dx.doi.org/10.1002/adem.202300437
2023
  • article
article2023Mohammad R. NouriRegina M. KlugeRichard W. HaidJill FortmannAlfred LudwigAliaksandr S. BandarenkaVitaly Alexandrov

Electron Tunneling at Electrocatalytic Interfaces

Mohammad R. Nouri, Regina M. Kluge, Richard W. Haid, Jill Fortmann, Alfred Ludwig, Aliaksandr S. Bandarenka, Vitaly Alexandrov:
Journal of Physical Chemistry C (2023)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85151350362&doi=10.1021%2facs.jpcc.3c00207&partnerID=40&md5=c5e19e1b0ad75cc754743c1173239ec8https://dx.doi.org/10.1021/acs.jpcc.3c00207
2023
  • article
article2023Cafer Tufan CakirTobias PiotrowiakUwe ReinholzAlfred LudwigFranziska EmmerlingChristina StreliAna Guilherme BuzanichMartin Radtke

Exploring the Depths of Corrosion: A Novel GE-XANES Technique for Investigating Compositionally Complex Alloys

Cafer Tufan Cakir, Tobias Piotrowiak, Uwe Reinholz, Alfred Ludwig, Franziska Emmerling, Christina Streli, Ana Guilherme Buzanich, Martin Radtke:
Analytical Chemistry (2023)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85149360037&doi=10.1021%2facs.analchem.3c00404&partnerID=40&md5=884a3f3a3b59be4d5d05e990424220e2https://dx.doi.org/10.1021/acs.analchem.3c00404
2023
  • article
article2023Ellen SuhrOlga A. KrysiakValerie StrotkötterFelix ThelenWolfgang SchuhmannAlfred Ludwig

High-Throughput Exploration of Structural and Electrochemical Properties of the High-Entropy Nitride System (Ti–Co–Mo–Ta–W)N

Ellen Suhr, Olga A. Krysiak, Valerie Strotkötter, Felix Thelen, Wolfgang Schuhmann, Alfred Ludwig:
Advanced Engineering Materials (2023)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85174263368&doi=10.1002%2fadem.202300550&partnerID=40&md5=ab5b4a9340d9f4935953b29c322ecc75https://dx.doi.org/10.1002/adem.202300550
2023
  • article
article2023Mária MinichováChuyen Van PhamBin XiaoAlan SavanAndreas HutzlerAndreas KörnerIvan KhalakhanMiquel Gamón RodríguezIosif Mangoufis-GiasinValentín Briega-MartosAttila KormányosIoannis KatsounarosKarl J.J. MayrhoferAlfred LudwigSimon ThieleSerhiy Cherevko

Isopropanol electro-oxidation on Pt-Ru-Ir: A journey from model thin-film libraries towards real electrocatalysts

Mária Minichová, Chuyen Van Pham, Bin Xiao, Alan Savan, Andreas Hutzler, Andreas Körner, Ivan Khalakhan, Miquel Gamón Rodríguez, Iosif Mangoufis-Giasin, Valentín Briega-Martos, Attila Kormányos, Ioannis Katsounaros, Karl J.J. Mayrhofer, Alfred Ludwig, Simon Thiele, Serhiy Cherevko:
Electrochimica Acta (2023)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85147965815&doi=10.1016%2fj.electacta.2023.142032&partnerID=40&md5=d21c67dfb8d6e05abb26e18062149621https://dx.doi.org/10.1016/j.electacta.2023.142032
2023
  • article
article2023Alevtina SmekhovaAlexei KuzminKonrad SiemensmeyerChen LuoJames TaylorSangeeta ThakurFlorin RaduEugen WeschkeAna Guilherme BuzanichBin XiaoAlan SavanKirill V. YusenkoAlfred Ludwig

Local structure and magnetic properties of a nanocrystalline Mn-rich Cantor alloy thin film down to the atomic scale

Alevtina Smekhova, Alexei Kuzmin, Konrad Siemensmeyer, Chen Luo, James Taylor, Sangeeta Thakur, Florin Radu, Eugen Weschke, Ana Guilherme Buzanich, Bin Xiao, Alan Savan, Kirill V. Yusenko, Alfred Ludwig:
Nano Research (2023)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85148083880&doi=10.1007%2fs12274-022-5135-3&partnerID=40&md5=13e90c1a122e28d2183f9745440ec3eahttps://dx.doi.org/10.1007/s12274-022-5135-3
2023
  • article
article2023Lars BankoEmmanuel Batsa TettehAleksander KostkaTobias Horst PiotrowiakOlga Anna KrysiakUlrich HagemannCorina AndronescuWolfgang SchuhmannAlfred Ludwig

Microscale Combinatorial Libraries for the Discovery of High-Entropy Materials

Lars Banko, Emmanuel Batsa Tetteh, Aleksander Kostka, Tobias Horst Piotrowiak, Olga Anna Krysiak, Ulrich Hagemann, Corina Andronescu, Wolfgang Schuhmann, Alfred Ludwig:
Advanced Materials (2023)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85145698554&doi=10.1002%2fadma.202207635&partnerID=40&md5=d41e99b4038a559614f117006f2d158dhttps://dx.doi.org/10.1002/adma.202207635
2023
  • article
article2023Y. KalchevR. ZehlT. PiotrowiakA. KostkaD. NaujoksJ. Pfetzing-MicklichA. Ludwig

Microstructure and Mechanical Properties of a Ni-Based Superalloy Thin Film Investigated by Micropillar Compression

Y. Kalchev, R. Zehl, T. Piotrowiak, A. Kostka, D. Naujoks, J. Pfetzing-Micklich, A. Ludwig:
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science (2023)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85150649881&doi=10.1007%2fs11661-023-07017-9&partnerID=40&md5=23ffce090494cfee8d2add90f7cdeb17https://dx.doi.org/10.1007/s11661-023-07017-9
2023
  • article
article2023Stefan M. PiontekDennis NaujoksTadneem TabassumMark J. DelloStrittoMaximilian JaugstetterPouya HosseiniManuel CorvaAlfred LudwigKristina TschulikMichael L. KleinPoul B. Petersen

Probing the Gold/Water Interface with Surface-Specific Spectroscopy

Stefan M. Piontek, Dennis Naujoks, Tadneem Tabassum, Mark J. DelloStritto, Maximilian Jaugstetter, Pouya Hosseini, Manuel Corva, Alfred Ludwig, Kristina Tschulik, Michael L. Klein, Poul B. Petersen:
ACS Physical Chemistry Au (2023)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85147166941&doi=10.1021%2facsphyschemau.2c00044&partnerID=40&md5=c13fe86becd311ee506e1c370c34d1efhttps://dx.doi.org/10.1021/acsphyschemau.2c00044
2023
  • article
article2023Emmanuel Batsa TettehMoonjoo KimAlan SavanAlfred LudwigTaek Dong ChungWolfgang Schuhmann

Reassessing the intrinsic hydrogen evolution reaction activity of platinum using scanning electrochemical cell microscopy

Emmanuel Batsa Tetteh, Moonjoo Kim, Alan Savan, Alfred Ludwig, Taek Dong Chung, Wolfgang Schuhmann:
Cell Reports Physical Science (2023)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85180598527&doi=10.1016%2fj.xcrp.2023.101680&partnerID=40&md5=53aacbe0ba830dbf00019068dd918ebchttps://dx.doi.org/10.1016/j.xcrp.2023.101680
2023
  • article
article2023Moonjoo KimEmmanuel Batsa TettehAlan SavanBin XiaoAlfred LudwigWolfgang SchuhmannTaek Dong Chung

Reorganization energy in a polybromide ionic liquid measured by scanning electrochemical cell microscopy

Moonjoo Kim, Emmanuel Batsa Tetteh, Alan Savan, Bin Xiao, Alfred Ludwig, Wolfgang Schuhmann, Taek Dong Chung:
Journal of Chemical Physics (2023)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85151932239&doi=10.1063%2f5.0143018&partnerID=40&md5=c189dc2f33d6616a72ff9be9bc20e954https://dx.doi.org/10.1063/5.0143018
2023
  • article
article2023Felix ThelenLars BankoRico ZehlSabrina BahaAlfred Ludwig

Speeding up high-throughput characterization of materials libraries by active learning: autonomous electrical resistance measurements

Felix Thelen, Lars Banko, Rico Zehl, Sabrina Baha, Alfred Ludwig:
Digital Discovery (2023)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85173678911&doi=10.1039%2fd3dd00125c&partnerID=40&md5=496562f6969bc7e6b014284748a66929https://dx.doi.org/10.1039/d3dd00125c
2023
  • article
article2023Attila KormányosQi DongBin XiaoTangyuan LiAlan SavanKen JeneweinTatiana PriamushkoAndreas KörnerThomas BöhmAndreas HutzlerLiangbing HuAlfred LudwigSerhiy Cherevko

Stability of high-entropy alloys under electrocatalytic conditions

Attila Kormányos, Qi Dong, Bin Xiao, Tangyuan Li, Alan Savan, Ken Jenewein, Tatiana Priamushko, Andreas Körner, Thomas Böhm, Andreas Hutzler, Liangbing Hu, Alfred Ludwig, Serhiy Cherevko:
iScience (2023)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85171338513&doi=10.1016%2fj.isci.2023.107775&partnerID=40&md5=d14dce920e8f78e67743a1d38ea85537https://dx.doi.org/10.1016/j.isci.2023.107775
2023
  • article
article2023Matej ZlatarDaniel Escalera-LópezMiquel Gamón RodríguezTomáš HrbekCarina GötzRani Mary JoyAlan SavanHoang Phi TranHong Nhan NongPaulius PobedinskasValentín Briega-MartosAndreas HutzlerThomas BöhmKen HaenenAlfred LudwigIvan KhalakhanPeter StrasserSerhiy Cherevko

Standardizing OER Electrocatalyst Benchmarking in Aqueous Electrolytes: Comprehensive Guidelines for Accelerated Stress Tests and Backing Electrodes

Matej Zlatar, Daniel Escalera-López, Miquel Gamón Rodríguez, Tomáš Hrbek, Carina Götz, Rani Mary Joy, Alan Savan, Hoang Phi Tran, Hong Nhan Nong, Paulius Pobedinskas, Valentín Briega-Martos, Andreas Hutzler, Thomas Böhm, Ken Haenen, Alfred Ludwig, Ivan Khalakhan, Peter Strasser, Serhiy Cherevko:
ACS Catalysis (2023)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85178138304&doi=10.1021%2facscatal.3c03880&partnerID=40&md5=3a746e6dd915ef911995512511b3bbbchttps://dx.doi.org/10.1021/acscatal.3c03880
2023
  • article
article2023Tobias Horst PiotrowiakRico ZehlEllen SuhrLars BankoBenedikt KohnenDetlef RogallaAlfred Ludwig

Unusual Phase Formation in Reactively Sputter-Deposited La—Co—O Thin-Film Libraries

Tobias Horst Piotrowiak, Rico Zehl, Ellen Suhr, Lars Banko, Benedikt Kohnen, Detlef Rogalla, Alfred Ludwig:
Advanced Engineering Materials (2023)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85139047522&doi=10.1002%2fadem.202201050&partnerID=40&md5=a89e07d342caaaa0b1fd7a6bd58ace30https://dx.doi.org/10.1002/adem.202201050
  • 2022
2022
  • article
article2022Florian LourensAlfred Ludwig

Combinatorial sputter deposition of CrMnFeCoNi high entropy alloy thin films on agitated particles

Florian Lourens, Alfred Ludwig:
Surface and Coatings Technology (2022)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85140244492&doi=10.1016%2fj.surfcoat.2022.128984&partnerID=40&md5=4a80d5b8b34065e6e26be8ce6376b2b9https://dx.doi.org/10.1016/j.surfcoat.2022.128984
2022
  • article
article2022Valerie StrotkötterOlga A. KrysiakJian ZhangXiao WangEllen SuhrWolfgang SchuhmannAlfred Ludwig

Discovery of High-Entropy Oxide Electrocatalysts: From Thin-Film Material Libraries to Particles

Valerie Strotkötter, Olga A. Krysiak, Jian Zhang, Xiao Wang, Ellen Suhr, Wolfgang Schuhmann, Alfred Ludwig:
Chemistry of Materials (2022)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85142416804&doi=10.1021%2facs.chemmater.2c01455&partnerID=40&md5=907564e8557e399a5c3a4ba0569563bfhttps://dx.doi.org/10.1021/acs.chemmater.2c01455
2022
  • article
article2022Michael MeischeinAlba Garzón-ManjónThomas HammerschmidtBin XiaoSiyuan ZhangLamya AbdellaouiChristina ScheuAlfred Ludwig

Elemental (im-)miscibility determines phase formation of multinary nanoparticles co-sputtered in ionic liquids

Michael Meischein, Alba Garzón-Manjón, Thomas Hammerschmidt, Bin Xiao, Siyuan Zhang, Lamya Abdellaoui, Christina Scheu, Alfred Ludwig:
Nanoscale Advances (2022)

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85136483525&doi=10.1039%2fd2na00363e&partnerID=40&md5=b8be40031ad4ce5eb69e5f350bb6c283https://dx.doi.org/10.1039/d2na00363e