Nanoscale and porous materials with electrochemically controlled properties

This project aims at the tuning of the physical properties (optical, electronic, magnetic) of nanocrystalline metals by electrical field-induced modifications of the charge carrier density in the interface region. The idea is to combine the approaches of inducing a space-charge region by a tuneable applied voltage and of using nanoscale microstructures with a large interface-to-volume ratio to maximise the fraction of the space-charge layers.

Persons involved: Roland Würschum, Eva Steyskal, Markus Gößler, Elisabeth Hengge

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Publications:

2021
Philipp Emanuel Brunner, Eva-Maria Steyskal and Roland Würschum Electrochemical switching of positronium triplet quenching Physical Chemistry, Chemical Physics 2021, 2021 , DOI Show publication in PURE
Elisabeth Hengge, Markus Hirber, Philipp Emanuel Brunner, Eva-Maria Steyskal, Bernd Nidetzky and Roland Würschum Nanoporous gold electrodes modified with self-assembled monolayers for electrochemical control of the surface charge Physical Chemistry, Chemical Physics 23, 14457-14464, 2021 , DOI Show publication in PURE
2019
Elisabeth Hengge, Eva-Maria Steyskal, Rupert Bachler, Alexander Dennig, Bernd Nidetzky and Roland Würschum Adsorption and desorption of self-assembled L-cysteine monolayers on nanoporous gold monitored by in situ resistometry Beilstein Journal of Nanotechnology 10, 2275-2279, 2019 , DOI Show publication in PURE
2018
Eva-Maria Steyskal, Michael Seidl, Sanja Simic and Roland Würschum Enhanced Charging-Induced Resistance Variations of Nanoporous Gold by Dealloying in Neutral Silver Nitrate Solution Langmuir 34, 13110-13115, 2018 , DOI Show publication in PURE
2017
Eva-Maria Steyskal, Michael Seidl, Matthias Graf and Roland Würschum Dealloying progress during nanoporous structure evolution analyzed by in situ resistometry Physical Chemistry, Chemical Physics 19, 29880-29885, 2017 , DOI Show publication in PURE
2016
Stefan Topolovec, Heinz Krenn and Roland Würschum Enhanced magnetic moment of ultrathin Co films measured by in situ electrodeposition in a SQUID Journal of Magnetism and Magnetic Materials 397, 96-100, 2016 , DOI Show publication in PURE
Eva-Maria Steyskal, Zhen Qi, Peter Pölt, Mihaela Albu, Jörg Weissmüller and Roland Würschum Electrochemically Tunable Resistance of Nanoporous Platinum Produced by Dealloying Langmuir 32, 7757−7764, 2016 , DOI Show publication in PURE
Eva-Maria Steyskal, Christopher Alois Wiednig, Norbert Enzinger and Roland Würschum In situ characterization of hydrogen absorption in nanoporous palladium produced by dealloying Beilstein Journal of Nanotechnology 7, 1197-1201, 2016 , DOI Show publication in PURE
2015
Stefan Topolovec, Heinz Krenn and Roland Würschum Electrochemical cell for in situ electrodeposition of magnetic thin films in a superconducting quantum interference device magnetometer Review of Scientific Instruments 86, 063903-063903, 2015 , DOI Show publication in PURE
2013
Stefan Topolovec, Peter Jerabek, Dorothée Vinga Szabó, Heinz Krenn and Roland Würschum SQUID magnetometry combined with in situ cyclic voltammetry: A case study of tunable magnetism of γ-Fe₂O₃ nanoparticles Journal of Magnetism and Magnetic Materials 329, 43-48, 2013 , DOI Show publication in PURE
Eva-Maria Steyskal, Stefan Topolovec, Stephan Landgraf, Heinz Krenn and Roland Würschum In situ monitoring magnetism and resistance of nanophase platinum upon electrochemical oxidation Beilstein Journal of Nanotechnology 4, 394-399, 2013 , DOI Show publication in PURE
2012
Eva-Maria Steyskal, Maximilian Besenhard, Stephan Landgraf, Yi Zhong, Jörg Weissmüller, Peter Pölt, Mihaela Albu and Roland Würschum Sign-inversion of charging-induced variation of electrical resistance of nanoporous platinum Journal of Applied Physics , 073703-1-073703-7, 2012 , DOI Show publication in PURE
2011
Thomas Traußnig, Stefan Topolovec, Kashif Nadeem, D.V. Szabo, Heinz Krenn and Roland Würschum Magnetization of Fe-oxide based nanocomposite tuned by surface charging Physica Status Solidi / Rapid Research Letters 5, 150-152, 2011 , DOI Show publication in PURE