PhD in Nanosciences, University of Basel, Switzerland (2017)
I work under the project ‘Charge transport in small nanoparticles’
- In-situ formation of one-dimensional coordination polymers in molecular junctions
Anton Vladyka, Mickael L. Perrin, Jan Overbeck, Rubén R. Ferradás, Víctor García-Suárez, Markus Gantenbein, Jan Brunner, Marcel Mayor, Jaime Ferrer, and Michel Calame.
Nature Communications, 10(1), 262, 2019
We demonstrate the bottom-up in-situ formation of organometallic oligomer chains at the single-molecule level. The chains are formed using the mechanically controllable break junction technique operated in a liquid environment, and consist of alternating isocyano-terminated benzene monomers coordinated to gold atoms. We show that the chaining process is critically determined by the surface density of molecules. In particular, we demonstrate that by reducing the local supply of molecules within the junction, either by lowering the molecular concentration or by adding side groups, the oligomerization process can be suppressed. Our experimental results are supported by ab-initio simulations, confirming that the isocyano terminating groups display a high tendency to form molecular chains, as a result of their high affinity for gold. Our findings open the road for the controlled formation of one-dimensional, single coordination-polymer chains as promising model systems of organometallic frameworks.
- Light-Stimulatable Molecules/Nanoparticles Networks for Switchable Logical Functions and Reservoir Computing
Yannick Viero, David Guérin, Anton Vladyka, Fabien Alibart, Stéphane Lenfant, M. Calame, and Dominique Vuillaume.
Advanced Functional Materials, , 1801506, 2018
Abstract The fabrication and electron transport properties of nanoparticles self-assembled networks (NPSAN) of molecular switches (azobenzene derivatives) interconnected by Au nanoparticles are reported, and optically driven switchable logical operations associated to the light-controlled switching of the molecules are demonstrated. The switching yield is up to 74\%. It is also demonstrated that these NPSANs are prone to light-stimulable reservoir computing. The complex nonlinearity of electron transport and dynamics in these highly connected and recurrent networks of molecular junctions exhibits rich high harmonics generation (HHG) required for reservoir computing approaches. Logical functions and HHG are controlled by the isomerization of the molecules upon light illumination. These results, without direct analogs in semiconductor devices, open new perspectives to molecular electronics in unconventional computing.
- Ordered nanoparticle arrays interconnected by molecular linkers: electronic and optoelectronic properties
Jianhui Liao, Sander Blok, Sense Jan van der Molen, Sandra Diefenbach, Alexander W. Holleitner, Christian Schönenberger, Anton Vladyka, and Michel Calame.
Chemical Society Reviews, 44(4), 999–1014, 2015
- Interplay between Mechanical and Electronic Degrees of Freedom in $\pi$-Stacked Molecular Junctions: From Single Molecules to Mesoscopic Nanoparticle Networks
Tahereh Ghane, Daijiro Nozaki, Arezoo Dianat, Anton Vladyka, Rafael Gutierrez, Jugun Prakash Chinta, Shlomo Yitzchaik, Michel Calame, and Gianaurelio Cuniberti.
The Journal of Physical Chemistry C, 119(11), 6344–6355, 2015
- Transport properties characterization of individual molecule device using noise spectroscopy: A new approach.
Anton Vladyka, Viktor Sydoruk, Svetlana Vitusevich, Mykhailo Petrychuk, Dong Xiang, Andreas Offenhäusser, Vyacheslav Kochelap, Alexander Belyaev, and Dirk Mayer. In THE PHYSICS OF SEMICONDUCTORS: Proceedings of the 31st International Conference on the Physics of Semiconductors (ICPS) 2012, 2013.
- Noise and transport characterization of single molecular break junctions with individual molecule
V. A. Sydoruk, D. Xiang, S. A. Vitusevich, M. V. Petrychuk, Anton Vladyka, Y. Zhang, A. Offenhäusser, V. A. Kochelap, A. E. Belyaev, and D. Mayer.
Journal of Applied Physics, 112(1), 14908, 2012