Highlights in 2019

Our paper on the study of the exclusion behavior in active soft matter systems is highlighted with a cover page of Langmuir. This work is part of the Special Issue on Advances in Active Materials.

We studied the anisotropy in the interaction of visible light-driven Ag/AgCl-based spherical Janus particles embedded in a dense matrix of passive SiO2 beads in pure water. We observe an anisotropic profile of the repulsive interaction between immobile active Janus particles and passive beads and explain it as a result of an asymmetry in the chemical gradient around the Janus particle, triggered upon visible light illumination. This leads to the distortion in the initially isotropic surrounding electric potential and results in the asymmetric exclusion of passive beads around the Ag/AgCl cap. With this study, we provide new insights into the rotational dynamics of photocatalytically active Janus particles embedded in a dense matrix of passive beads. We anticipate that these phenomena, peculiar for electro-kinetic motors, can be observed only due to the confinement imposed by a dense environment.

This work is the result of a fruitful cooperation between the Helmholtz-Zentrum Dresden-Rossendorf e.V., Dresden University of Technology (group of Dr. Larysa Baraban), Vrije Universiteit Brussel (Dr. Vyacheslav R. Misko), RIKEN Cluster for Pioneering Research (Prof. Franco Nori).

T. Huang, S. Gobeil, X. Wang, V. Misko, F. Nori, W. De Malsche, J. Fassbender, D. Makarov, G. Cuniberti, and L. Baraban
Anisotropic exclusion effect between photocatalytic Ag/AgCl Janus particles and passive beads in a dense colloidal matrix
Langmuir 36, 7091 (2020). URL   

04/2020Denys Makarov is a Fellow of the Young Academy of Europe
Denys Makarov is admitted as a member of the Young Academy of Europe (YAE). The YAE is a pan-European charity organisation of young scholars with outspoken views about academia as well as humanities and science policy. The YAE prospers from the involvement of excellent scholars to advance on issues that are relevant to the European landscape. Further details on the YAE can be found here: URL

02/2020Denys Makarov receives the Research Award of the HZDR
Denys Makarov received the 2019 HZDR Research Award for his outstanding work in the field of “Magnetic Sensor Technology for Microfluidics and Augmented Reality“.

Further details can be found here: URL