Featured Liquid Crystal Picture Art of the Month

October 2020

©Mateusz Mrukiewicz

Nematic twist-bend

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The picture presents the texture of the nematic twist-bend phase. The material was cyanobiphenyl-based liquid crystal dimer containing sulfur links between the spacer and mesogenic units – CBS7SCB. The picture was taken at 84ºC by Biolar PI microscope under crossed polarizers. The scale bar is included in the picture.


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Dr. Mateusz Mrukiewicz is currently an assistant professor at the Military University of Technology in Warsaw. He obtained his Ph.D. degree at the Faculty of New Technologies and Chemistry of the Military University of Technology under the advisory of prof. PaweĊ‚ Perkowski. After obtaining his doctorate, he worked as a visiting scientist at the Advanced Materials and Liquid Crystal Institute at Kent State University in the USA under the supervision of Prof. Oleg D. Lavrentovich. His research interests include materials science of liquid crystals. He specialized in dielectric spectroscopy and electro-optics investigations of liquid crystal materials.

Dr Mateusz Mrukiewicz's research articles are available at the following link:

Contact email: mateusz.mrukiewicz@wat.edu.pl

Jury comment

It is a striking example of the polymorphism. It looks very much like a transition from a nematic like texture to a rope texture.
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