Abstract

A phenomenon of formation of multiple “coffee rings” consisting of microcrystals in the 4,4‘-azoxyanisole - benzene system was experimentally and theoretically investigated. It is shown that by changing of the geometry of a drop, for example, by placing a metal ball in its center it is possible to fundamentally change the geometry of the “coffee ring”. Assumptions were made about the physical nature of the effect of the formation of a “coffee ring” of a spiral shape. The proposed geometric model of this phenomenon reflects well the physical processes occurring during spiral crystallization, and the model is in good agreement with the experimental data obtained by gravimetry. New approaches to the formation of microstructures of functional materials with a thermotropic liquid crystal phase on a glass substrate can be used to create devices for nano – and microelectronics and optical technology.

Details

Title
Formation of spiral microstructures during crystallization of 4,4‘-azoxyanisole from a benzene solution
Author
Vasilchikova, E N 1 ; Konstantinov, M S 1 ; Mashchenko, V I 1 ; Chausova, O V 2 ; Kuzmin, M K 1 ; Dadivanyan, A K 1 

 Moscow Region State University MRSU, Very Voloshinoy str., 24, Mytishi, 141014, Russia 
 University of Technology, 42 Gagarina st. Moscow Region, Korolev, Russia 
Publication year
2020
Publication date
Jun 2020
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2569904604
Copyright
© 2020. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.