STUDY OF PHYSICAL PROPERTIES OF LAYERED NANOSTRUCTURES FOR CREATION OF BIOELECTRONIC COMPONENTS
D.T. Murashko1, U.E. Kurilova1,2, A.Yu. Gerasimenko1,2
1National Research University of Electronic Technology MIET, Shokin Square 1, 124498 Zelenograd, Moscow, Russia;
2I.M. Sechenov First Moscow State Medical University, Bolshaya Pirogovskaya street 2-4, 119991 Moscow, Russia;
Abstract
This study presents the results of the investigation of physical properties of layered nanostructures designed for the formation of bioelectronic components. A technology for the formation of layered nanostructures from a combination of carbon nanotubes, reduced graphene oxide and albumin biopolymer to produce percolation networks in a biocompatible matrix is proposed. To obtain a specified topology, pre-prepared layers were uniformly deposited on prepared substrates and then treated with electromagnetic radiation. Experimental research has revealed the possibility of using layered nanostructures as flexible wearable sensors with high sensitivity to modify signals from the skin surface, providing measurement accuracy up to 0.1 μV. Impedance and phase angle were recorded in the frequency range from 20 Hz to 1 MHz, and the limit of shift measurement reaches 10 nm. The electrical conductivity of the layers amounted to 20-35 mSm. It was also found that the effect of laser radiation on layered nanostructures allows to form a given morphology of biointerfaces, providing the transmission of electrical impulses into cells in the range of 80-200 mV, pulse duration of 2.5 ms with a pause between pulses of 0.8 Hz. As a result, it is possible to achieve an increase in the number of cells of different tissues more than 1.5 times in 72 hours, compared to the traditional method of cultivation.
The work was supported by the Ministry of Education and Science of the Russian Federation (project FSMR-2024-0003).
Speaker
D.T. Murashko
National Research University of Electronic Technology MIET
Russia
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