TEMPERATURE EFFECT ON THE RESISTIVITY OF A PHOTOCURABLE BIOCOMPATIBLE HYDROGEL BASED ON A COMPOSITE CARBON NANOMATERIAL WITH METALLIC NANOPARTICLES AND EOSIN Y

Abstract

This study examines the temperature dependence of the electrical conductivity of a photocurable hydrogel based on a hydrophilic composite carbon nanomaterial over the temperature range of 25.8 to 40.0 °C. The material is designed for the fabrication of third-generation bioelectronic devices [1] that integrate soft electronic components with multifunctional adaptive human–machine interfaces capable of responding to mechanical and other external stimuli.
The primary components of the composite carbon nanomaterial are bovine serum albumin, chitosan, collagen, eosin Y, single-walled carbon nanotubes, reduced graphene oxide, and magnetite nanoparticles with a diameter of 80 nm. The dispersed medium is photocured using a pulsed nanosecond laser.
A decrease in resistivity from 49.02 to 17.92 Ω×cm was observed as the temperature increased from 25.8 °C to 40.0 °C. This confirms the material’s ability to function at 37 °C.
The proposed material can be used as a biocompatible coating for neuroimplants with complex geometries fabricated via laser photocuring. The material demonstrates compatibility with the Neuro 2A cell line. The hydrogel coating is designed to restore synaptic connectivity between neurons across damaged tissue regions and to block pain signals upon stimulation from a neurostimulator.
Funding: This work was carried out within the framework of the state assignment of the Ministry of Science and Higher Education of the Russian Federation (Project FSMR-2024-0003).
References
[1] Park J., Ha J., Kim D.G., Lee S., Jung H., Koo J.H., Cha G.D., Kim, D.C. Multi‐Functional Adaptive Interfaces for Next‐Generation Wearable and Implantable Bioelectronics. Adv. Sci. 2026, 13, doi:10.1002/advs.202600043.

Speaker

Savelyev Mikhail S.
National Research University of Electronic Technology, MIET
Russian Federation

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