Strain sensors based on laser-modified carbon nanostructures for apnea detection
Morozova A. S.1, Gerasimenko A. Yu. 1,2
1 Institute of Biomedical Systems, National Research University “Moscow Institute of Electronic Technology”, Moscow, Zelenograd, Russia
2 Institute of Bionic Technologies and Engineering, I.M. Sechenov First Moscow State Medical University, Moscow, Russia

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The development of carbon nanomaterials such as carbon nanotubes and graphene has made it possible to create flexible strain-sensitive devices for wearable electronics. These devices provide greater efficiency in detecting deformations due to a tight fit to the human body, high elasticity and wearing comfort. In this work flexible strain sensors based on thin films of carbon nanotubes obtained by spray deposition have been developed. The effect of laser radiation on the morphology and electrical characteristics of load cells has been studied. A method for increasing sensitivity using laser lithography to form an electrically conductive topology has been developed. The possibility of monitoring breathing using the developed strain-sensitive sensors has been investigated. Keywords: strain sensitivity, multi-walled carbon nanotubes, thin films, laser radiation, lithography, respiratory monitoring
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