Cellulose optical fiber for human health monitoring

Description

Cellulose, as a fully renewable, biodegradable, and biocompatible material, creates new possibilities to human health monitoring with optical fiber sensors. Here we demonstrate a face mask that contains regenerated cellulose optical fiber with a 2.2 dB/cm attenuation constant for respiratory rate monitoring. The cellulose fiber inside the face mask rapidly moistens and dries between each breath, which causes a periodic change in optical power transmitted through the fiber. A face mask does not prevent fast drying of the fiber. Cellulose optical fiber length was 3-5 cm with a loop-type sensor structure. Measured respiratory rates varied between 20-40 breaths per minute.

Period	29 Jan 2024
Event title	Optical Fibers and Sensors for Medical Diagnostics, Treatment, and Environmental Applications XXIV, Photonic West 2024
Event type	Conference
Conference number	BO305
Location	San Francisco, United States, CaliforniaShow on map
Degree of Recognition	International