Non-Woven Paper-Based Facile Ultra-Fast Response Capacitive Sensor for Respiration Monitoring

Asad Ullah, Muhammad Hamza Zulfiqar, Muhammad Atif Khan, Muhammad Qasim Mehmood, Yehia Mahmoud Massoud

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The demand of flexible sensor for humidity and respiration monitoring is increasing day by day because of its low-cost and portability. Herein, we presented a facile fabricated, ultra-sensitive and fast responsive parallel plate (PP) capacitive-based humidity sensor for respiration monitoring. The material used for sensor fabrication are copper tape as electrode, Polyethylene terephthalate (PET) as the flexible substrate, and. Nonwoven-paper as a sensing layer. The sensor shows a rapid absorption and desorption behavior due to the use of sensing layer as a nonwoven-paper. The sensor response was examined for percentage relative humidity from 40%-100% RH and a response is observed as 68-1110pF. The sensor is highly sensitive and it's shows a fast response/recovery time of 1s/1.5s. The sensor was also analyzed for different respiration forms with slow, fast, normal, and deep breathing; also, a different response is observed for mouth and nasal breathing. Due to its low cost, stability, sensitivity, repeatability, and eco-friendly behaviors the sensor is found to be the most promising candidate for respiration monitoring in medical fields.
Original languageEnglish (US)
Title of host publication2023 IEEE 23rd International Conference on Nanotechnology (NANO)
StatePublished - Jul 2 2023


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