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Updated: Sep 3, 2025

A Detailed Protocol for Perspiration Monitoring Using a Novel, Small, Wireless Device

A Detailed Protocol for Perspiration Monitoring Using a Novel, Small, Wireless Device

Published on: November 24, 2016

Multifunctional Flexible Humidity Sensor Systems Towards Noncontact Wearable Electronics.

Yuyao Lu¹, Geng Yang², Yajing Shen³

¹State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China.

Nano-Micro Letters

|July 22, 2022

Summary

Flexible humidity sensors are advancing rapidly for contactless monitoring in healthcare and IoT. This overview details recent progress in materials, mechanisms, and applications, highlighting their importance in preventing cross-infection.

Keywords:

COVID-19 epidemic Flexible electronics Flexible humidity sensors Healthcare monitoring Human–machine interactions Noncontact detection

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Area of Science:

Materials Science
Electronics Engineering
Sensor Technology

Background:

Intelligent skin-like electronics are gaining traction across healthcare, IoT, AI, and robotics.
Flexible humidity sensors are crucial for noncontact measurements due to their rapid response to humidity fluctuations.

Purpose of the Study:

To provide an overview of recent advancements in flexible humidity sensors for contactless monitoring.
To highlight various active functional materials and working mechanisms.

Main Methods:

Categorization of sensors based on resistive, capacitive, impedance-type, and voltage-type mechanisms.
Discussion of performance enhancement strategies like chemical doping, structural design, and Joule heating.

Main Results:

Overview of diverse active functional materials for flexible humidity sensors.
Presentation of strategies to improve sensor performance.
Examples of applications in human/plant healthcare and human-machine interactions.

Conclusions:

Flexible humidity sensors are key for noncontact monitoring, with significant potential in healthcare and preventing disease transmission.
Continued innovation in this field offers substantial benefits to society, particularly in scenarios requiring aversion of cross-infection.