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A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles

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Origami Paper-Based Stretchable Humidity Sensor for Textile-Attachable Wearable Electronics.

Xingru Chen¹, Yongkai Li¹, Xiaoyi Wang^1,2

¹Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR.

ACS Applied Materials & Interfaces

|August 1, 2022

Summary

Researchers developed a novel, eco-friendly paper-based origami humidity sensor (POHS). This flexible and stretchable sensor offers high sensitivity for wearable applications like physiological monitoring.

Keywords:

environmentally friendly flexible humidity sensors low-cost paper-based electronics stretchable

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Last Updated: Sep 2, 2025

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Area of Science:

Materials Science
Wearable Technology
Sensor Technology

Background:

Flexible and stretchable humidity sensors are crucial for healthcare and physiological monitoring.
Existing sensors often lack cost-effectiveness, ease of fabrication, or environmental friendliness.
There is a need for paper-based, sustainable alternatives.

Purpose of the Study:

To introduce the first stretchable, textile-compatible paper-based origami humidity sensor (POHS).
To demonstrate a low-cost, environmentally friendly, and easily fabricated humidity sensing solution.
To validate the sensor's performance in wearable applications.

Main Methods:

Utilized origami folding techniques to enhance the stretchability of a paper substrate.
Employed airlaid paper as both the sensing material and substrate.
Integrated the paper-based sensor for textile compatibility and wearable device development.

Main Results:

Achieved good stretchability and high sensitivity in the paper-based origami humidity sensor (POHS).
Demonstrated excellent response, recovery, and stability during deformation and after 300 folding cycles.
Successfully monitored breathing rate dynamically, showcasing potential for real-time physiological tracking.

Conclusions:

The proposed paper-based origami humidity sensor (POHS) offers a promising, low-cost, and sustainable solution for wearable humidity sensing.
Its flexibility, stretchability, and ease of fabrication make it suitable for integration into textiles.
Potential applications include respiration rate monitoring and diaper wetting detection, advancing wearable healthcare technology.