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Bioinspired Microtexturing for Enhanced Sweat Adhesion in Ion-Selective Membranes.

Marc Josep Montagut Marques¹, Takayuki Masuji², Mohamed Adel³

¹Department of Integrative Bioscience and Biomedical Engineering, Waseda University, Tokyo, Japan.

Cyborg and Bionic Systems (Washington, D.C.)

|August 6, 2025

Summary

New wearable sensors inspired by rose petals improve hydration monitoring during exercise. This bioinspired surface texturing enhances sensor performance and comfort for real-world health tracking.

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Area of Science:

Biomedical Engineering
Materials Science
Wearable Technology

Background:

Health wearable technology can prevent hydration issues during physical activity.
Carbon nanotube (CNT) paper is a promising substrate for on-skin electrolyte monitoring sensors.
Current wearable sensors struggle with performance during human motion.

Purpose of the Study:

To develop advanced wearable sensors for noninvasive health monitoring.
To enhance the performance and reliability of on-skin electrolyte monitoring.
To overcome limitations of current wearable devices in real-world conditions.

Main Methods:

Utilized a bioinspired surface texturing technique mimicking rose petal microstructures.
Developed ion-selective membranes (ISMs) with enhanced wettability and self-cleaning properties.
Engineered sensors to maintain accurate measurements across a 2-mm air gap.

Main Results:

The bioinspired surface texturing improved ISM sensitivity and performance.
The new ISM design achieved accurate measurements despite an air gap, enhancing sweat recirculation.
The developed sensor demonstrated improved interfacing and user comfort.

Conclusions:

Bioinspired surface texturing offers a novel approach to enhance wearable sensor performance.
The rose petal-inspired ISM represents a significant advancement in noninvasive health monitoring.
This technology promises more reliable and effective hydration tracking for athletes and individuals during physical activity.