# Thermo‐Responsive Self‐Recoverable Porous Sensors with Writable Electrodes: Advancing Wearable Motion Detection

## TL;DR

Researchers developed a self-recovering, flexible sensor that can detect body movements and adapt to different shapes, promising for wearable technology.

## Contribution

The novel use of shape memory polymers and writable vapor phase polymerization enables self-recovery and shape-editable sensors for motion detection.

## Key findings

- The sensor combines triboelectric and piezoresistive modes for versatile motion detection.
- Integrated into smart insoles and gloves, it successfully monitors pressure and joint movements.
- The design offers improved sustainability and conformability for wearable devices.

## Abstract

The remarkable applications of flexible and wearable sensors in the fields of human motion detection and health monitoring have attracted extensive attention from academic and industrial pools. However, creating advanced sensors capable of self‐recovery, shape‐editability, and multi‐mode for long‐term motion detection still remains challenging. Herein, a self‐recoverable flexible porous sensor with diverse designability of electrodes is developed for comprehensive motion detection. Shape memory polymer (SMP) is utilized as a core material to manufacture the porous electrodes, which endows the sensor with excellent self‐recoverability, enhanced structural robustness, and high flexibility. The porous electrodes further enable dual triboelectric and piezoresistive sensing modes, which can achieve versatile detection capabilities for various body movements and motion patterns. A writable vapor phase polymerization technique is employed to realize the shape‐editability of the electrodes, ensuring adaptability to diverse body shapes and complex movements. The novel sensors are integrated into smart insoles, joint monitoring bands, and intelligent gloves, demonstrating the capabilities of the sensors in plantar pressure monitoring, joint motion tracking, tactile sensing, and information interaction. This work offers a promising strategy for the development of advanced wearable sensors with improved sustainability, reliability, and conformability.

A self‐recoverable flexible porous sensor with diverse designability of electrodes is developed through writable vapor phase polymerization using shape memory polymers (SMPs) as the fundamental materials. The sensors enable long‐term comprehensive human motion detection. This work contributes to a self‐recoverable flexible sensing technology for next‐generation wearable devices, human‐machine interfaces, and robotics.