Decoupled Temperature‐Pressure Sensing via Hierarchical Porous Sponge for Thermo‐Tactile Perception
Year: 2026
Type: article
Abstract: ABSTRACT Precise and crosstalk‐free discrimination of pressure and temperature remains a fundamental challenge in artificial sensory systems due to the intrinsic coupling of mechanical and thermal transduction. Herein, we present a flexible, high‐fidelity dual‐modal sensor based on an ultralight hierarchically porous conductive sponge. The engineered porous architecture synergistically integrates piezoresistive and thermoelectric effects within a single carbon nanomaterial, achieving physical decoupling between resistance‐type pressure signals and voltage‐type temperature outputs, effectively suppressing dual‐modal interference. Owing to its compressibility, conductive network, and thermal insulation, the sensor delivers a pressure sensitivity of 4.43 kPa −1 , a detection limit of 25 Pa, a response time of 91 ms, and durability over 20 000 cycles, alongside a Seebeck coefficient of 9.96 µV K −1 and a temperature resolution of 0.5 K. As a proof of concept, it enables real‐time Morse code communication and physiological monitoring. Moreover, a 3 × 3 sensor array integrated with machine learning demonstrates robust tactile‐thermal fusion perception, highlighting its potential as a multifunctional sensing platform. This work presents a material‐driven strategy to overcome multimodal signal interference, significantly promoting sensory perception in complex environments.
Source: Advanced Functional Materials
DOI: 10.1002/adfm.78367
Authors: Jiachen Dong, Bo Xu, Hongyu Mi, Xin Zhao, Yuqing Zhai, Yongqi Zhu, Zhiyu Wang, Xinqin Liao
Institutions: Xinjiang University, Xiamen University
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
Funder: Xinjiang Medical University
OpenAlex ID: W7212380987