Orthogonal Pressure-Humidity Bimodal Sensing via Hierarchical Micro-Nano Engineering of Flexible Electronic Skins

Impact Factor:6.2

DOI number:10.1002/admt.71107

Affiliation of Author(s):西南交通大学

Teaching and Research Group:智能制造工程

Journal:Advanced Materials Technologies

Abstract:Integrating multimodal sensing within a single, compact footprint is pivotal for next-generation intelligent systems, particularly embodied intelligent robots, precision medicine, and smart manufacturing, where spatially co-located perception of multiple physical cues is essential. Conventional flexible sensors, however, suffer from severe cross-talk when simultaneously detecting distinct stimuli at the same location, leading to signal ambiguity and degraded fidelity. Herein, we report a flexible pressure– humidity bimodal sensor achieved through a synergistic structure–material co-design strategy that couples a micro-nano hierarchical structure with multifunctional electrospun nanofibrous layers. The device delivers high-fidelity, real-time responses to pressure (sensitivity: 0.0955 kPa−1 over 0–10 kPa) and humidity (0.1245 kΩ/%RH), exhibits robust cycling stability (>3000 cycles), and achieves small crosstalk (<4.27%). Preliminary experimental and simulation results demonstrate the sensor’s future potential in two proof-of-concept demonstrations: non-destructive assessment of blueberry maturity based on flesh firmness and skin moisture, and co-located monitoring of interface pressure and skin wetness for proactive assessment of pressure ulcer risk in bedridden patients. This work establishes a “micro-nano architecture/multifunctional material” co-design paradigm, providing a scalable pathway enabling electronic skin to perceive diverse and complex environments with high integration and low interference.

Co-author:Yuxuan Fu,Wenke Liu,Kangshuanghong Kang,Zhi-jun Zhao,Bingjun Yu,Linmao Qian

First Author:Wenjing Han

Indexed by:SCI

Correspondence Author:Hongbo Wang

Document Code:e71107

Discipline:Engineering

Document Type:J

Volume:11

Issue:17

Translation or Not:no

Date of Publication:2026-09-03

Included Journals:SCI

Links to published journals:https://advanced.onlinelibrary.wiley.com/doi/abs/10.1002/admt.71107