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Abstract Insects exhibit exceptional olfactory abilities due to the synergistic interaction between porous sensilla and sensory receptors, optimizing gas transmission and capture. Inspired by this, a scalable structure of WS 2 ‐functionalized nanoengineered wood (WS 2 ‐NEW) for bio‐inspired gas sensors is designed. A multiscale sensing network mimicking insect receptor synergy by in‐situ loading WS 2 nanosheets into vertically aligned microchannels formed by lignin removal, integrated with cross‐sectional 3D interdigital electrodes is developed. The nanoengineered wood enables selective NO 2 adsorption and optimized charge transfer through engineered gas transport pathways and defect‐rich active sites. With the optimized 3D electrode structure, WS₂‐NEW facilitates rapid gas transmission and real‐time signal transduction, achieving highly sensitive NO 2 detection at room temperature with a detection limit as low as 50 ppb. Utilizing wood's processability, WS 2 ‐NEW has demonstrated the potential for large‐scale manufacturing via simple cutting techniques. A wireless sensor watch based on WS 2 ‐NEW for real‐time NO 2 detection highlights its potential in wearable devices. This work proposes an innovative strategy for the manufacturing of gas sensors.
Gu et al. (Wed,) studied this question.