Low-power biomimetic ionic thermoelectric device for multi-gas olfaction
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ID: 315166
2026
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Abstract
Abstract The escalating demand for intelligent multi-gas sensing has driven the need for high-performance artificial olfactory systems with enhanced power efficiency. This work proposes an innovative gas sensing mechanism enabled by the giant ionic-thermoelectric effects in solid-state ionic polymer, which overcomes the low thermopower-to-thermal conductivity (S/κ) limitation of the conventional electronic thermoelectric materials. Using wafer-scale microfabrication technology, we demonstrate the first functional ionic-thermoelectric biomimetic olfactory device that can simultaneously resolve mixed gas analytes. This monolithic platform integrates multiple sub-100 μm sensing units, each combining an ionic-thermoelectric module with a narrow-bandpass optical filter, to selectively resolve the contributions of individual gas species in mixed-gas environments. The device achieves a record responsivity of 2340 V/W, a 20-fold improvement over commercial detectors (typically <200 V/W) and achieves limits of detection of 1.42 ppm, 0.15 ppm, and 1.16 ppb for CO2, CH4 and CO, respectively. This work establishes a promising route to next-generation artificial olfactory systems based on the ionic-thermoelectric effects.
| Reference Key |
openalex_W7162636041
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|---|---|
| Authors | Gongze Liu, Cheng Chi, Jiacheng Ji, Keqiao Li, Meng Li, Yucheng Ding, Weiqi Zhang, Wenying Tang, Zhiyong Fan, Baoling Huang |
| Journal | national science review |
| Year | 2026 |
| DOI |
10.1093/nsr/nwag320
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| URL | |
| Keywords | Keywords not found |
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