High-speed odor sensing using miniaturized electronic nose

Animals have evolved to rapidly detect and recognize brief and intermittent encounters with odor packages, exhibiting recognition capabilities within milliseconds. Artificial olfaction has faced challenges in achieving comparable results-existing solutions are either slow; or bulky, expensive, and p...

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Bibliographic Details
Published in:Science advances 2024-11, Vol.10 (45), p.eadp1764
Main Authors: Dennler, Nik, Drix, Damien, Warner, Tom P A, Rastogi, Shavika, Casa, Cecilia Della, Ackels, Tobias, Schaefer, Andreas T, van Schaik, André, Schmuker, Michael
Format: Article
Language:English
Subjects:
Algorithms
Animals
Applied Sciences and Engineering
Electronic Nose
Engineering
Mice
Miniaturization
Odorants - analysis
Physical and Materials Sciences
Robotics
SciAdv r-articles
Smell - physiology
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Summary:Animals have evolved to rapidly detect and recognize brief and intermittent encounters with odor packages, exhibiting recognition capabilities within milliseconds. Artificial olfaction has faced challenges in achieving comparable results-existing solutions are either slow; or bulky, expensive, and power-intensive-limiting applicability in real-world scenarios for mobile robotics. Here, we introduce a miniaturized high-speed electronic nose, characterized by high-bandwidth sensor readouts, tightly controlled sensing parameters, and powerful algorithms. The system is evaluated on a high-fidelity odor delivery benchmark. We showcase successful classification of tens-of-millisecond odor pulses and demonstrate temporal pattern encoding of stimuli switching with up to 60 hertz. Those timescales are unprecedented in miniaturized low-power settings and demonstrably exceed the performance observed in mice. It is now possible to match the temporal resolution of animal olfaction in robotic systems. This will allow for addressing challenges in environmental and industrial monitoring, security, neuroscience, and beyond.
ISSN:2375-2548
2375-2548
DOI:10.1126/sciadv.adp1764