Xiaosong Wu: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China.
Shuhui Shi: Department of Electrical and Electronic Engineering, University of Hong Kong, Pokfulam Road, Hong Kong SAR, P. R. China.
Jingyan Jiang: College of Big Data and Internet, Shenzhen Technology University, Shenzhen, 518118, P. R. China.
Dedong Lin: College of Big Data and Internet, Shenzhen Technology University, Shenzhen, 518118, P. R. China.
Jian Song: School of Microelectronics, Shanghai University, Shanghai, 201800, P. R. China.
Zhongrui Wang: Department of Electrical and Electronic Engineering, University of Hong Kong, Pokfulam Road, Hong Kong SAR, P. R. China.
Weiguo Huang: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China. ORCID
Gas sensing and recognition are closely related to the sustainable development of human society, current electronic noses (e-noses) typically focus on detecting specific gases, with only a few capable of recognizing complex odor mixtures. Further, these sensors often struggle to distinguish between isomers and homologs, as these compounds usually have similar physical and chemical properties, yielding nearly identical sensor responses. Even the mammalian olfactory systems consisting of a large variety of receptor cells and efficient neuron networks sometimes fail in this task. The bottleneck stems from the inability to extract the fingerprints of these compounds and the inefficiency of signal processing. To address these limitations, a material-device-algorithm co-design strategy is proposed that integrates an organic field-effect transistor (OFET) array with in-sensor reservoir computing (RC) and the k-nearest neighbors (KNN) algorithm. Organic semiconductors diversify responses to different gases, while RC efficiently extracts spatiotemporal features with lower training costs and reduced energy overhead. This synergy achieves 100% classification accuracy for eight gases and 99.04% accuracy for a library of 26 gases, including mixtures, isomers, and homologs-among the highest reported accuracies. This work provides a groundbreaking hardware solution for bionic olfactory neurons with edge artificial intelligence (AI) functions, surpassing traditional e-noses.
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Grants
2021J06034/Natural Science Foundation of Fujian Province
2023I0030/Fujian Provincial Department of Science and Technology
2024M763266/China Postdoctoral Science Foundation
/Foundation for the Excellent Postdoctoral of Fujian Province
CXZX-2022-GH09/Self-deployment Project Research Program of Haixi Institutes, Chinese Academy of Science
CXZX-2023-GS03/Self-deployment Project Research Program of Haixi Institutes, Chinese Academy of Science
27206321/HK RGC
17205922/HK RGC
17212923/HK RGC
SQ2022YFB3600159/National Key R&D Program of China
E055AJ01/Chinese Academy of Sciences
E355AJ01/Chinese Academy of Sciences
2021ZR115/Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China
52473201/National Natural Science Foundation of China
52303355/National Natural Science Foundation of China
22275193/National Natural Science Foundation of China
22275189/National Natural Science Foundation of China