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Volume 14
Issue 9
10.3390/electronics14091852
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Review

Recent Advances and Applications of Odor Biosensors

by
Hongchao Deng
1,
Zhangyu Chen
2,
Pengfei Feng
3,
Lifeng Tian
1,
Huijuan Zong
1,* and
Takamichi Nakamoto
4
1
Zhejiang Huanmao Auto-Control Technology Co., Ltd., Lianchuang Avenue No.199, Wuchang, Yuhang, Hangzhou 311121, China
2
Zhejiang Ecological Environment Group, Lianchuang Avenue No.199, Wuchang, Yuhang, Hangzhou 311121, China
3
Hangzhou Liqi Instrument Equipment Co., Ltd., Changsong Street No.6, Cangqian, Yuhang, Hangzhou 311121, China
4
Institute of Integrated Research (llR), Institute of Science Tokyo, Suzukakedai Campus, Yokohama 226-0026, Japan
*
Author to whom correspondence should be addressed.
Electronics 2025, 14(9), 1852; https://doi.org/10.3390/electronics14091852
Submission received: 13 March 2025 / Revised: 27 April 2025 / Accepted: 29 April 2025 / Published: 1 May 2025
(This article belongs to the Special Issue Advanced Techniques in Biorobotics)
Versions Notes

Abstract

Many odorants fall outside the sensing scope of the human olfactory system, yet they play quite important roles in our daily lives. Thus, numerous devices have been invented for qualitative or quantitative odor detection issues. Some analytical instruments, e.g., gas chromatography–mass spectrometry, are precise and reliable, but also expensive and bulky. Odor sensors with a smaller size and a lower cost play an important role in on-site rapid odor detection. The sensitivity and selectivity of these sensors are mainly determined by their sensing materials. Inspired by the powerful animal olfactory system, researchers extract diverse biological materials and combine them with transducers to form odor biosensors. In this paper, we introduce odor biosensors based on transducer types such as microelectrodes, fluorescence, surface plasmon resonance, field-effect transistor, quartz crystal micro-balance, etc. Then, we list several applications of odor biosensors, such as environmental monitoring, disease diagnosis, food quality control, and security. In addition, we analyze the future development of odor biosensors.
Keywords: biosensor; odorant; application; sensing method; fluorescence; olfactory receptor biosensor; odorant; application; sensing method; fluorescence; olfactory receptor

Share and Cite

MDPI and ACS Style

Deng, H.; Chen, Z.; Feng, P.; Tian, L.; Zong, H.; Nakamoto, T. Recent Advances and Applications of Odor Biosensors. Electronics 2025, 14, 1852. https://doi.org/10.3390/electronics14091852

AMA Style

Deng H, Chen Z, Feng P, Tian L, Zong H, Nakamoto T. Recent Advances and Applications of Odor Biosensors. Electronics. 2025; 14(9):1852. https://doi.org/10.3390/electronics14091852

Chicago/Turabian Style

Deng, Hongchao, Zhangyu Chen, Pengfei Feng, Lifeng Tian, Huijuan Zong, and Takamichi Nakamoto. 2025. "Recent Advances and Applications of Odor Biosensors" Electronics 14, no. 9: 1852. https://doi.org/10.3390/electronics14091852

APA Style

Deng, H., Chen, Z., Feng, P., Tian, L., Zong, H., & Nakamoto, T. (2025). Recent Advances and Applications of Odor Biosensors. Electronics, 14(9), 1852. https://doi.org/10.3390/electronics14091852

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