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Artificial Olfactory Biohybrid System: An Evolving Sense of Smell

期刊

ADVANCED SCIENCE
卷 10, 期 5, 页码 -

出版社

WILEY
DOI: 10.1002/advs.202204726

关键词

artificial olfactory system; bioelectronic nose; biomimicry; biosensors; volatile organic compounds

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The bioelectronic nose (B-EN) is an emerging sensing technology that can identify volatile organic compounds (VOCs) with high sensitivity and specificity for applications in medical diagnosis, public security, environmental monitoring, and food safety. However, there is currently no commercially available B-EN on the market. This work discusses the structure and operational mechanisms of biomimetic olfactory systems, focusing on the development and immobilization of materials. Various biosensor applications and current developments are reviewed, along with the challenges and opportunities for realizing the potential of artificial olfactory biohybrid systems in fundamental and practical research.
The olfactory system can detect and recognize tens of thousands of volatile organic compounds (VOCs) at low concentrations in complex environments. Bioelectronic nose (B-EN), which mimics olfactory systems, is becoming an emerging sensing technology for identifying VOCs with sensitivity and specificity. B-ENs integrate electronic sensors with bioreceptors and pattern recognition technologies to enable medical diagnosis, public security, environmental monitoring, and food safety. However, there is currently no commercially available B-EN on the market. Apart from the high selectivity and sensitivity necessary for volatile organic compound analysis, commercial B-ENs must overcome issues impacting sensor operation and other problems associated with odor localization. The emergence of nanotechnology has provided a novel research concept for addressing these problems. In this work, the structure and operational mechanisms of biomimetic olfactory systems are discussed, with an emphasis on the development and immobilization of materials. Various biosensor applications and current developments are reviewed. Challenges and opportunities for fulfilling the potential of artificial olfactory biohybrid systems in fundamental and practical research are investigated in greater depth.

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