S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Chemical and Biological Engineering (화학생물공학부) Journal Papers (저널논문_화학생물공학부)
Mimicking the human smell sensing mechanism with an artificial nose platform
Cited 83 time in Web of Science Cited 96 time in Scopus
- Issue Date
- Elsevier Ltd.
- Biomaterials Vol.33 No.6, pp. 1722-1729
- 복합학 ; Nanobioelectronic nose ; Human olfactory receptor ; Conducting polymer nanotube ; Antagonism
- Sensing smell is a highly complex biological process, and characterizing and mimicking the interaction between the olfactory receptor (OR) protein and its ligands is extremely challenging. Herein, we report a highly sensitive and selective human nose-like nanobioelectronic nose (nbe-nose), which responds to gaseous odorants sensitively and selectively, has a signal specificity pattern similar to that in the cellular signal transduction pathway, and maintains an antagonistic behavior similar to the human nose. The human olfaction mechanism was mimicked by using carboxylated polypyrrole nanotubes (CPNTs) functionalized with human OR protein. The nbe-nose was able to detect gaseous odorants at a concentration as low as 0.02 parts-per-trillion (ppt), which was comparable to a highly trained, human expert's nose. The nbe-nose can be used scientifically for smell mechanism studies. It can be also applied to various fields that rely on smell monitoring for industrial and public purposes. (C) 2011 Elsevier Ltd. All rights reserved.
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