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An Optical Olfactory Sensor Based on Porous Silicon Infiltrated with Room‐Temperature Ionic Liquid Arrays
Author(s) -
Shang Yunling,
Zhang Haijuan,
Wang Xiaobo,
Wu Jianmin
Publication year - 2011
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201101572
Subject(s) - porous silicon , ionic liquid , silicon , infiltration (hvac) , porosity , materials science , porous medium , optoelectronics , computer science , nanotechnology , chemistry , composite material , organic chemistry , catalysis
Smell gas with a PSi/IL array! Optical sensor arrays for mimicking the olfactory ability of animals were created by infiltration of an array of ionic liquids (ILs) into the nanochannels of a patterned porous silicon (PSi) rugate filter (see figure). Sensing and recognizing the volatile organic compounds was achieved by monitoring the peak shift of reflectance spectra on each sensing spot followed by principal component analysis.