A Molecularly Imprinted Polymer-Graphene Sensor Antenna Hybrid for Ultra Sensitive Chemical Detection

A state-of-the-art gas sensor is developed to measure extremely small concentrations of a chemical vapor in the air in a range lower than 0.1 parts per billion. The sensor enables simultaneous measurement of a chemical (methyl salicylate) with a resonant electromagnetic structure and radiating the i...

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Bibliographic Details
Published in:IEEE sensors journal 2019-08, Vol.19 (16), p.6571-6577
Main Authors: Adams, Jason D., Emam, Shadi, Sun, Neville, Ma, Yufeng, Wang, Qingwu, Shashidhar, Ranganathan, Sun, Nian-Xiang
Format: Article
Language:English
Subjects:
Antenna
Antennas
Chemical detection
Chemical sensors
Gas detectors
Gas sensors
Graphene
HFSS
Imprinted polymers
Molecular imprinting
molecular imprinting polymer
molecular imprinting technique
Organic chemistry
Patch antennas
Polymers
ppt
Selectivity
Sensors
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Summary:A state-of-the-art gas sensor is developed to measure extremely small concentrations of a chemical vapor in the air in a range lower than 0.1 parts per billion. The sensor enables simultaneous measurement of a chemical (methyl salicylate) with a resonant electromagnetic structure and radiating the information back to a base station. The chemical sensor is composed of a layer of graphene (transduction layer) with a molecular imprinting polymer (MIP) layer (sensor) on top. This leads to a combination of the ultra high sensitivity of graphene with the exquisite selectivity of the molecular imprinting technique (MIT). The sensor is electrically embedded within a patch antenna. The simulation results using Ansoft high-frequency structure simulator (HFSS) are presented along with test data that show parts per trillion (ppt) detection levels.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2019.2913143