IEEE Sensors Journal · 2019 · 29 citations · 16 references
EngineeringMaterials EngineeringMaterials ScienceAntennasNanomaterialsSensorsChemical SensorsGas SensorsGraphene NanomaterialsNanosensorsSensor FundamentalsSensor MaterialsGraphene Gas SensorsGraphene SensorsMolecularly Imprinted MaterialsMolecularly Imprinted Polymer SensorsMolecularly Imprinted PolymersMolecularly Imprinted SensorsSelectivityTransduction
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.
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Detection of individual gas molecules adsorbed on graphene
F. Schedin, A. K. Geǐm, E.W. Hill et al. · Nature Materials · 2007 · 8K citations · Full text
Tim O. Wehling, Kostya S. Novoselov, M. I. Katsnelson et al. · Nano Letters · 2007 · 1.1K citations · Full text
Acetone in the atmosphere: Distribution, sources, and sinks
H. B. Singh, D. O'Hara, D. Herlth et al. · Journal of Geophysical Research Atmospheres · 1994 · 384 citations · Full text