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

Jason D. Adams, Shadi Emam, Neville Sun, Yufeng Ma, Qingwu Wang, Ranganathan Shashidhar, Nian Xiang Sun

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

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.

Original languageEnglish (US)
Article number8698823
Pages (from-to)6571-6577
Number of pages7
JournalIEEE Sensors Journal
Volume19
Issue number16
DOIs
StatePublished - Aug 15 2019

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Electrical and Electronic Engineering

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