Radio-Frequency/Microwave Gas Sensors Using Conducting Polymer

• Published in: Materials Vol. 13; no. 12; p. 2859
• Main Authors: Jang, Chorom, Park, Jin-Kwan, Yun, Gi-Ho, Choi, Hyang Hee, Lee, Hee-Jo, Yook, Jong-Gwan
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 25-06-2020; MDPI
• Subjects: Carbon; Chemical sensors; Conducting polymers; Ethanol; Gas sensors; Gases; Microwave frequencies; Nitrogen; Oxidation; Polyanilines; Polymers; Polypyrroles; Radio frequency; Review; Semiconductor doping; Sensors; polypyrrole; radio-frequency; conducting polymer; gas sensor; polyaniline; organic material; poly(3,4-ethylenedioxythiophene); microwave
• ISSN: 1996-1944; 1996-1944
• DOI: 10.3390/ma13122859

In this review, the advances in radio-frequency (RF) /microwave chemical gas sensors using conducting polymers are discussed. First, the introduction of various conducting polymers is described. Only polyaniline (PANi), polypyrrole (PPy) and poly(3,4-ethylenedioxythiophene) (PEDOT), which are mainly used for gas sensors in RF/microwave region, are focused in this review. Sensing mechanism of the three conducting polymers are presented. And the RF/microwave characteristics and RF/microwave applications of the three conducting polymers are discussed. Moreover, the gas sensors using conducting polymers in RF/microwave frequencies are described. Finally, the the challenges and the prospects of the next generation of the RF/microwave based chemical sensors for wireless applications are proposed.