High-frequency characteristics of conducting polymer for gas-sensor

Hee Jo Lee, Byung Hyun Kim, Yong Joo Lee, Yunseog Hong, Jong Gwan Yook, Seung Hwan Lee, Jung Joon Lee, Hyang Hee Choi

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


In this paper, we report the intrinsic characteristics of conducting polymer for gas-sensor at high frequency region, i.e., 500 MHz to 10 GHz. To investigate the high-frequency characteristics of conducting polymer (CP), a coplanar waveguide electrode (CPW) is utilized. First, a CPW without CP, i.e., an open CPW, is simulated by a full-wave electromagnetic solver. From the simulated and measured result, we find that the open CPW shows clearly capacitive component. For a CPW with CP, it shows constant transmission characteristic of approximately 3-4 dB level at overall frequency region. This indicates that CP may be a good sensing material for detection of various gases or vapors in the high frequency region because its electrical properties can be sensitively varied with surface modification of gas absorption and desorption. As a result, if CP is possible to realize the various radio-frequency (RF) circuits and devices, we suggest that it can be used for diverse RF gas- as well as bio-sensing applications.

Original languageEnglish
Article number6985446
Pages (from-to)2082-2085
Number of pages4
JournalProceedings of IEEE Sensors
Issue numberDecember
Publication statusPublished - 2014 Dec 12
Event13th IEEE SENSORS Conference, SENSORS 2014 - Valencia, Spain
Duration: 2014 Nov 22014 Nov 5

Bibliographical note

Publisher Copyright:
© 2014 IEEE.

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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