한국진공학회:학술대회논문집 (Proceedings of the Korean Vacuum Society Conference)
- 한국진공학회 2011년도 제40회 동계학술대회 초록집
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- Pages.495-495
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- 2011
Biologically-Inspired Selective and Sensitive Trinitrotoluene Sensors Using Conjugated Lipid-like Polymer Nanocoatings for CNT-FET Sensors
- Jaworski, Justyn (University of California, Berkeley) ;
- Kim, Tae-Hyun (University of California, Berkeley) ;
- Yokoyama, Keisuke (SK Ltd.) ;
- Chung, Woo-Jae (University of California, Berkeley) ;
- Wang, Eddie (University of California, Berkeley) ;
- Lee, Byung-Yang (University of California, Berkeley) ;
- Hong, Seung-Hun (Seoul National University, Department of Physics and Astronomy) ;
- Majumdar, Arun (University of California, Berkeley) ;
- Lee, Seung-Wuk (University of California, Berkeley) ;
- Kwon, Ki-Young (Gyeongsang National University, Department of Chemistry)
- 발행 : 2011.02.09
초록
Miniaturized sensors capable of both sensitive and selective real-time monitoring of target analytes are tremendously valuable for various applications ranging from hazard detection to medical diagnostics. The wide-spread use of such sensors is currently limited due to insufficient selectivity for target molecules. We developed selective nanocoatings by combining trinitrotoluene (TNT) receptors bound to conjugated polydiacetylene (PDA) with single-walled carbon nanotube-field effect transistors (SWNT-FET). Selective binding events between TNT molecules and phage display derived TNT receptors were effectively transduced to sensitive SWNT-FET conductance sensors through the PDA coating. The resulting sensors exhibited unprecedented 1 fM sensitivity toward TNT in real time, with excellent selectivity over various similar aromatic compounds. Our biomimetic receptor coating approach may be useful for the development of sensitive and selective micro and nanoelectronic sensor devices for various other target analytes.