DNA sensors based on CNT-FET with floating electrodes

Byeongju Kim, Joohyung Lee, Seon Namgung, Jeongsu Kim, Jae Yeol Park, Moon Sook Lee, Seunghun Hong

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

We report a successful development of a floating electrode-based DNA sensor with controllable responses. Here, metallic floating electrodes were fabricated to form Schottky barriers between carbon nanotubes and the floating electrodes. We showed that the sensor response could be enhanced by increasing the number of floating electrodes. We also analyzed the response of the sensors based on the Langmuir isotherm theory.

Original languageEnglish (US)
Pages (from-to)182-187
Number of pages6
JournalSensors and Actuators, B: Chemical
Volume169
DOIs
StatePublished - Jul 5 2012

Bibliographical note

Funding Information:
This research was supported by the Conversing Research Center Program (No. 2011K000683). S.H. acknowledges the support from the National Research Foundation of Korea (NRF) grant (No. 2011-0000390 ) and the Samsung electronics .

Keywords

  • Carbon nanotube
  • DNA
  • Floating electrode
  • Schottky barrier
  • Sensor

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