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Electrical Property of Immobilized SWNTs Bundle as Bridge between Electrodes in Nanobiosensor Depending on Solvent Characteristics

시료용액의 특성에 따른 고정화된 단일벽 탄소나노튜브의 전기적 거동

  • Lee, Jinyoung (Department of Plant and Food Sciences, Sangmyung University) ;
  • Cho, Jaehoon (Green Process and Materials R&D Group, Korea Institute of Industrial Technology (KITECH)) ;
  • Park, Chulhwan (Department of Chemical Engineering, Kwangwoon University)
  • 이진영 (상명대학교 식물식품공학과) ;
  • 조재훈 (한국생산기술연구원 그린공정소재그룹) ;
  • 박철환 (광운대학교 화학공학과)
  • Received : 2016.07.01
  • Accepted : 2016.09.29
  • Published : 2017.02.01

Abstract

In recent, it is worldwide issued that nanoscale science and technology as a solution have supported to increase the sensing performance in carbon nanotube based biosensor system. Containing material chemistry in various nanostructures has formed their high potentials for stabilizing and activating biocatalyst as a bioreceptor for medical, food contaminants, and environmental detections using electrode modification technologies. Especially, the large surface area provides the attachment of biocatalysts increasing the biocatalyst loading. Therefore, nano-scale engineering of the biocatalysts have been suggested to be the next stage advancement of biosensors. Here, we would like to study the electrical mechanism depending on the exposure methods (soaking or dropping) to the sample solution to the assembled carbon nanotubes (CNTs) on the gold electrodes of biosensor for a simple and highly sensitive detection. We performed various experiments using polar and non-polar solutions as sampling tests and identified electrical response of assembled CNTs in those solutions.

Keywords

Carbon Nanotube;Nanobiosensor;Polar;Electron Transfer

Acknowledgement

Supported by : 한국연구재단

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