標題: Semiconducting single-walled carbon nanotubes exposed to distilled water and aqueous solution: Electrical measurement and theoretical calculation
作者: Lu, MP
Hsiao, CY
Lo, PY
Wei, JH
Yang, YS
Chen, MJ
生物科技學系
電子工程學系及電子研究所
Department of Biological Science and Technology
Department of Electronics Engineering and Institute of Electronics
公開日期: 30-一月-2006
摘要: We fabricate and measure a single-walled carbon nanotube transistor having a liquid-gate electrode. The ratio value of I-on/I-off is as high as 10(4), indicating the presence of a semiconducting channel. A passivation layer over the source/drain electrode greatly suppresses the liquid-gate leakage by about three orders of magnitude. The channel currents are noticeably distinct between two liquid samples: distilled water and aqueous solution (1x10(-4) M NaCl). This biological sensing ability is attributed to the different electrical double-layer capacitances with respect to the bulk part of the channel. The corresponding theoretical calculation is carried out in detail. (c) 2006 American Institute of Physics.
URI: http://dx.doi.org/10.1063/1.2172014
http://hdl.handle.net/11536/12708
ISSN: 0003-6951
DOI: 10.1063/1.2172014
期刊: APPLIED PHYSICS LETTERS
Volume: 88
Issue: 5
結束頁: 
顯示於類別:期刊論文


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