標題: Room temperature negative differential resistance in DNA-based molecular devices
作者: Jangjian, Peng-Chung
Liu, Tzeng-Feng
Li, Mei-Yi
Tsai, Ming-Shih
Chang, Chia-Ching
材料科學與工程學系
生物科技學系
Department of Materials Science and Engineering
Department of Biological Science and Technology
關鍵字: biomolecular electronics;DNA;electrical conductivity;electrical resistivity;gold;oxidation;reduction (chemical)
公開日期: 26-Jan-2009
摘要: A molecular device fabricated from metallic deoxyribonucleic acid (M-DNA) exhibits a negative differential resistance (NDR) behavior. When two gold electrodes were connected by Ni(2+)-chelated DNA, which was converted from lambda-DNA, not only was the conductivity of DNA improved, but a NDR device was formed as a full cyclic voltage sweep was applied to measure its current versus voltage characteristics at room temperature and in an ambient environment. Such electronic characteristics of a M-DNA device may have been caused by the redox reactions of Ni ions. This finding provides a simple way to construct electrical nanodevices from biological molecules.
URI: http://dx.doi.org/10.1063/1.3074502
http://hdl.handle.net/11536/7726
ISSN: 0003-6951
DOI: 10.1063/1.3074502
期刊: APPLIED PHYSICS LETTERS
Volume: 94
Issue: 4
結束頁: 
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