• DOI:10.1063/1.3074502
• Corpus ID: 98774754

Room temperature negative differential resistance in DNA-based molecular devices

@article{JangJian2009RoomTN,
  title={Room temperature negative differential resistance in DNA-based molecular devices},
  author={Peng-Chung JangJian and Tzeng-Feng Liu and Mei Yi Li and Ming Shih Tsai and Chia-Ching Chang},
  journal={Applied Physics Letters},
  year={2009},
  volume={94},
  pages={043105}
}

• Peng-Chung JangJian, Tzeng-Feng Liu, +2 authors Chia-Ching Chang
• Published 26 January 2009
• Chemistry
• Applied Physics Letters

A molecular device fabricated from metallic deoxyribonucleic acid (M-DNA) exhibits a negative differential resistance (NDR) behavior. When two gold electrodes were connected by Ni2+-chelated DNA, which was converted from λ-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.