Electrical characterization and analysis of carbon nanotube-peptide nucleic acid conjugates

Krishna V. Singh, Alfredo Martinez-Morales, Xiaoye Jing, Mihrimah Ozkan, Cengiz S. Ozkan, Fie Liu, Kang L. Wang

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

We report for the first time electron transport measurements of covalently functionalized single-walled-carbon-nanotubes (SWNT) with peptide-nucleic-acid (PNA). Individual SWNT-PNA-SWNT conjugates were tested by aligning them across pre-patterned gold microelectrodes. Corresponding analysis reveal that these conjugates exhibit negative differential resistance (NDR) that is characteristics of resonant tunneling diodes (RTD). The NDR behavior was observed only in SWNT-PNA conjugates and not individually in SWNTs or PNA alone, making them suitable candidates for future molecular electronics. This NDR behavior can be attributed to the type of molecular bonding between peptide and SWNT and alignment of their band energies.

原文English
頁(從 - 到)205-208
頁數4
期刊Journal of Nanoelectronics and Optoelectronics
2
發行號2
DOIs
出版狀態Published - 2007

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 電氣與電子工程

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