14 Citations (Scopus)

Abstract

Gold has been the metal of choice for research on molecular tunneling junctions, but it is incompatible with complementary metal-oxide-semiconductor fabrication because it forms deep level traps in silicon. Palladium electrodes do not contaminate silicon, and also give higher tunnel current signals in the molecular tunnel junctions that we have studied. The result is cleaner signals in a recognition-tunneling junction that recognizes the four natural DNA bases as well as 5-methyl cytosine, with no spurious background signals. More than 75% of all the recorded signal peaks indicate the base correctly.

Original languageEnglish (US)
Article number425202
JournalNanotechnology
Volume23
Issue number42
DOIs
StatePublished - Oct 26 2012

Fingerprint

Tunnel junctions
Palladium
Silicon
Metals
Electrodes
Cytosine
Gold
Tunnels
DNA
Fabrication
Oxide semiconductors

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

Chang, S., Sen, S., Zhang, P., Gyarfas, B., Ashcroft, B., Lefkowitz, S., ... Lindsay, S. (2012). Palladium electrodes for molecular tunnel junctions. Nanotechnology, 23(42), [425202]. https://doi.org/10.1088/0957-4484/23/42/425202

Palladium electrodes for molecular tunnel junctions. / Chang, Shuai; Sen, Suman; Zhang, Peiming; Gyarfas, Brett; Ashcroft, Brian; Lefkowitz, Steven; Peng, Hongbo; Lindsay, Stuart.

In: Nanotechnology, Vol. 23, No. 42, 425202, 26.10.2012.

Research output: Contribution to journalArticle

Chang, S, Sen, S, Zhang, P, Gyarfas, B, Ashcroft, B, Lefkowitz, S, Peng, H & Lindsay, S 2012, 'Palladium electrodes for molecular tunnel junctions', Nanotechnology, vol. 23, no. 42, 425202. https://doi.org/10.1088/0957-4484/23/42/425202
Chang S, Sen S, Zhang P, Gyarfas B, Ashcroft B, Lefkowitz S et al. Palladium electrodes for molecular tunnel junctions. Nanotechnology. 2012 Oct 26;23(42). 425202. https://doi.org/10.1088/0957-4484/23/42/425202
Chang, Shuai ; Sen, Suman ; Zhang, Peiming ; Gyarfas, Brett ; Ashcroft, Brian ; Lefkowitz, Steven ; Peng, Hongbo ; Lindsay, Stuart. / Palladium electrodes for molecular tunnel junctions. In: Nanotechnology. 2012 ; Vol. 23, No. 42.
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AU - Lindsay, Stuart

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