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Volumn 96, Issue 5, 2004, Pages 2927-2936

Conductivity of DNA probed by conducting-atomic force microscopy: Effects of contact electrode, DNA structure, and surface interactions

Author keywords

[No Author keywords available]

Indexed keywords

ATOMIC FORCE MICROSCOPY; CURRENT VOLTAGE CHARACTERISTICS; ELECTRIC CONDUCTIVITY; ELECTRIC SPACE CHARGE; ELECTRODES; EVAPORATION; HYDRATION; HYDROPHILICITY; RESONANT TUNNELING; SILICON WAFERS; SURFACE TREATMENT; ULTRAVIOLET RADIATION;

EID: 4944266681     PISSN: 00218979     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1769606     Document Type: Article
Times cited : (58)

References (39)
  • 27
    • 0034832843 scopus 로고    scopus 로고
    • This is the optimal force. Below 10 nN, the electrical contact is unreliable. This is agreement with other C-AFM experiments on DNA (see Ref. 13). This loading force is not detrimental. Control TM-AFM images taken after the current measurements showed that DNA molecules are not systematically broken by this mechanical constraint. This loading force value was also shown to be optimal for reliable measurements on organic self-assembled monolayers [see: D. J. Wold and C. D. Frisbie, J. Am. Chem. Soc. 153, 5549 (2001)].
    • (2001) J. Am. Chem. Soc. , vol.153 , pp. 5549
    • Wold, D.J.1    Frisbie, C.D.2
  • 33
    • 4944232513 scopus 로고    scopus 로고
    • Ph.D. thesis, University of Lille
    • T. Heim, Ph.D. thesis, University of Lille, 2002.
    • (2002)
    • Heim, T.1
  • 36
    • 4944237280 scopus 로고    scopus 로고
    • note
    • Actually, the electronic structure of some of the samples is more complicated when using a pentacene layer between gold and DNA. Pentacene is a semiconductor, with a HOMO at -5 eV and a LUMO at -3.2 eV. Thus, the pentacene HOMO lines up with the Fermi level of the gold electrode, and then only a series resistance has to be considered in addition; the energy differences with the DNA molecular orbitals are not strongly modified.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.