Mechanical and electroconductive properties of spatially distributed double stranded DNA arrays on Au (111)
作者： Donats Erts , Uldis Malinovskis , Indrikis Muiznieks , Eimer Tuite
DOI: 10.1016/J.TSF.2007.11.072
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摘要: Abstract Conductive AFM was used to investigate electroconductivity through 10 nm long double stranded DNA molecules in mixed monolayers of thioalkylated-DNA and mercaptohexanol (MCH) on Au (111) surface. The distribution the surface analyzed by tapping mode AFM. Measurements performed lift confirmed that protrude from rather than lie horizontally adsorbed interface. optimal conductivity measurement time, which is shorter mechanical relaxation time oligonucleotide duplexes, determined. It concluded duplexes have a resistance order ~ 2 Ω ⁎ m at 1 V.
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