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Berlin 2012 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 13: Transport: Poster Session

TT 13.29: Poster

Monday, March 26, 2012, 15:00–19:00, Poster B

Electrical characterization of single molecules in liquid environmentsMatthias Wieser, •Torsten Sendler, Jochen Grebing, and Artur Erbe — Helmholtz-Zentrum Dresden-Rossendorf

We have developed the mechanical controllable break junction technique for the use in liquid environments in order to characterize the electrical properties of single molecules in their solvents. The metallic electrodes, which form the contacts for the molecular structures, are produced on an insulating substrate in order to reduce all spurious effects coming from parallel conduction through the liquid. We present first electrical characterization of such junctions in dry and in liquid environments. The solvents range from aqueous buffer, which will be used for measurements of DNA fragments, to toluene and THF, which are typical solvents for short, conjugated organic molecules.

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