The conductive properties of single DNA molecules studied by torsion tunneling atomic force microscopy

W Wang; D X Niu; C R Jiang; X J Yang

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The conductive properties of single DNA molecules studied by torsion tunneling atomic force microscopy

机译：扭转隧道原子力显微镜研究单个DNA分子的导电特性

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The conductive properties of single natural λ-DNA molecules are studied by torsion tunneling atomic force microscopy (TR-TUNA). The currents both parallel to and perpendicular to the DNA chains are investigated, but only weak or even no current signals are detected by TR-TUNA. To improve the conductance of DNA molecules, silver and copper metallized DNAs are fabricated and their conductivities are checked by TR-TUNA. It is found that for both Cu- and Ag-DNAs, the conductivity perpendicular to the DNA chain is enhanced significantly as the metal clusters are attached to the DNA chains. But parallel to the chain the electrical transport is still weak, most probably due to the 'beads-on-a-string' constructions of metallized DNAs.

机译：通过扭转隧道原子力显微镜（TR-TUNA）研究了单个天然λ-DNA分子的导电特性。研究了平行和垂直于DNA链的电流，但是TR-TUNA仅检测到微弱甚至没有电流信号。为了提高DNA分子的电导率，制备了银和铜金属化的DNA，并通过TR-TUNA检查了它们的电导率。发现对于Cu-DNA和Ag-DNA两者，当金属簇附接到DNA链上时，垂直于DNA链的电导率显着提高。但与链平行的电传输仍然很弱，这很可能是由于金属化DNA的“串珠”结构所致。

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《Nanotechnology》 |2014年第2期|共7页
作者
W Wang; D X Niu; C R Jiang; X J Yang;
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正文语种 eng
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torsion tunneling atomic force microscopy (TR-TUNA); conductance; λ-DNA; metallic DNA;

机译：扭转隧道原子力显微镜（TR-TUNA）;电导率;λ-DNA;金属DNA;

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专利

1. The conductive properties of single DNA molecules studied by torsion tunneling atomic force microscopy [J] . W Wang, D X Niu, C R Jiang, Nanotechnology . 2014,第2期

机译：扭转隧道原子力显微镜研究单个DNA分子的导电特性
2. Resonant tunneling of electrons through single self-assembled InAs quantum dot studied by conductive atomic force microscopy [J] . Tanaka I., Tada Y., Nakatani S., Physica, E. Low-dimensional systems & nanostructures . 2010,第10期

机译：电子通过单个自组装InAs量子点的共振隧穿，通过导电原子力显微镜研究
3. Molecular Processes Studied at a Single-Molecule Level Using DNA Origami Nanostructures and Atomic Force Microscopy [J] . Bald Ilko, Keller Adrian Molecules . 2014,第9期

机译：使用DNA折纸纳米结构和原子力显微镜研究单分子水平的分子过程
4. The structure of Mn_6~(III) Cr~(III)~(3+) single-molecule magnets deposited in submonolayers and monolayers on surfaces studied by means of molecular resolved atomic force microscopy (AFM) and Kelvin Probe Force Microscopy in UHV [C] . U. Heinzmann, A. Gryzia, T. Volkmann, ICPEAC . 2014

机译：Mn_6〜（III）Cr〜（III）Cr〜（III）的结构〜（3+）单分子磁体沉积在通过分子分辨的原子力显微镜（AFM）和UHV中的Kelvin探针力显微镜（AFM）和Kelvin探针力显微镜研究的表面上的单层磁体
5. Conductivity measurements of single DNA molecules using conductive-atomic force microscopy [D] . Lu, Shun 2006

机译：使用导电原子力显微镜对单个DNA分子的电导率测量
6. Influence of Oxygen Pressure on the Domain Dynamics and Local Electrical Properties of BiFe0.95Mn0.05O3 Thin Films Studied by Piezoresponse Force Microscopy and Conductive Atomic Force Microscopy [O] . Kunyu Zhao, Huizhu Yu, Jian Zou, 2017

机译：氧响应对BiFe0.95Mn0.05O3薄膜的畴动态和局部电学特性的压电响应力显微镜和导电原子力显微镜研究
7. Influence of Oxygen Pressure on the Domain Dynamics and Local Electrical Properties of BiFe0.95Mn0.05O3 Thin Films Studied by Piezoresponse Force Microscopy and Conductive Atomic Force Microscopy [O] . Kunyu Zhao, Huizhu Yu, Jian Zou, 2017

机译：氧压对BiFe0.95mn0.05O3薄膜的畴动力学和局域电学性质的影响研究piezoresponse力显微镜和导电原子力显微镜

The conductive properties of single DNA molecules studied by torsion tunneling atomic force microscopy

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