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相关论文: A simple model of the charge transfer in DNA-like …

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The rapid progress in the field of molecular electronics has led to an increasing interest on DNA oligomers as possible components of electronic circuits at the nanoscale. For this, however, an understanding of charge transfer and transport…

软凝聚态物质 · 物理学 2007-05-23 R. Gutierrez , G. Cuniberti

Recent works on localized charge transport along DNA, based on a three--dimensional, tight--binding model (Eur. Phys. J. B 30:211, 2002; Phys. D 180:256, 2003), suggest that charge transport is mediated by the coupling of the radial and…

斑图形成与孤子 · 物理学 2007-05-23 F. Palmero , J. F. R. Archilla , D. Hennig , F. R. Romero

Charge migration along DNA molecules has attracted scientific interest for over half a century. Reports on possible high rates of charge transfer between donor and acceptor through the DNA, obtained in the last decade from solution…

材料科学 · 物理学 2009-11-10 Danny Porath , Gianaurelio Cuniberti , Rosa Di Felice

We study a model for polaron-like charge transport mechanism along DNA molecules with emphasis on the impact of parametrical and structural disorder. Our model Hamiltonian takes into account the coupling of the charge carrier to two…

斑图形成与孤子 · 物理学 2015-06-26 D. Hennig , J. F. R. Archilla , J. Agarwal

We study the electronic properties of DNA by way of a tight-binding model applied to four particular DNA sequences. The charge transfer properties are presented in terms of localisation lengths, crudely speaking the length over which…

基因组学 · 定量生物学 2007-05-23 Daphne Klotsa , Rudolf A. Roemer , Matthew S. Turner

Two models for energy and charge transport and storage in biomolecules are considered. A model based on the discrete nonlinear Schrodinger equation with long-range dispersive interactions (LRI's) between base pairs of DNA is offered for the…

Measurements of electron transfer rates as well as of charge transport characteristics in DNA produced a number of seemingly contradictory results, ranging from insulating behaviour to the suggestion that DNA is an efficient medium for…

软凝聚态物质 · 物理学 2007-05-23 R. Bulla , R. Gutierrez , G. Cuniberti

We study an intermediate quantum coherent-incoherent charge transport mechanism in metal-molecule-metal junctions using B\"uttiker's probe technique. This tool allows us to include incoherent effects in a controlled manner, and thus to…

介观与纳米尺度物理 · 物理学 2017-04-12 Hyehwang Kim , Michael Kilgour , Dvira Segal

We study the transport of charge due to polarons in a model of DNA which takes in account its 3D structure and the coupling of the electron wave function with the H--bond distortions and the twist motions of the base pairs. Perturbations of…

斑图形成与孤子 · 物理学 2018-08-16 J. F. R. Archilla , D. Hennig , J. Agarwal

Microscopic mechanisms of positive charge transfer in DNA remain unclear. A quantum state of electron hole in DNA is determined by the competition of a pi-stacking interaction $b$ smearing a charge between different base pairs and…

软凝聚态物质 · 物理学 2008-03-15 D. B. Uskov , A. L. Burin

Charge transfer can take place along double helical DNA over distances as long as 30 nanometers. However, given the active role of the thermal environment surrounding charge carriers in DNA, physical mechanisms driving the transfer process…

介观与纳米尺度物理 · 物理学 2020-12-04 Roman Korol , Dvira Segal

An 1d model with time-dependent random hopping is proposed to describe charge transport in DNA. It admits to investigate both diffusion of electrons and their tunneling between different sites in DNA. The tunneling appears to be strongly…

软凝聚态物质 · 物理学 2009-11-07 E. I. Kats , V. V. Lebedev

Quantum transport for DNA conduction has widely studied with interest in application as a candidate in making nanowires as well as interest in the scientific mechanism. In this paper, we review recent works with concerning the electronic…

无序系统与神经网络 · 物理学 2015-03-13 Hiroaki Yamada , Kazumoto Iguchi

Modeling charge transport in DNA is essential to understand and control the electrical properties and develop DNA-based nanoelectronics. DNA is a fluctuating molecule that exists in a solvent environment, which makes the electron…

生物物理 · 物理学 2023-10-05 Hashem Mohammad , M. P. Anantram

Microscopic mechanisms of positive charge transfer in DNA remain unclear. A quantum state of electron hole in DNA is determined by the competition of the pi-stacking interaction $b$ sharing a charge between different base pairs and the…

软凝聚态物质 · 物理学 2008-06-06 Dmitry B. Uskov , Alexander L. Burin

In the field of DNA nanotechnology, it is common wisdom that charge transport occurs through the {\pi} stacked bases of double-stranded DNA. However, recent experimental findings by Zhuravel et. al. [Nat. Nanotech. 15, 836 (2020)] suggest…

介观与纳米尺度物理 · 物理学 2024-12-31 Sourav Kundu , Siddhartha Lal

We present a short review of various experiments that measure charge transfer and charge transport in DNA. Some general comments are made on the possible connection between 'chemistry-style' charge transfer experiments that probe…

无序系统与神经网络 · 物理学 2009-11-10 N. P. Armitage , M. Briman , G. Gruner

Charge transfer in a DNA duplex chain is studied by constructing a system with virtual electrodes connected at the ends of each DNA strand. The systeym is described by the tight-binding model and its transport is analyzed by the transfer…

介观与纳米尺度物理 · 物理学 2009-11-11 X. F. Wang , Tapash Chakraborty

First principle calculations of charge transfer in DNA molecules are computationally expensive given that charge carriers migrate in interaction with intra- and inter-molecular atomic motion. Screening sequences, e.g. to identify excellent…

介观与纳米尺度物理 · 物理学 2020-12-04 Roman Korol , Dvira Segal

The influence of decoherence and bonding on the linear conductance of single double-stranded DNA molecules is examined by fitting a phenomenological statistical model developed recently (EPJB {\bf 68}, 237 (2009)) to experimental results.…

软凝聚态物质 · 物理学 2010-09-30 M. Zilly , O. Ujsaghy , D. E. Wolf
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