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首页> 外文期刊>Applied Physics Letters >Negative differential resistance in hydrated deoxyribonucleic acid thin films mediated by diffusion-limited water redox reactions
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Negative differential resistance in hydrated deoxyribonucleic acid thin films mediated by diffusion-limited water redox reactions

机译:扩散受限的水氧化还原反应介导的水合脱氧核糖核酸薄膜的负差分电阻

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摘要

Dc I-V characteristics of DNA films under variable relative humidity (RH) were obtained showing an exponential increase in current with increasing RH from 20% to 85%. Protonic conduction was signified in details by the presence of a negative differential resistance (NDR) in highly hydrated films. NDR was seen when RH was over ~70% at which the full coordination of DNA backbone with water molecules was expected. It is concluded that the protonic conduction is originated from water redox reactions and the NDR is the result of the limited diffusion of water on the surface of DNA molecules.
机译:获得了在可变相对湿度(RH)下DNA膜的DC-V特性,显示出电流随RH从20%增加到85%而呈指数增加。在高度水合的薄膜中,负负电阻(NDR)的存在标志着质子传导的细节。当相对湿度超过70%时,可以观察到NDR,此时预期DNA骨架与水分子完全协调。结论是,质子传导源自水的氧化还原反应,NDR是水在DNA分子表面有限扩散的结果。

著录项

  • 来源
    《Applied Physics Letters》 |2010年第1期|P.013306.1-013306.3|共3页
  • 作者

    H.-K. Lee; M. H.-C. Jin;

  • 作者单位

    Department of Materials Science and Engineering, University of Texas at Arlington, 500 West First Street, Suite 325, Arlington, Texas 76019, USA;

    Department of Materials Science and Engineering, University of Texas at Arlington, 500 West First Street, Suite 325, Arlington, Texas 76019, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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