Humidity Effects on Conductivity of DNA Molecules

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作者单位: College of Radiology, Taishan Medical University, Taian 271000, China School of Physical Science and Information Engineering, Liaocheng University, Liaocheng 252059, China

摘要: We present a model related to the humidity to describethe conductivity of homogeneous DNA molecule, where the hydrationof phosphate group and bases are taken into account. The calculatedresults show the oscillation feature of dI/dV-V curves and thesemiconductor behavior of DNA. With the relative humidity increasing,the voltage gap becomes narrow and the maximum of conductanceincreases nonlinearly. The conductivity of DNA approaches tostabilization when the relative humidity reaches a certain val...更多; We present a model related to the humidity to describethe conductivity of homogeneous DNA molecule, where the hydrationof phosphate group and bases are taken into account. The calculatedresults show the oscillation feature of dI/dV-V curves and thesemiconductor behavior of DNA. With the relative humidity increasing,the voltage gap becomes narrow and the maximum of conductanceincreases nonlinearly. The conductivity of DNA approaches tostabilization when the relative humidity reaches a certain value.These results are in agreement with experimental measurements.收起

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