Negative Differential Resistance In Hydrated Deoxyribonucleic Acid Thin Films Mediated By Diffusion-limited Redox Reaction

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Title: Negative Differential Resistance In Hydrated Deoxyribonucleic Acid Thin Films Mediated By Diffusion-limited Redox Reaction
Author: Lee, Hou Kuan
Abstract: The charge transport mechanisms in DNA proposed in the literature cover broad range of possibilities including molecular band conduction , superexchange , multistep hole hopping , and polaron hopping . The reason for the surprisingly diverse results is all the variables in the experiments - DNA sequence , DNA characteristic (single molecule or bundle , DNA length ) , the metal /DNA contacts , and the environmental dissimilarities in temperature , humidity , etc . In this study , the humidity effect on the electrical conduction in DNA was systematically investigated in a humidity chamber over the wide range of DC voltage . The exponential increase in conduction with increasing humidity was observed for the natural DNA thin -film , and it was attributed to the protonic conduction by the electrolysis of water . In addition , the negative differential resistance was measured in highly hydrated DNA films . The detailed analysis revealed that it was caused by the slow diffusion of water molecules on the surface of DNA molecules .
URI: http : / /hdl .handle .net /10106 /2019
Date: 2010-03-03

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Negative Differential Resistance In Hydrated Deoxyribonucleic Acid Thin Films Mediated By Diffusion-limited Redox Reaction. Available electronically from http : / /hdl .handle .net /10106 /2019 .

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