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  • 标题:Prevention of Dielectric Breakdown of Nanopore Membranes by Charge Neutralization
  • 本地全文:下载
  • 作者:Kazuma Matsui ; Itaru Yanagi ; Yusuke Goto
  • 期刊名称:Scientific Reports
  • 电子版ISSN:2045-2322
  • 出版年度:2015
  • 卷号:5
  • 期号:1
  • DOI:10.1038/srep17819
  • 语种:English
  • 出版社:Springer Nature
  • 摘要:To achieve DNA sequencing using a solid-state nanopore, it is necessary to reduce the electric noise current. The noise current can be decreased by reducing the capacitance ( C ) of the nanopore device. However, we found that an electric-charge difference (Δ Q ) between the electrolyte in one chamber and the electrolyte in another chamber occurred. For low capacitance devices, this electric-charge imbalance can lead to unexpectedly high voltage (Δ V = Δ Q/C ) which disrupted the membrane when the two electrolytes were independently poured into the chambers. We elucidated the mechanism for the generation of initial defects and established new procedures for preventing the generation of defects by connecting an electric bypass between the chambers.
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