Study of water properties in nanospace

Noritada Kaji, Ryo Ogawa, Akio Oki, Yasuhiro Horiike, Manabu Tokeshi, Yoshinobu Baba

研究成果: ジャーナルへの寄稿学術誌査読

50 被引用数 (Scopus)

抄録

Here we report an anomalous behavior of water, especially its viscosity and hydrodynamic flow, in a nanometer-confined space. As a typical model of a nanometer-confined space, the nanopillar chip, which was developed for DNA size-based separation was used, and single-particle tracking (SPT) technique was applied to investigate water viscosity and hydrodynamic flow in the nanopillar chip. The diffusion coefficients of nanospheres were almost one-third of the theoretical value derived from the Stokes-Einstein equation. This result gave indirect proof that water viscosity in a nanometer-confined space is higher than in a bulk solution. In order to improve resolution and throughput of the nanopillar chip for DNA separation, these potential factors affecting performance should be seriously considered.

本文言語英語
ページ(範囲)759-764
ページ数6
ジャーナルAnalytical and Bioanalytical Chemistry
386
3
DOI
出版ステータス出版済み - 10月 2006
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 分析化学
  • 生化学

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