Effect of surface electrostatic interaction on sampling behavior of solute molecules at micro/extended-nano interface

Kazuma Okamoto, Yutaka Kazoe, Kazuma Mawatari, Takehiko Kitamori

研究成果: Conference contribution

抄録

We revealed that, in nanochannels with increased surface-to-volute ratio, surface electrostatic interactions restrict motion of solute molecules, and they significantly affect injection of solute molecules from micro to nanochannel by pressure-driven flow. 100% solute injection to the nanochannel was achieved in case of the solute without electric charge. The results indicate that uniform sampling from micro to nanochannel is prevented by the electrostatic interactions, and this can lead to significant bias of analytical results in nanofluidic devices. Accordingly, this study provides important knowledge for conceptual design of nanofluidic devices for analysis and ultra-high efficient separation.

本文言語English
ホスト出版物のタイトル21st International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2017
出版社Chemical and Biological Microsystems Society
ページ279-280
ページ数2
ISBN(電子版)9780692941836
出版ステータスPublished - 2020 1 1
外部発表はい
イベント21st International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2017 - Savannah, United States
継続期間: 2017 10 222017 10 26

出版物シリーズ

名前21st International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2017

Conference

Conference21st International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2017
CountryUnited States
CitySavannah
Period17/10/2217/10/26

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Bioengineering

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