Evanescent wave-based particle tracking technique for velocity distribution in extended nanochannel

Y. Kazoe, K. Iseki, K. Mawatari, T. Kitamori

研究成果: Conference contribution

抄録

Understanding fluid flows in extended nanospace (10-1000 nm) is a fundamental issue to develop novel nanofluidic systems. The present study measured pressure driven flows in a 400 nm fused silica nanochannel by 100-300 kPa. A nanoscale particle tracking method using 64 nm fluorescent nanoparticle and the evanescent wave with total internal reflection of laser beam was developed to obtain the flow profile. The particle position in the nanochannel was determined from the fluorescent intensity, which is proportional to the evanescent wave intensity decaying exponentially from the wall. In order to reduce an error by the Brownian diffusion of tracer nanoparticles, the time resolution of the particle tracking was reduced to 260 us. Flow velocity in the nanochannel, which is much smaller than the optical diffraction limit, was successfully obtained. This study provides basic knowledge of fluid and mass transport in nanospace.

本文言語English
ホスト出版物のタイトルTechnical Proceedings of the 2013 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2013
ページ277-280
ページ数4
出版ステータスPublished - 2013 8月 9
外部発表はい
イベントNanotechnology 2013: Electronics, Devices, Fabrication, MEMS, Fluidics and Computational - 2013 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2013 - Washington, DC, United States
継続期間: 2013 5月 122013 5月 16

出版物シリーズ

名前Technical Proceedings of the 2013 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2013
2

Conference

ConferenceNanotechnology 2013: Electronics, Devices, Fabrication, MEMS, Fluidics and Computational - 2013 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2013
国/地域United States
CityWashington, DC
Period13/5/1213/5/16

ASJC Scopus subject areas

  • バイオテクノロジー

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