Liquid Filling Method for Nanofluidic Channels Utilizing the High Solubility of CO<sub>2</sub>

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  • TAMAKI Eiichiro
    Department of Applied Chemistry, School of Engineering, The University of Tokyo
  • HIBARA Akihide
    Department of Applied Chemistry, School of Engineering, The University of Tokyo
  • KIM Haeng-Boo
    Department of Applied Chemistry, School of Engineering, The University of Tokyo
  • TOKESHI Manabu
    Micro Chemistry Group, Kanagawa Academy of Science and Technology
  • OOI Takeshi
    Department of Engineering Synthesis, School of Engineering, The University of Tokyo
  • NAKAO Masayuki
    Department of Engineering Synthesis, School of Engineering, The University of Tokyo
  • KITAMORI Takehiko
    Department of Applied Chemistry, School of Engineering, The University of Tokyo Micro Chemistry Group, Kanagawa Academy of Science and Technology Core Research for Evolutional Science and Technology, Japan Science and Technology Agency

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Other Title
  • Liquid Filling Method for Nanofluidic Channels Utilizing the High Solubility of CO2

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Abstract

We developed a fabrication method and a liquid filling method for a nano chemical reactor that used Y-shaped nanochannels specially designed for mixing and reacting. In order to reduce the pressure loss and to utilize the characteristics of the nanochannel, inlet microchannels were fabricated just beside the nanochannels. We investigated an initial liquid filling method into the nanochannels that ensured there were no air bubbles that could cause a flow stack due to the capillary pressure. In our method, the micro- and nanochannels were filled with carbon dioxide and any remaining air during the initial liquid introduction was dissolved utilizing the high solubility of carbon dioxide. We propose that chemical reactions in nanospaces can be realized by utilizing these fabrication and liquid introduction techniques.

Journal

  • Analytical Sciences

    Analytical Sciences 22 (4), 529-532, 2006

    The Japan Society for Analytical Chemistry

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