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  1. No Access

    Article

    PM2.5 Particle Detection in a Microfluidic Device by Using Ionic Current Sensing

    We have demonstrated a PM2.5 analysis method that adds information on the number concentration and size by using microfluidic-based ionic current sensing with a bridge circuit. The bridge circuit allows for suppr...

    Taisuke Shimada, Hirotoshi Yasaki, Takao Yasui, Takeshi Yanagida… in Analytical Sciences (2018)

  2. No Access

    Article

    Effect of DNA Methylation on the Velocity of DNA Translocation through a Nanochannel

    Here, we report the effect of DNA methylation on the velocity of DNA translocation through a nanochannel, as determined by measuring differences in translocation velocities between methylated and non-methylate...

    **aoyin Sun, Takao Yasui, Takeshi Yanagida, Noritada Kaji… in Analytical Sciences (2017)

  3. No Access

    Article

    Nanostructures Integrated with a Nanochannel for Slowing Down DNA Translocation Velocity for Nanopore Sequencing

    Here, we developed a device integrated with a nanochannel and nanostructures to slow DNA translocation velocity. We found that translocation velocity of a single DNA molecule inside a nanochannel was decreased...

    **aoyin Sun, Takao Yasui, Takeshi Yanagida, Noritada Kaji… in Analytical Sciences (2017)

  4. No Access

    Article

    Self-assembled Nanowire Arrays as Three-dimensional Nanopores for Filtration of DNA Molecules

    Molecular filtration and purification play important roles for biomolecule analysis. However, it is still necessary to improve efficiency and reduce the filtration time. Here, we show self-assembled nanowire a...

    Sakon Rahong, Takao Yasui, Takeshi Yanagida, Kazuki Nagashima… in Analytical Sciences (2015)

  5. No Access

    Chapter and Conference Paper

    Optimal Design of the Micromixer using Nonhomogeneous Multilayer Laminar Flow

    An efficient micromixer using nonhomogeneous multilayer in the laminar flow regime is described. In order to increase the mixing efficiency, the CFD simulation was used to optimize the width of the multilayers...

    Masaki Kanai, Daisuke Uchida, Satoshi Sugiura… in Micro Total Analysis Systems 2002 (2002)

  6. No Access

    Chapter and Conference Paper

    Evaluation of Silanol Concentration on Quartz Glass Surface for EOF Stability of CE Chip

    The effects of heat treatment during fabrication process and NaOH treatment after fabrication on surface silanol (Si-OH) concentration profile are discussed. FTIR-ATR (Fourier transform Infrared Spectroscopy -...

    Takahiro Nishimoto, Hirohisa Abe, Yoichi Fujiyama… in Micro Total Analysis Systems 2001 (2001)