振動誘起流れを用いたナノサイズ粒子の濃縮

抄録

In this study, we propose a method for concentration of nanoparticles based on vibration-induced flow. In recent years, analysis technologies of nanoparticles are attracting large attention in the fields of genetics and medicine. To analyze nanoparticles, concentration techniques of nanoparticles is demanded. Microfluidic chip is one of the powerful tools to realize low-cost and easy concentration of nanoparticles. We report on-chip concentration method of nanoparticles by using vibration-induced flow. Vibration-induced flow is local flow around vibrating microstructures. Additionally, this flow becomes strongly localized under condition of high applied frequency. Thus, we can manipulate nanoparticles by using this flow because large particles are weakly affected strongly-localized flow. In this study, we confirmed reduction of flow induced area by using vibration of high frequency. In addition, we demonstrated concentration of nanoparticles by using vibration-induced flow under condition of high frequency.