組込型デバイス EvaChip を用いたマイクロデバイス内のナノ粒子ゼータ電位計測

抄録

The purpose of this study is to establish a measurement method of gold nanoparticles zeta potential using builtin device called Evachip. Evanescent wave generated using an Evachip are capable of illuminating the vicinity of an interface easily. The conventional measurement methods of nanoparticle zeta-potentials had complicated optical systems and cost a lot. Therefore a simpler measurement method was desired. Gold nanoparticles zeta potential was estimated from electrophoresis velocities using the formulas of Helmholtz-Smoluchowski. This measurement method using evanescent enabled nanoparticle zeta-potential measurement in the vicinity of the liquid-solid interface.