Fluorescence imaging technique of surface electrostatic potential using evanescent wave illumination

研究成果: Article査読

12 被引用数 (Scopus)

抄録

The electrostatic potential at a solid-liquid interface (i.e., the zeta potential) is a dominant factor in electric adsorption and microchannel flows. This study proposes a fluorescence-based technique for obtaining color image of modified surface and directly measuring zeta potential. The evanescent wave is used as an excitation light for anions and cations that emit fluorescence at two different wavelengths. Patterns of self-assembled monolayers in a closed microchannel were visualized and their zeta potential distributions were measured. This technique will contribute to development of technical applications in the fields of microfluidics and material science.

本文言語English
論文番号234104
ジャーナルApplied Physics Letters
95
23
DOI
出版ステータスPublished - 2009

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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