Abstract
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.
| Original language | English |
|---|---|
| Article number | 234104 |
| Journal | Applied Physics Letters |
| Volume | 95 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - 2009 |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
Fluorescence imaging technique of surface electrostatic potential using evanescent wave illumination. / Kazoe, Yutaka; Miyakawa, Shu; Miki, Norihisa; Sato, Yohei.
In: Applied Physics Letters, Vol. 95, No. 23, 234104, 2009.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fluorescence imaging technique of surface electrostatic potential using evanescent wave illumination
AU - Kazoe, Yutaka
AU - Miyakawa, Shu
AU - Miki, Norihisa
AU - Sato, Yohei
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=71949104448&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=71949104448&partnerID=8YFLogxK
U2 - 10.1063/1.3266842
DO - 10.1063/1.3266842
M3 - Article
VL - 95
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 23
M1 - 234104
ER -