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QUANTITATIVE EVALUATION METHOD AND DEVICE FOR ZETA POTENTIAL, pH OR TEMPERATURE DISTRIBUTION AT WALL SURFACE, AND QUANTITATIVE VISUALIZATION METHOD AND DEVICE FOR SURFACE MODIFICATION

Foreign code F100002322
File No. S2009-0027-N0
Posted date 2010年12月9日
Country 世界知的所有権機関(WIPO)
International application number 2009JP066652
International publication number WO 2010/041560
Date of international filing 平成21年9月25日(2009.9.25)
Date of international publication 平成22年4月15日(2010.4.15)
Priority data
  • 特願2008-263639 (2008.10.10) JP
Title QUANTITATIVE EVALUATION METHOD AND DEVICE FOR ZETA POTENTIAL, pH OR TEMPERATURE DISTRIBUTION AT WALL SURFACE, AND QUANTITATIVE VISUALIZATION METHOD AND DEVICE FOR SURFACE MODIFICATION
Abstract Multiple fluorescent dyes having different amounts of charge or charge characteristics and different fluorescent wavelengths are mixed into a solution, and the solution is allowed to flow over a surface to be measured. The fluorescent intensity distribution of multiple colors corresponding to the concentration distribution of the individual fluorescent dyes is produced by exciting the surface to be measured using an evanescent wave. The ratio of the fluorescent intensities of the multiple colors is calculated by measuring the fluorescent intensity at the surface to be measured using a two-dimensional imaging element that can be obtained by separating the intensities of the multiple fluorescent colors by color, and the ratio is converted into the two-dimensional distribution of zeta potential, pH or temperature at the wall surface using a relational expression, which has been formulated beforehand, between the ratio of the fluorescent intensities and the zeta potential, pH or temperature at the wall surface. Thus, surface modification or the two [NON-BREAKING HYPHEN] dimensional distribution of zeta potential, pH or temperature at the wall surface can be visualized in real time, and can also be evaluated quantitatively.
  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • Keio University
  • Inventor
  • SATO, Yohei
  • KAZOE, Yutaka
  • MIYAKAWA, Shu
IPC(International Patent Classification)
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