Optical Chromatography

Totaro Imasaka, Yuji Kawabata, Takashi Kaneta, Yasunori Ishidzu

Research output: Contribution to journalArticlepeer-review

127 Citations (Scopus)


A new and potentially useful method for separation of particles by optical radiation pressure is described and demonstrated in this study. A laser beam is focused into the solution, which contains particles counterflowing coaxially in a capillary. The particle is focused into the center line of the laser beam by radiation pressure. The particle is turned around, accelerated, passed through a beam waist, decelerated by a liquid flow, and drifts, at which point the radiation pressure is identical to the force induced by the liquid flow, resulting in separation of particles as a function of size.

Original languageEnglish
Pages (from-to)1763-1765
Number of pages3
JournalAnalytical Chemistry
Issue number11
Publication statusPublished - 1995
Externally publishedYes

ASJC Scopus subject areas

  • Analytical Chemistry


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