Resolution of cross-type optical particle separation

A real-time, continuous optical particle separation method, termed cross-type optical particle separation, is investigated theoretically and experimentally. The trajectory of a particle subject to cross-type optical particle separation is predicted by solving the particle dynamic equation and compared with experimental data. For various flow velocities and particle sizes, the retention distances are measured where the displacement perpendicular to the fluid flow direction is referred to as the retention distance. The measured retention distances are in good agreement with theoretical predictions. The retention distance increases as the particle size increases due to the radiation force, but decreases as the flow velocity increases since the residence time of a particle in the laser beam decreases with increasing flow velocity. To evaluate the performance of the cross-type optical particle separation method, size-based separation resolution is derived theoretically in terms of the refractive index of the particle and instrumental fluctuations. Furthermore, an expression for the maximum resolution is derived.
Publisher
AMER CHEMICAL SOC
Issue Date
2008-08
Language
ENG
Keywords

TOTAL ANALYSIS SYSTEMS; LASER-BEAMS; CHROMATOGRAPHY; MICROCHANNEL; SPHERES; REGIME; FORCES; SINGLE; CELLS; TRAP

Citation

ANALYTICAL CHEMISTRY, v.80, no.15, pp.6023 - 6028

ISSN
0003-2700
DOI
10.1021/ac800740b
URI
http://hdl.handle.net/10203/10183
Appears in Collection
ME-Journal Papers(저널논문)
Files in This Item
000258096700054.pdf(216.21 kB)Download
  • Hit : 136
  • Download : 161
  • Cited 0 times in thomson ci
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡClick to seewebofscience_button
⊙ Cited 10 items in WoSClick to see citing articles inrecords_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0