OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 34, Iss. 19 — Jul. 1, 1995
  • pp: 3777–3785

Evanescent-wave scattering by electrophoretic microparticles: a mechanism for optical switching

J. T. Remillard, J. M. Ginder, and W. H. Weber  »View Author Affiliations


Applied Optics, Vol. 34, Issue 19, pp. 3777-3785 (1995)
http://dx.doi.org/10.1364/AO.34.003777


View Full Text Article

Enhanced HTML    Acrobat PDF (267 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

The total internal reflection of light occurring at the interface between glass and a low-index liquid containing suspended microparticles can be electrically controlled. The particles are charged and the glass is coated with a thin, transparent conductor. When the conductor is biased to attract the particles, they scatter and absorb light from the evanescent optical field near the interface, thus reducing the reflectivity. When the conductor is biased to repel the particles, total internal reflection is achieved. Experimental results are given for the time, voltage, and angle-of-incidence dependence of the reflectivity at the interface between an In–Sn–oxide-coated glass surface and a suspension of 0.47-μm-diameter silica particles in acetonitrile. The switching is found to be fast (∼100 ms) and reproducible. In certain conditions the on/off ratio for a single reflection can be as large as 2:1. A simple theoretical model is developed to interpret these experiments. The model gives a reasonable fit to the data and allows one to extract information such as the particle mobility and the particle density in the evanescent-wave region.

© 1995 Optical Society of America

History
Original Manuscript: September 29, 1994
Revised Manuscript: November 14, 1994
Published: July 1, 1995

Citation
J. T. Remillard, J. M. Ginder, and W. H. Weber, "Evanescent-wave scattering by electrophoretic microparticles: a mechanism for optical switching," Appl. Opt. 34, 3777-3785 (1995)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-34-19-3777


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. D. C. Prieve, N. A. Frej, “Total internal reflection microscopy: a quantitative tool for the measurement of colloidal forces,” Langmuir 6, 396–403 (1990). [CrossRef]
  2. G. A. Schumacher, T. G. M. van de Ven, “Evanescent wave scattering studies on latex–glass interactions,” Langmuir 7, 2028–2033 (1991). [CrossRef]
  3. B. Pouligny, D. J. W. Aastuen, N.A. Clark, “Total-internal-reflection study of a colloidal-crystal–container-wall interface,” Phys. Rev. A 44, 6616–6625 (1991). [CrossRef] [PubMed]
  4. M. A. Brown, A. L. Smith, E. J. Staples, “A method using total internal reflection microscopy and radiation pressure to study weak interaction forces of particles near surfaces,” Langmuir 5, 1319–1324 (1989). [CrossRef]
  5. W. J. Albery, R. A. Fredlein, G. J. O'Shea, A. L. Smith, “Colloidal deposition under conditions of controlled potential,” Faraday Discuss. Chem. Soc. 90, 223–234 (1990). [CrossRef]
  6. S. G. Flicker, J. L. Tipa, S. G. Bike, “Quantifying double-layer repulsion between a colloidal sphere and a glass plate using total internal reflection microscopy,” J. Colloid Interface Sci. 158, 317–325 (1993). [CrossRef]
  7. N. J. Harrick, Internal Reflection Spectroscopy (Wiley, New York, 1967), pp. 27–30;J. Gao, S. Rice, “Light scattering with incident evanescent waves: a method for studying the properties of adsorbed polymers,” J. Chem Phys. 90, 3469–3478 (1989). [CrossRef]
  8. A. L. Dalisa, “Electrophoretic display technology,” IEEE Trans. Electron. Devices ED-24, 827–834 (1977). [CrossRef]
  9. See, e.g., T. Bellini, R. Piazza, C. Sozzi, V. DeGiorgio, “Electric birefringence of a dispersion of electrically charged anisotropic particles,” Europhys. Lett. 7, 561–565 (1988). [CrossRef]
  10. H. C. van de Hulst, Light Scattering by Small Particles (Dover, New York, 1981), p. 91.
  11. See, e.g., B. Chu, Laser Light Scattering (Academic, San Diego, Calif., 1991), p. 63ff.
  12. Ref. 11, pp. 247–249.
  13. E. E. Uzgiris, “Laser Doppler spectrometer for study of electrokinetic phenomena,” Rev. Sci. Instrum. 45, 74–80 (1974). [CrossRef] [PubMed]
  14. R. J. Hunter, Foundations of Colloid Science (Oxford, London, 1986), Vol. 1, p. 559.
  15. Ref. 14, p. 390.
  16. V. Novotny, “Particle charges and particle-substrate forces by optical transients,” J. Appl. Phys. 50, 324–332 (1979). [CrossRef]
  17. D. C. Prieve, J. Y. Walz, “Scattering of an evanescent surface wave by a microscopic dielectric sphere,” Appl. Opt. 32, 1629–1641 (1993). [CrossRef] [PubMed]
  18. W. H. Weber, J. T. Remillard, J. M. Ginder, “Electrophoretic switch for a light pipe,” U.S. patent5,317,667 (31May1994).
  19. R. M. Glen, “Polymeric optical fiber,” Chemtronics 1, 98–106 (1986).
  20. J. Dugas, M. Sotom, L. Martin, J.-M. Cariou, “Accurate characterization of the transmittivity of large-diameter multimode optical fibers,” Appl. Opt. 26, 4198–4208 (1987). [CrossRef] [PubMed]
  21. C. Emslie, “Polymer optical fibers,” J. Mater. Sci. 23, 2281–2293 (1988). [CrossRef]
  22. J. T. Remillard, M. P. Everson, W. H. Weber, “Loss mechanisms in optical light pipe,” Appl. Opt. 31, 7232–7241 (1992). [CrossRef] [PubMed]
  23. J. Dugas, G. Maurel, “Mode-coupling processes in polymethyl methacrylate-core optical fibers,” Appl. Opt. 31, 5069–5079 (1992). [CrossRef] [PubMed]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited