Control of particle alignment in water by an alternating electric field

Masahiko Abe, Atsushi Yamamoto, Masanori Orita, Takahiro Ohkubo, Hideki Sakai, Nobuyuki Momozawa

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

We attempted to align a large number of silica particles dispersed in aqueous solution by controlling the alternating electric field between the two electrodes (400 μm apart). Relatively large particles (9.9 μm) were found to align forming strings in the direction parallel to the electric field while relatively small particles (2.0 and 4.9 μm) were observed to align making stripes in the direction perpendicular to the field. The number of stripes formed by particles between the electrodes increased with increasing frequency of the alternating field. This peculiar perpendicular particle alignment appeared when the contribution to particle alignment of electroosmotic flow exceeded that of dielectric polarization and the osmotic flow was found to be stronger around the particles than in the vicinity of the electrode surface.

Original languageEnglish
Pages (from-to)7021-7026
Number of pages6
JournalLangmuir
Volume20
Issue number17
DOIs
Publication statusPublished - Aug 17 2004
Externally publishedYes

Fingerprint

alignment
Electric fields
Electrodes
electric fields
Water
water
Silicon Dioxide
electrodes
Silica
Polarization
dielectric polarization
strings
silicon dioxide
aqueous solutions
Direction compound

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

Abe, M., Yamamoto, A., Orita, M., Ohkubo, T., Sakai, H., & Momozawa, N. (2004). Control of particle alignment in water by an alternating electric field. Langmuir, 20(17), 7021-7026. https://doi.org/10.1021/la0490801

Control of particle alignment in water by an alternating electric field. / Abe, Masahiko; Yamamoto, Atsushi; Orita, Masanori; Ohkubo, Takahiro; Sakai, Hideki; Momozawa, Nobuyuki.

In: Langmuir, Vol. 20, No. 17, 17.08.2004, p. 7021-7026.

Research output: Contribution to journalArticle

Abe, M, Yamamoto, A, Orita, M, Ohkubo, T, Sakai, H & Momozawa, N 2004, 'Control of particle alignment in water by an alternating electric field', Langmuir, vol. 20, no. 17, pp. 7021-7026. https://doi.org/10.1021/la0490801
Abe M, Yamamoto A, Orita M, Ohkubo T, Sakai H, Momozawa N. Control of particle alignment in water by an alternating electric field. Langmuir. 2004 Aug 17;20(17):7021-7026. https://doi.org/10.1021/la0490801
Abe, Masahiko ; Yamamoto, Atsushi ; Orita, Masanori ; Ohkubo, Takahiro ; Sakai, Hideki ; Momozawa, Nobuyuki. / Control of particle alignment in water by an alternating electric field. In: Langmuir. 2004 ; Vol. 20, No. 17. pp. 7021-7026.
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