Shadow Doppler technique for sizing particles of arbitrary shape

Y. Hardalupas, Koichi Hishida, M. Maeda, H. Morikita, A. M K P Taylor, J. H. Whitelaw

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

An instrument for the simultaneous measurement of the velocity and the size of arbitrary-shaped particles was described. The new aspect of this instrument was that the size of the particles was obtained from the temporal output from elements of a linear diode array positioned at the focal plane of the collection optics of a laser Doppler velocimeter to record the shadow of the passage of the particle. The measurement principle was described. In addition, the results of an appraisal of the size measurement accuracy as a function of the particle defocus position, the threshold levels employed to identify the particle shadow, and the particle trajectory for opaque and transparent media and spherical and nonspherical shapes and for diameters between 30 and 140 μm were presented.

Original languageEnglish
Pages (from-to)8417-8426
Number of pages10
JournalApplied Optics
Volume33
Issue number36
Publication statusPublished - 1994 Jan 1

Fingerprint

sizing
Laser Doppler velocimeters
Optics
Diodes
laser doppler velocimeters
Trajectories
particle trajectories
diodes
optics
thresholds
output

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Hardalupas, Y., Hishida, K., Maeda, M., Morikita, H., Taylor, A. M. K. P., & Whitelaw, J. H. (1994). Shadow Doppler technique for sizing particles of arbitrary shape. Applied Optics, 33(36), 8417-8426.

Shadow Doppler technique for sizing particles of arbitrary shape. / Hardalupas, Y.; Hishida, Koichi; Maeda, M.; Morikita, H.; Taylor, A. M K P; Whitelaw, J. H.

In: Applied Optics, Vol. 33, No. 36, 01.01.1994, p. 8417-8426.

Research output: Contribution to journalArticle

Hardalupas, Y, Hishida, K, Maeda, M, Morikita, H, Taylor, AMKP & Whitelaw, JH 1994, 'Shadow Doppler technique for sizing particles of arbitrary shape', Applied Optics, vol. 33, no. 36, pp. 8417-8426.
Hardalupas Y, Hishida K, Maeda M, Morikita H, Taylor AMKP, Whitelaw JH. Shadow Doppler technique for sizing particles of arbitrary shape. Applied Optics. 1994 Jan 1;33(36):8417-8426.
Hardalupas, Y. ; Hishida, Koichi ; Maeda, M. ; Morikita, H. ; Taylor, A. M K P ; Whitelaw, J. H. / Shadow Doppler technique for sizing particles of arbitrary shape. In: Applied Optics. 1994 ; Vol. 33, No. 36. pp. 8417-8426.
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