Miniaturized optical viscosity sensor based on a laser-induced capillary wave

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A novel micro optical viscosity sensor (MOVS), using the laser-induced capillary wave method, enabling non-contact, short-time (within several hundreds of nanoseconds), and small sample volume (within several tens of microliters) in situ/in vivo measurement, is reported in this paper. The microfabricated MOVS chip consists of two deep trenches holding the photonic crystal fibers for the excitation laser, and two shallow trenches holding the lensed fibers for the probing laser. The optical interference fringe excited by two pulsed laser beams heats the sample surface, and the temporal behavior of the surface geometry is detected as a first-order diffracted beam, which contains information about the liquid properties (viscosity and surface tension). Preliminary measurements using distilled water and sulfuric acid with carbon black dye are demonstrated. The high-speed damped oscillation signals are successfully detected by the MOVS.

Original languageEnglish
Article number044008
JournalJournal of Optics A: Pure and Applied Optics
Volume10
Issue number4
DOIs
Publication statusPublished - 2008 Apr 1

Fingerprint

capillary waves
Viscosity
viscosity
Lasers
sensors
Sensors
lasers
Soot
Light interference
surface geometry
Laser excitation
fibers
Photonic crystal fibers
sulfuric acid
Carbon black
Pulsed lasers
Sulfuric acid
Laser beams
Surface tension
pulsed lasers

Keywords

  • Laser-induced capillary wave
  • Optical interference
  • Optical viscometer chip
  • Surface tension
  • Viscosity

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Miniaturized optical viscosity sensor based on a laser-induced capillary wave. / Taguchi, Yoshihiro; Ebisui, A.; Nagasaka, Yuji.

In: Journal of Optics A: Pure and Applied Optics, Vol. 10, No. 4, 044008, 01.04.2008.

Research output: Contribution to journalArticle

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