Determination of liquid viscosity based on dual-frequency-band particle tracking

An optical-tweezers-based dual-frequency-band particle tracking system was designed and fabricated for liquid viscosity detection. On the basis of the liquid viscosity dependent model of the particle’s restricted Brownian motion with the Faxén correction taken into account, the liquid viscosity and...

Full description

Saved in:
Bibliographic Details
Published in:Chinese physics B 2024-08, Vol.33 (9), p.90701
Main Authors: Yan, Lihua, Xue, Boyin, Li, Yuanji, Feng, Jinxia, Wu, Xingkang, Zhang, Kuanshou
Format: Article
Language:English
Subjects:
dual-frequency-band particle tracking
liquid viscosity
optical tweezers
power spectral density
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An optical-tweezers-based dual-frequency-band particle tracking system was designed and fabricated for liquid viscosity detection. On the basis of the liquid viscosity dependent model of the particle’s restricted Brownian motion with the Faxén correction taken into account, the liquid viscosity and optical trap stiffness were determined by fitting the theoretical prediction with the measured power spectral densities of the particle’s displacement and velocity that were derived from the dual-frequency-band particle tracking data. When the SiO 2 beads were employed as probe particles in the measurements of different kinds of liquids, the measurement results exhibit a good agreement with the reported results, as well as a detection uncertainty better than 4.6%. This kind of noninvasive economical technique can be applied in diverse environments for both in situ and ex situ viscosity detection of liquids.
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/ad597e