中国物理B ›› 2024, Vol. 33 ›› Issue (9): 90701-090701.doi: 10.1088/1674-1056/ad597e

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

Lihua Yan(闫丽华)1, Boyin Xue(薛博引)1, Yuanji Li(李渊骥)1,2,‡, Jinxia Feng(冯晋霞)1,2, Xingkang Wu(武兴康)3, and Kuanshou Zhang(张宽收)1,2,†   

  1. 1 State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China;
    2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China;
    3 Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan 030006, China
  • 收稿日期:2024-05-08 修回日期:2024-06-15 接受日期:2024-06-19 发布日期:2024-08-15
  • 通讯作者: Kuanshou Zhang, Yuanji Li E-mail:kuanshou@sxu.edu.cn;liyuanji@sxu.edu.cn
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (Grant No. 62175135), the Special Foundation of Local Scientific and Technological Development Guided by Central Government (Grant No. YDZJSX20231A006), and the Fundamental Research Program of Shanxi Province (Grant No. 202103021224025).

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

Lihua Yan(闫丽华)1, Boyin Xue(薛博引)1, Yuanji Li(李渊骥)1,2,‡, Jinxia Feng(冯晋霞)1,2, Xingkang Wu(武兴康)3, and Kuanshou Zhang(张宽收)1,2,†   

  1. 1 State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China;
    2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China;
    3 Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan 030006, China
  • Received:2024-05-08 Revised:2024-06-15 Accepted:2024-06-19 Published:2024-08-15
  • Contact: Kuanshou Zhang, Yuanji Li E-mail:kuanshou@sxu.edu.cn;liyuanji@sxu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Grant No. 62175135), the Special Foundation of Local Scientific and Technological Development Guided by Central Government (Grant No. YDZJSX20231A006), and the Fundamental Research Program of Shanxi Province (Grant No. 202103021224025).

摘要: 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.

关键词: liquid viscosity, optical tweezers, dual-frequency-band particle tracking, power spectral density

Abstract: 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.

Key words: liquid viscosity, optical tweezers, dual-frequency-band particle tracking, power spectral density

中图分类号:  (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)

  • 07.07.Df
42.79.Pw (Imaging detectors and sensors)