Optical tweezers-assisted cross-correlation analysis for a non-intrusive fluid temperature measurement in microdomains

Chih Ming Cheng, Ming Chih Chang, Yu Fen Chang, Wei Ting Wang, Chien Ting Hsu, Jing Shin Tsai, Chia Yeh Liu, Chien Ming Wu, Keng Liang Ou, Tzu Sen Yang

研究成果: 雜誌貢獻文章同行評審

3 引文 斯高帕斯(Scopus)

摘要

An image-based approach to predict the fluid temperature in microfluidic flow cell is presented. We apply Fourier-based cross-correlation processing to determine the lateral displacement of the optically trapped bead; therefore, both the mean square displacement (MSD) and the diffusion coefficient (D) can be obtained. On the other hand, applying the Stokes-Einstein equation, together with Faxen's law correction, the theoretical relation showed that D is proportional to (T=η), where T and η are temperature and temperature-dependent fluid viscosity, respectively. Hence, the fluid temperature can be determined by MSD-based thermometry.

原文英語
文章編號067002
期刊Japanese Journal of Applied Physics
51
發行號6 PART 1
DOIs
出版狀態已發佈 - 六月 2012

ASJC Scopus subject areas

  • 工程 (全部)
  • 物理與天文學 (全部)

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