Sub-micrometer precision of optical imaging to locate the free surface of a micrometer fluid shape

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:339

Article

Montanero, J. M.²  Vega, E. J.²  Ferrera, C.¹ 

[1] Univ Seville, Dept Aerosp Engn & Fluid Mech, E-41092 Seville, Spain

[2] Univ Extremadura, Dept Mech Energet & Mat Engn, E-06071 Badajoz, Spain

关键词: Free surface;    Image analysis;    Optical imaging;    Liquid film;   

DOI  :  10.1016/j.jcis.2009.07.051

来源: Elsevier

【 摘 要 】

In this note, we explore the precision of the optical imaging method for measuring the free surface position of a micrometer fluid shape. For this purpose, images of a liquid film deposited on a rod were acquired and processed. The resulting contour was compared with the corresponding solution to the Young-Laplace equation. The average deviation was about 30 nm, 25 times smaller than the pixel size, reflecting the validity of optical imaging for most applications in microfluidics. (C) 2009 Elsevier Inc. All rights reserved.

【 授权许可】

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