|Título||Optically monitored dip coating as a contactless viscometry method for liquid films
Michels, Alexandre Fassini
|Abstract||Real-time interferometric monitoring of the dip coating process is applied to the study of properties of flowing liquids. Nonvolatile Newtonian oils are considered, allowing validity of a simple model after the steady state is reached where film physical thickness depends on time as t 1 2. Measurement of two distinct mineral oil standards, under several withdrawing speeds, resulted in kinematic viscosities of 1.17 0.03 and 9.9 0.2 S 1S 1 cm2 s . Agreement of these results with nominal values from the manufacturer suggests that interferometric monitoring of dip coating may become a valuable method for accurate, contactless viscometry of liquid films. Advantages and present limitations are discussed.
|Contido em||Applied optics (2004). Washington, DC. Vol. 44, no. 6 (Feb. 2005), p. 912-915
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|Tipo||Artigo de periódico
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