Approach to the determination of the contact angle in hydrophobic samples with simultaneous correction of the effect of the roughness

Noemí Domínguez; Pau Castilla; María Eugenia Linzoain; Géraldine Durand; Cristina García; Josep Arasa

doi:10.1117/1.OE.57.4.044102

12 April 2018 Approach to the determination of the contact angle in hydrophobic samples with simultaneous correction of the effect of the roughness

Noemí Domínguez, Pau Castilla, María Eugenia Linzoain, Géraldine Durand, Cristina García, Josep Arasa

Author Affiliations +

Optical Engineering, Vol. 57, Issue 4, 044102 (April 2018). https://doi.org/10.1117/1.OE.57.4.044102

Abstract

This work presents the validation study of a method developed to measure contact angles with a confocal device in a set of hydrophobic samples. The use of this device allows the evaluation of the roughness of the surface and the determination of the contact angle in the same area of the sample. Furthermore, a theoretical evaluation of the impact of the roughness of a nonsmooth surface in the calculation of the contact angle when it is not taken into account according to Wenzel’s model is also presented.

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Noemí Domínguez, Pau Castilla, María Eugenia Linzoain, Géraldine Durand, Cristina García, and Josep Arasa "Approach to the determination of the contact angle in hydrophobic samples with simultaneous correction of the effect of the roughness," Optical Engineering 57(4), 044102 (12 April 2018). https://doi.org/10.1117/1.OE.57.4.044102

Received: 4 January 2018; Accepted: 23 March 2018; Published: 12 April 2018

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