Wettability characterization method based on optical coherence tomography imaging

被引：12

作者：

Fabritius, Tapio ^{[1
]}

Myllyla, Risto ^{[1
]}

Makita, Shuichi ^{[2
]}

Yasuno, Yoshiaki ^{[2
]}

机构：

[1] Univ Oulu, Optoelect & Measurement Tech Lab, Oulu, Finland

[2] Univ Tsukuba, Computat Opt Grp, Tsukuba, Ibaraki, Japan

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 22期

基金：

日本科学技术振兴机构;

关键词：

POROUS-MEDIA; BEHAVIOR; CASSIE; WENZEL;

D O I：

10.1364/OE.18.022859

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel method for surface wetting characterization based on contact angle measurements is presented. Three dimensional structural imaging of a droplet on a substrate is performed using optical coherence tomography (OCT) which provides micrometer resolution images without contact with the sample. An automatic OCT intensity variation based, layer segmentation method was implemented to identify air-droplet, droplet-substrate and air-substrate interfaces. A glycerol droplet on a rough tilted glass substrate was used as a test sample to demonstrate the applicability of the proposed method for wetting characterization. Results show that the contact angle of any observation angle can be obtained. In addition, the droplet's average refractive index can be determined. The proposed method is an interesting and complementary tool for present wetting characterization methods. (C) 2010 Optical Society of America

引用

页码：22859 / 22866

页数：8

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