Large area optical mapping of surface contact angle

被引：21

作者：

Dutra, Guilherme ^{[1
]}

Canning, John ^{[1
,2
,3
,4
]}

Padden, Whayne ^{[2
,3
]}

Martelli, Cicero ^{[1
,5
]}

Dligatch, Svetlana ^{[6
]}

机构：

[1] Univ Tecnol Fed Parana, Grad Sch Elect Engn & Appl Comp Sci, BR-80230901 Curitiba, Parana, Brazil

[2] Univ Technol, iPL, Sch Elect & Data Engn, Sydney, NSW 2007, Australia

[3] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia

[4] Australian Sensor & Identificat Syst, Sydney, NSW 2000, Australia

[5] Univ Tecnol Fed Parana, Dept Elect, BR-80230901 Curitiba, Parana, Brazil

[6] CSIRO Mfg, POB 218, Lindfield, NSW 2070, Australia

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 18期

基金：

澳大利亚研究理事会;

关键词：

POLYMER SURFACES; GAS WETTABILITY; SMARTPHONE; WATER; FLUORESCENCE; TRANSPARENT; DEPOSITION; RECOVERY; TENSION;

D O I：

10.1364/OE.25.021127

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Top-down contact angle measurements have been validated and confirmed to be as good if not more reliable than side-based measurements. A range of samples, including industrially relevant materials for roofing and printing, has been compared. Using the topdown approach, mapping in both 1-D and 2-D has been demonstrated. The method was applied to study the change in contact angle as a function of change in silver ( Ag) nanoparticle size controlled by thermal evaporation. Large area mapping reveals good uniformity for commercial Aspen paper coated with black laser printer ink. A demonstration of the forensic and chemical analysis potential in 2-D is shown by uncovering the hidden CsF initials made with mineral oil on the coated Aspen paper. The method promises to revolutionize nanoscale characterization and industrial monitoring as well as chemical analyses by allowing rapid contact angle measurements over large areas or large numbers of samples in ways and times that have not been possible before. (C) 2017 Optical Society of America

引用

页码：21127 / 21144

页数：18

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