Phase-retrieval method for measuring small contact angles of pentane on water

被引：0
作者：
Feldman, S. [1 ]
Raz, E. [2 ]
Lipson, S. G. [1 ,2 ]
机构：
[1] Technion, Phys Dept, IL-3200003 Haifa, Israel
[2] ORT Braude Coll, Dept Phys & Opt Engn, IL-2161002 Karmiel, Israel
来源：
APPLIED OPTICS | 2019年 / 58卷 / 31期
关键词：
DROPLETS;
D O I：
10.1364/AO.58.008577
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Pentane drops on a water surface are predicted to have contact angles of the order of 1 degree or less in the phase of frustrated complete wetting. We have developed an optical method of measuring such small contact angles, applicable to cases where the refractive indices of the substrate and adsorbate are very similar and the fluid dynamics do not allow delay between image acquisitions, by using phase retrieval to map the surface profile of the drops. It is empirically shown that, with our method, a difference of nanometer order can be achieved for the phase-retrieved dimensions relative to their expected value. Results agree with numerical predictions by Weiss and Widom [Physica A 292, 137 (2001)]. (C) 2019 Optical Society of America
引用
收藏
页码：8577 / 8582
页数：6
相关论文
共 19 条
[1]   Quantitative optical phase microscopy [J].
Barty, A ;
Nugent, KA ;
Paganin, D ;
Roberts, A .
OPTICS LETTERS, 1998, 23 (11) :817-819
[2]   First-order and critical wetting of alkanes on water [J].
Bertrand, E ;
Dobbs, H ;
Broseta, D ;
Indekeu, J ;
Bonn, D ;
Meunier, J .
PHYSICAL REVIEW LETTERS, 2000, 85 (06) :1282-1285
[3]   Complex wetting phenomena in liquid mixtures: frustrated-complete wetting and competing intermolecular forces [J].
Bonn, D ;
Bertrand, E ;
Shahidzadeh, N ;
Ragil, K ;
Dobbs, HT ;
Posazhennikova, AI ;
Broseta, D ;
Meunier, J ;
Indekeu, JO .
JOURNAL OF PHYSICS-CONDENSED MATTER, 2001, 13 (21) :4903-4914
[4]   PHASE RETRIEVAL ALGORITHMS - A COMPARISON [J].
FIENUP, JR .
APPLIED OPTICS, 1982, 21 (15) :2758-2769
[5]  
GERCHBERG RW, 1972, OPTIK, V35, P237
[6]  
Lipson AS. G Lipson H Lipson., 2011, Optical physics, V4
[7]  
Misell D. L., 1973, Journal of Physics D (Applied Physics), V6, pL6, DOI 10.1088/0022-3727/6/1/102
[8]   Quantitative phase imaging using hard x rays [J].
Nugent, KA ;
Gureyev, TE ;
Cookson, DF ;
Paganin, D ;
Barnea, Z .
PHYSICAL REVIEW LETTERS, 1996, 77 (14) :2961-2964
[9]   Long-range critical wetting:: Observation of a critical end point -: art. no. 245701 [J].
Rafaï, S ;
Bonn, D ;
Bertrand, E ;
Meunier, J ;
Weiss, VC ;
Indekeu, JO .
PHYSICAL REVIEW LETTERS, 2004, 92 (24) :245701-1
[10]   CURVATURE SENSING AND COMPENSATION - A NEW CONCEPT IN ADAPTIVE OPTICS [J].
RODDIER, F .
APPLIED OPTICS, 1988, 27 (07) :1223-1225
12