Electrowetting-based microdrop tensiometer

被引：59
作者：
Banpurkar, Arun G. [1 ,2 ,3 ]
Nichols, Kevin P. [1 ,2 ]
Mugele, Frieder [1 ,2 ]
机构：
[1] Univ Twente, MESA Inst Nanotechnol, NL-7500 AE Enschede, Netherlands
[2] Univ Twente, IMPACT, NL-7500 AE Enschede, Netherlands
[3] Univ Pune, Ctr Adv Studies Mat Sci & Condensed Matter Phys, Dept Phys, Pune 411007, Maharashtra, India
来源：
LANGMUIR | 2008年 / 24卷 / 19期
关键词：
D O I：
10.1021/la801549p
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We performed electrowetting (EW) contact angle measurements to determine the interfacial tension between aqueous drops laden with various inorganic and organic solutes and various ambient oils. Using low frequency AC voltage, we obtained interfacial tensions from 5 to 72 mJ/m(2), in close agreement with macroscopic tensiometry for drop volumes between 20 and 2000 nL. In addition to the conventional EW geometry, we demonstrate the possibility of performing "contact-less" measurements without any loss of accuracy using interdigitated coplanar electrodes.
引用
收藏
页码：10549 / 10551
页数：3
相关论文
共 14 条
  • [1] Low voltage electrowetting using thin fluoroploymer films
    Berry, Shaun
    Kedzierski, Jakub
    Abedian, Behrouz
    [J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2006, 303 (02) : 517 - 524
  • [2] Wetting morphologies on substrates with striped surface domains
    Brinkmann, M
    Lipowsky, R
    [J]. JOURNAL OF APPLIED PHYSICS, 2002, 92 (08) : 4296 - 4306
  • [3] Digital microfluidics: is a true lab-on-a-chip possible?
    Fair, R. B.
    [J]. MICROFLUIDICS AND NANOFLUIDICS, 2007, 3 (03) : 245 - 281
  • [4] Microfluidic interfacial tensiometry
    Hudson, SD
    Cabral, JT
    Goodrum, WJ
    Beers, KL
    Amis, EJ
    [J]. APPLIED PHYSICS LETTERS, 2005, 87 (08)
  • [5] Measurements of surface tension of organic solvents using a simple microfabricated chip
    Liu, Jiangjiang
    Li, Haifang
    Lin, Jin-Ming
    [J]. ANALYTICAL CHEMISTRY, 2007, 79 (01) : 371 - 377
  • [6] Lyklema J., 2000, Fundamentals of Interface and Colloid Science: Volume III Liquid Fluid Interfaces, VIII
  • [7] Electrowetting: From basics to applications
    Mugele, F
    Baret, JC
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2005, 17 (28) : R705 - R774
  • [8] Microfluidic sensor for dynamic surface tension measurement
    Nguyen, N. -T.
    Lassemono, S.
    Chollet, F. A.
    Yang, C.
    [J]. IEE PROCEEDINGS-NANOBIOTECHNOLOGY, 2006, 153 (04): : 102 - 106
  • [9] On the influence of surfactants in electrowetting systems
    Raccurt, Olivier
    Berthier, Jean
    Clementz, Philippe
    Borella, Mathias
    Plissonnier, Marc
    [J]. JOURNAL OF MICROMECHANICS AND MICROENGINEERING, 2007, 17 (11) : 2217 - 2223
  • [10] Amorphous fluoropolymers as insulators for reversible low-voltage electrowetting
    Seyrat, E
    Hayes, RA
    [J]. JOURNAL OF APPLIED PHYSICS, 2001, 90 (03) : 1383 - 1386
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