Electrowetting-based microdrop tensiometer

A.G. Banpurkar; K.P.F. Nichols; F.G. Mugele

doi:10.1021/la801549p

Electrowetting-based microdrop tensiometer

A.G. Banpurkar
, K.P.F. Nichols
, F.G. Mugele

Research output: Contribution to journal › Article › Academic › peer-review

65 Citations (Scopus)

146 Downloads (Pure)

Abstract

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/m2, 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.

Original language	English
Pages (from-to)	10549-10551
Number of pages	3
Journal	Langmuir
Volume	24
Issue number	19
DOIs	https://doi.org/10.1021/la801549p
Publication status	Published - 2008

Keywords

2024 OA procedure

Access to Document

10.1021/la801549p

ArticleFinal published version, 411 KBLicence: Taverne

Cite this

@article{5338d02483a043d0953b9c926cd01d11,

title = "Electrowetting-based microdrop tensiometer",

abstract = "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/m2, 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.",

keywords = "2024 OA procedure",

author = "A.G. Banpurkar and K.P.F. Nichols and F.G. Mugele",

year = "2008",

doi = "10.1021/la801549p",

language = "English",

volume = "24",

pages = "10549--10551",

journal = "Langmuir",

issn = "0743-7463",

publisher = "American Chemical Society",

number = "19",

}

TY - JOUR

T1 - Electrowetting-based microdrop tensiometer

AU - Banpurkar, A.G.

AU - Nichols, K.P.F.

AU - Mugele, F.G.

PY - 2008

Y1 - 2008

N2 - 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/m2, 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.

AB - 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/m2, 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.

KW - 2024 OA procedure

U2 - 10.1021/la801549p

DO - 10.1021/la801549p

M3 - Article

SN - 0743-7463

VL - 24

SP - 10549

EP - 10551

JO - Langmuir

JF - Langmuir

IS - 19

ER -

Electrowetting-based microdrop tensiometer

Abstract

Keywords

Access to Document

Fingerprint

Cite this