Loughborough University
Leicestershire, UK
LE11 3TU
+44 (0)1509 263171
Loughborough University

Loughborough University Institutional Repository

Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/23144

Title: Mechanical characterization of ultralow interfacial tension oil-in-water droplets by thermal capillary wave analysis in a microfluidic device
Authors: Bolognesi, Guido
Saito, Yuki
Tyler, Arwen I.I.
Ward, Andrew D.
Bain, Colin D.
Ces, Oscar
Issue Date: 2016
Publisher: © American Chemical Society
Citation: BOLOGNESI, G. ...et al., 2016. Mechanical characterization of ultralow interfacial tension oil-in-water droplets by thermal capillary wave analysis in a microfluidic device. Langmuir, 32(15), pp. 3580-3586.
Abstract: © 2016 American Chemical Society.Measurements of the ultralow interfacial tension and surfactant film bending rigidity for micron-sized heptane droplets in bis(2-ethylhexyl) sodium sulfosuccinate-NaCl aqueous solutions were performed in a microfluidic device through the analysis of thermally driven droplet interface fluctuations. The Fourier spectrum of the stochastic droplet interface displacement was measured through bright-field video microscopy and a contour analysis technique. The droplet interfacial tension, together with the surfactant film bending rigidity, was obtained by fitting the experimental results to the prediction of a capillary wave model. Compared to existing methods for ultralow interfacial tension measurements, this contactless, nondestructive, all-optical approach has several advantages, such as fast measurement, easy implementation, cost-effectiveness, reduced amount of liquids, and integration into lab-on-a-chip devices.
Description: This is an Open Access Article. It is published by the American Chemical Society.
Sponsor: This work was supported by EPSRC grants EP/I0133 42/1 and EP/G00465X/1.
Version: Published
DOI: 10.1021/acs.langmuir.5b04702
URI: https://dspace.lboro.ac.uk/2134/23144
Publisher Link: http://dx.doi.org/10.1021/acs.langmuir.5b04702
ISSN: 0743-7463
Appears in Collections:Published Articles (Chemical Engineering)

Files associated with this item:

File Description SizeFormat
Bolognesi_acs.langmuir.5b04702.pdfPublished version982.41 kBAdobe PDFView/Open

 

SFX Query

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.