On two direct methods for measurement of interfacial tension at microdroplet surfaces

Details On two direct methods for measurement of interfacial tension at microdroplet surfaces On two direct methods for measurement of interfacial tension at microdroplet surfaces

2004-11-12

arxiv.org/abs/cond-mat/0411341v1

Physics

Condensed Matter

Soft Condensed Matter

3 pages

Scientific paper

In the presence of surfactants, the interfacial tension (IFT) of microscopic droplets differs significantly from IFT of macroscopic drops for the same surfactant solutions. As a result, IFT between two immiscible liquids can strongly depend on the experimental design. In the present work a simple theoretical description of two possible techniques for measurement of IFT at microdroplet surfaces is proposed: the spinning drop and the micropipette methods. We take into account that for microdroplets the IFT can be not the unique parameter determining the surface elastic energy. The previous interpretation of the experiments is generalized within the Helfrich's concept of interfacial elasticity. Simple equations are obtained that could be used to test the Helfrich's theory and in the direct determination, in addition to IFT, of such characteristics of the interface as the bending rigidity and spontaneous curvature.

Affiliated with

Also associated with

No associations

Rating

On two direct methods for measurement of interfacial tension at microdroplet surfaces does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On two direct methods for measurement of interfacial tension at microdroplet surfaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On two direct methods for measurement of interfacial tension at microdroplet surfaces will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-87247