Azmin, M;
Mohamedi, G;
Edirisinghe, M;
Stride, EP;
(2012)
Dissolution of coated microbubbles: The effect of nanoparticles and surfactant concentration.
Materials Science and Engineering: C
, 32
(8)
2654 - 2658.
10.1016/j.msec.2012.06.019.
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Abstract
The ability of solid particles to stabilise emulsions is a well known phenomenon which has recently been demonstrated for the stabilisation of gas bubbles. In this paper, a new theoretical model is developed which describes how an adsorbed layer of solid nanoparticles modifies the interfacial tension and diffusivity of a gas bubble in a liquid and hence its stability. In agreement with experimental observations on microbubbles coated with 15 nm diameter spherical gold particles, the results of simulations with the model indicate that the particles substantially decrease the rate at which bubble dissolution occurs and enables them to maintain a stable radius once a critical particle concentration has been reached.
| Type: | Article |
|---|---|
| Title: | Dissolution of coated microbubbles: The effect of nanoparticles and surfactant concentration |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.msec.2012.06.019 |
| Publisher version: | http://dx.doi.org/10.1016/j.msec.2012.06.019 |
| Language: | English |
| Additional information: | This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
| Keywords: | Microbubbles, Nanoparticles, Coated bubbles, Ultrasound contrast agents, Diffusion |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Security and Crime Science |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1379245 |
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