Long-wave interface instabilities of a two-layer system under periodic excitation for thin films

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dc.contributor.author Navarkar, Abhishek
dc.contributor.author Amiroudine, Sakir
dc.contributor.author Demekhin, Evgeny A.
dc.contributor.author Ghosh, Uddipta
dc.contributor.author Chakraborty, S.
dc.date.accessioned 2016-11-02T10:13:17Z
dc.date.available 2016-11-02T10:13:17Z
dc.date.issued 2016-11
dc.identifier.citation Navarkar, Abhishek; Amiroudine, S.; Demekhin, E. A.; Ghosh, U. and Chakraborty, S., “Long-wave interface instabilities of a two-layer system under periodic excitation for thin films”, Microfluidics and Nanofluidics, DOI: 10.1007/s10404-016-1812-4, vol. 20, no. 11, Nov. 2016. en_US
dc.identifier.issn 1613-4982
dc.identifier.issn 1613-4990
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/2498
dc.identifier.uri http://dx.doi.org/10.1007/s10404-016-1812-4
dc.description.abstract The stability of a system of two thin liquid films under AC electroosmotic flow is studied using linear stability analysis for long-wave disturbances. The system is bounded by two rigid plates which act as substrate. Boltzmann charge distribution is assumed for the two electrolyte solutions. The effect of van der Waals interactions in these thin films is incorporated in the momentum equations through the disjoining pressure. The base-state velocity profile from the present study is compared with simple experiments and other analytical results. Parametric study involving various electrochemical factors is performed and the stability behaviour is analysed using growth rate, marginal stability, critical amplitude and maximum growth rate in phase space. An increase in the disjoining pressure is found to decrease stability of the system. On the other hand, increasing the frequency of the applied electric field is found to stabilize the system. However, the dependence of the stability on parameters such as viscosity ratio, permittivity ratio, interface zeta potential and interface charge depends not only on the value of individual parameters but also on the rest of the parameters. Design of experiments (DOE) is used to observe the general trend of stability with different parameters. en_US
dc.description.statementofresponsibility by Abhishek Navarkar, S. Amiroudine, E. A. Demekhin, U. Ghosh and S. Chakraborty
dc.format.extent Vol. 20, no. 11
dc.language.iso en_US en_US
dc.publisher Springer Verlag en_US
dc.subject AC electroosmosis en_US
dc.subject Linear stability analysis en_US
dc.subject Microfluidics en_US
dc.subject Deby-Hückel en_US
dc.subject Maxwell stress en_US
dc.title Long-wave interface instabilities of a two-layer system under periodic excitation for thin films en_US
dc.type Article en_US
dc.relation.journal Microfluidics and Nanofluidics

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