dc.creator | Khayari, A. | es |
dc.creator | Medrano, M. | es |
dc.creator | Verlage, E. | es |
dc.creator | Velázquez Ahumada, María del Castillo | es |
dc.creator | Freire Rosales, Manuel José | es |
dc.creator | Ramos Reyes, Antonio | es |
dc.date.accessioned | 2019-10-10T12:23:48Z | |
dc.date.available | 2019-10-10T12:23:48Z | |
dc.date.issued | 2011 | |
dc.identifier.citation | Khayari, A., Medrano, M., Verlage, E., Velázquez Ahumada, M.d.C., Freire Rosales, M.J. y Ramos Reyes, A. (2011). Microwave-induced water flow in a microchannel built on a coplanar waveguide. Journal of Applied Physics, 110 (6), 064912. | |
dc.identifier.issn | 0021-8979 | es |
dc.identifier.issn | 1089-7550 | es |
dc.identifier.uri | https://hdl.handle.net/11441/89590 | |
dc.description.abstract | We present experimental and numerical investigations of water flow in a microsystem induced by
microwave electric fields. Microwave dielectric heating induces gradients of temperature which
produce spatial variations in mass density and dielectric permittivity that lead to buoyancy and
dielectric forces in the liquid, respectively. The experimental system consists of a microchannel, filled
with water, which is built on top of a coplanar waveguide operating in the fundamental transversal
electromagnetic (TEM) mode at frequencies in the range 1–4 GHz. The flow originated by standing
waves is studied. Maxima and minima of electric field amplitude lead to maxima and minima of fluid
flow. This observation allows us to measure the TEM wavelength and good agreement is found with
the theoretical results for the TEM mode inside the microchannel. We also present three dimensional
finite-element calculations of the electric, temperature and fluid velocity fields in the microchannel. In
a first approach, the calculations are performed using the equations in the limit of small temperature
variations, which allows us to decouple the electrical, mechanical and thermal equations. These
calculations show a good agreement with the velocity profiles. Subsequently, the effect of considering
finite increments of temperature is taken into account and the new numerical results improve the
quantitative comparison with experimental velocities. | es |
dc.description.sponsorship | Ministerio de Gobierno español MEC-FIS2006-03645 | es |
dc.description.sponsorship | Junta de Andalucía-P09-FQM-4584 | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | AIP Publishing | es |
dc.relation.ispartof | Journal of Applied Physics, 110 (6), 064912. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.title | Microwave-induced water flow in a microchannel built on a coplanar waveguide | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear | es |
dc.relation.projectID | FIS2006-03645 | es |
dc.relation.projectID | P09-FQM-4584 | es |
dc.relation.publisherversion | https://aip.scitation.org/doi/10.1063/1.3641516 | es |
dc.identifier.doi | 10.1063/1.3641516 | es |
idus.format.extent | 10 p. | es |
dc.journaltitle | Journal of Applied Physics | es |
dc.publication.volumen | 110 | es |
dc.publication.issue | 6 | es |
dc.publication.initialPage | 064912 | es |
dc.identifier.sisius | 6521380 | es |