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dc.contributor.authorFlorea, Larisa
dc.contributor.authorMartin Mayor, Alain
dc.contributor.authorBou-Ali, M. Mounir
dc.contributor.authorMeagher, Kate
dc.contributor.authorDiamond, Dermot
dc.contributor.authorTutar, Mustafa
dc.contributor.authorBenito López, Fernando
dc.date.accessioned2016-10-04T16:29:16Z
dc.date.available2016-10-04T16:29:16Z
dc.date.issued2016-08
dc.identifier.citationSensors and Actuators B: Chemical 231 : 744–751 (2016)es
dc.identifier.issn0925-4005
dc.identifier.urihttp://hdl.handle.net/10810/19071
dc.description.abstract[EN] Therefore the understanding and proper evaluation of the flow and mixing behaviour at microscale becomes a very important issue. In this study, the diffusion behaviour of two reacting solutions of HCI and NaOH were directly observed in a glass/polydimethylsiloxane microfluidic device using adaptive coatings based on the conductive polymer polyaniline that are covalently attached to the microchannel walls. The two liquid streams were combined at the junction of a Y-shaped microchannel, and allowed to diffuse into each other and react. The results showed excellent correlation between optical observation of the diffusion process and the numerical results. A numerical model which is based on finite volume method (FVM) discretisation of steady Navier-Stokes (fluid flow) equations and mass transport equations without reactions was used to calculate the flow variables at discrete points in the finite volume mesh element. The high correlation between theory and practical data indicates the potential of such coatings to monitor diffusion processes and mixing behaviour inside microfluidic channels in a dye free environment.es
dc.description.sponsorshipThe project was carried out with the support of Science Foundation Ireland under INSIGHT award SFI/12/RC/2289. This work was also supported by Gobierno Vasco, Dpto. Industria, Innovación,Comercio y Turismo under ETORTEK 2013, ETORTEK 2014 for the project undertaken by Microchip and ELKARTEK 2015–16 the project of Fluids Mechanics Groups (IT557-10) of Gobierno Vasco,Dpto. de Educación. F.B.L. acknowledges the Ramón y Cajal programme (Ministerio de Economía y Competitividad). FBL personally acknowledges Marian M. De Pancorbo for letting him to use her laboratory facilities at UPV/EHU.es
dc.language.isoenges
dc.publisherElsevieres
dc.relationeu-repo/grantAgreement/EC/FP7/604241es
dc.relationinfo:eu-repo/grantAgreement/MINECO/RYC
dc.rightsinfo:eu-repo/semantics/openAccesses
dc.subjectpolyanilinees
dc.subjectmixing processes
dc.subjectadaptive coatingses
dc.subjectoptical sensores
dc.subjectmicrofluidicses
dc.subjectcomputational fluid dynamics (CFD)es
dc.titleAdaptive coatings based on polyaniline for direct 2D observation of diffusion processes in microfluidic systemses
dc.typeinfo:eu-repo/semantics/articlees
dc.rights.holder© 2016 Elsevier B.V. All rights reservedes
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0925400516303793es
dc.identifier.doihttp://dx.doi.org/10.1016/j.snb.2016.03.085
dc.departamentoesQuímica analíticaes_ES
dc.departamentoeuKimika analitikoaes_ES
dc.subject.categoriaCHEMISTRY, MATERIALS
dc.subject.categoriaELECTRICAL AND ELECTRONIC ENGINEERING
dc.subject.categoriaELECTRONIC, OPTICAL AND MAGNETIC MATERIALS
dc.subject.categoriaINSTRUMENTS AND INSTRUMENTATION
dc.subject.categoriaMETALS AND ALLOYS
dc.subject.categoriaPHYSICS, CONDENSED MATTER
dc.subject.categoriaSURFACES, COATINGS AND FILMS


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