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dc.contributorBermejo Broto, Sandra
dc.contributor.authorLópez, Cristian Daniel
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica
dc.descriptionElectrowetting on dielectric (EWOD) is the change in weatability due to an applied electrostatic field. This effect is nowadays used to electrostatically control the shape of a liquid [1], developing the so-called liquid lenses (e.g. Varioptic [2]) or liquid pixels (e.g. Amazon Liquavista [3]) light beam focusing or for e-books among other applications. In this project we are going to fabricate and analyse through multiphysics modelling (COMSOL [4]) the main components involved in a electrowetting on dielectric liquid device. To do this, electrostatic and microfluidic mode
dc.description.abstractThe objectives of this master thesis addressed the fabrication problems of electrowetting displays and mirrors. In this work, a reliable and simple microfabrication process for EWOD displays and mirrors has been developed. Such a process ensures repeatability, compatibility with current TFT technology and scalability. Furthermore, realistic finite element multiphysics simulations of pixel structures have been developed. These models helped to understand how the switching phenomenon occurs. The main fabrication problems lie in the hydrophobic film treatment and the pixel filling. As a consequence, special attention was taken in these critical aspects. A novel non-coherent UV surface treatment for thin polymer films was investigated using contact angle measurements, SEM images and XPS measurements. Unlike the treatments existing in the literature, the results show that the treatment does not introduce any physical damage to the hydrophobic layer. Concerning the pixel filling method a ?Self-Assembly Oil?Water Perfusion? was implemented which dramatically reduce the filling complexity.
dc.publisherUniversitat Politècnica de Catalunya
dc.subjectÀrees temàtiques de la UPC::Enginyeria electrònica
dc.subject.lcshMicrofluidic devices
dc.subject.lcshFinite element method
dc.subject.otherElectrowetting on Dielectric
dc.subject.otherEWOD displays
dc.titleElectrowetting on dielectric: liquid device abrication and multiphysics simulation
dc.typeMaster thesis
dc.subject.lemacDispositius microfluidics
dc.subject.lemacElements finits, Mètode dels
dc.rights.access60 months embargo
dc.audience.mediatorEscola Tècnica Superior d'Enginyeria de Telecomunicació de Barcelona

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