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Actuador térmico de burbuja para movimiento de muestras líquidas


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Author: Valverde Carmona, José María
Director: Perdigones Sánchez, Francisco
Department: Universidad de Sevilla. Departamento de Ingeniería Electrónica
Date: 2017
Document type: Final Degree Work
Academic Title: Universidad de Sevilla. Grado en Ingeniería de las Tecnologías de Telecomunicación
Abstract: El propósito principal del proyecto es el diseño y la fabricación de un actuador térmico de burbuja para el movimiento de muestras líquidas. Para ello se hace uso de una microbomba accionada por burbuja térmica generada por la transición de líquid...
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The main aim of this project is the design and the fabrication of a thermal-bubble-actuated for the movement of liquid samples. To this end, use is made of a micropump actuated by thermal-bubble generated by the transition from liquid to vapour. Broadly, the micropump consists of a resistive heater, a pair of nozzle-diffuser flow controller and a chamber where the bubble is formed. The actuation mechanism comes from periodically nucleating and collapsing thermal bubble which generates a net flow in one direction. In the fabrication process of the device have been used low-cost materials with technology of mass production. The microfluidic part has been produced by the hot embossing technique, with all the advantages it offers. Following the completion of different experiments, is achieved a maximum volume flow rate when the system is excitated with a square signal of 50 mHz, duty cycle of 50 % and average power consumption of 4.7 W.
Cite: Valverde Carmona, J.M. (2017). Actuador térmico de burbuja para movimiento de muestras líquidas. (Trabajo Fin de Grado Inédito). Universidad de Sevilla, Sevilla.
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