Examinando por Materia "MICROFLUIDOS"
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Proyecto final de Grado Desarrollo de una nueva técnica para la microfabricación de dispositivos microfluidícos basados en el fenómeno dielectroforético(2017) Pastore Benaim, Ignacio; Morales, Mercedes Consuelo"En este trabajo se propone una nueva técnica de microfabricación para dispositivos DEP. La misma se basa en la técnica de \toner-transfer" utilizada para construir circuitos impresos (PCB). Las plataformas microfluidícas basadas en PCB (\Lab-on-a-PCB") aprovechan tecnología ampliamente utilizada en la microelectrónica permitiendo el escalado en la producción. Además ofrecen una solución directa a uno de los desafíos más importantes que presenta la microfluidíca: la integración entre circuitos electrónicos y redes microfluidícas."Artículo de Publicación Periódica Microfluidic device concept based on microoscillator dynamics at a liquid–liquid interface(2008) Allievi, Alejandro"Oscillating microbeams and microplates have been used extensively as sensing components for property detection in fluids. In liquids, their quality factor Q is drastically decreased, thus affecting a microsensor’s resolution. To improve the Q-factor, we present a novel concept based on the positive use of surface tension on a mechanical oscillator composed of a microbeam–microplate assembly suspended at a liquid–liquid interface in a microfluidic channel. An analytical model is developed to investigate rotational dynamics of such an assembly..."Ponencia en Congreso Tilt dynamics of an electrostatically actuated microoscillator at a liquid-liquid interface(2011) Allievi, Alejandro"We investigate the time-domain tilt response of an electrostatically actuated mechanical microoscillator positioned at a liquid-liquid interface. An analytical model is presented to simulate the microoscillator’s rotational motion inside a microchannel completely filled with two immiscible liquids. The model considers two coupled ordinary differential equations; one simulates the mechanical response of the microplate-microbeam assembly making-up the microoscillator and the other provides the behaviour of the electrical charge responsible for the electrostatic moment that tilts the microplate. Results show that remarkable improvements in sampling time and sensitivity can be obtained using a bi-liquid configuration versus its singleliquid counterpart. Therefore, enhanced performance of mechanical microsensors for liquids could be achieved."