Laser micromachining of lithium niobate-based resonant sensors towards medical devices applications

This paper presents a micromachining process for lithium niobate (LiNbO3) material for the rapid prototyping of a resonant sensor design for medical devices applications. Laser micromachining was used to fabricate samples of lithium niobate material. A qualitative visual check of the surface was performed using scanning electron microscopy. The surface roughness was quantitatively investigated using an optical surface profiler. A surface roughness of 0.526 μm was achieved by laser micromachining. The performance of the laser-micromachined sensor has been examined in different working environments and different modes of operation. The sensor exhibits a Quality-factor (Q-factor) of 646 in a vacuum; and a Q-factor of 222 in air. The good match between the modelling and experimental results shows that the laser-micromachined sensor has a high potential to be used as a resonance biosensor

Texturizado en compuesto polimérico reforzado con fibra de carbono (CFRP) mediante electroerosión por hilo (WEDM)

En este trabajo de fin de grado se ha realizado un texturizado sobre probetas de CFRP mediante electroerosión por hilo, buscando una serie de parámetros que permitieran iniciar y mantener la descarga encargada de eliminar la capa superficial del material, así como observando los resultados obtenidos mediante inspección tanto visual como con programas 3D que permiten realizar mediciones sobre las probetas