Abstract:
Capteur microélectromécanique comportant une partie fixe (2) et une partie mobile (4) suspendue à la partie fixe (2) de sorte que la partie mobile (4) soit apte à se déplacer au moins dans une direction de déplacement hors-plan (Z), la partie fixe (2) comportant au moins des premières électrodes (8) s'étendant parallèlement à la direction de déplacement (Z) de la partie mobile (4), la partie mobile (4) comportant une masse sismique (18) et au moins des deuxièmes électrodes (20) s'étendant parallèlement à la direction de déplacement hors-plan (Z), les premières électrodes (8) et les deuxièmes électrodes (20) étant disposées les unes par rapport aux autres de sorte à être interdigitées, dans lequel les deuxième électrodes (20) sont directement connectée à la masse inertielle (18) et une partie seulement de la face de chaque électrode mobile (20) est en regard d'une électrode fixe (8) au repos.
Abstract:
System and methods for highly integrated optical readout MEMS sensors are provided. In one embodiment, a method for an integrated waveguide optical-pickoff sensor comprises: launching a laser beam generated by a laser light source into an integrated waveguide optical-pickoff monolithically fabricated within a first substrate, the integrated waveguide optical-pickoff including an optical input port, a coupling port, and an optical output port; and detecting an amount of coupling of the laser beam from the coupling port to a sensor component separated from the coupling port by a gap by measuring an attenuation of the laser beam at the optical output port.
Abstract:
A microdevice comprises an insulator base having a recess therein and a beamlike silicon structural body provided in the front side of the base and surrounding the recess. The beamlike structural body includes a functional section that comprises a support joined to the base, a cantilevered beam integrated with the support and extending over the recess, and a conductive film formed at least over the surface of the recess immediately under the cantilevered beam and electrically connected to the support. The conductive film serves to prevent the recess from being charged positively during dry etching. Therefore the etching gas having positive charge is repelled by the electrical repulsive force exerted by the recess and do not corrode the structural body. Thus such a microdevice has a beamlike structural body of high shape and dimensional precisions, providing high reliability and high degree of freedom of design.
Abstract:
A system and method for a micro-electrical-mechanical system (MEMS) device including a substrate and a free-standing and suspended electroplated metal MEMS structure formed on the substrate. The free-standing and suspended electroplated metal MEMS structure includes a metal mechanical element mechanically coupled to the substrate and a seed layer mechanically coupled to and in electrical communication with the mechanical element, the seed layer comprising at least one of a refractory metal and a refractory metal alloy, wherein a thickness of the mechanical element is substantially greater than a thickness of the seed layer such that the mechanical and electrical properties of the free-standing and suspended electroplated metal MEMS structure are defined by the material properties of the mechanical element.