Abstract:
A MEMS device comprises a membrane layer and a back-plate layer formed over the membrane layer. The membrane layer comprises an outer portion and an inner portion raised relative to the outer portion and a sidewall for connecting the inner portion and the outer portion. The sidewall is non-orthogonal to the outer portion.
Abstract:
Polymers, methods of use thereof, and methods of decomposition thereof, are provided. One exemplary polymer, among others, includes, a photodefinable polymer having a sacrificial polymer and a photoinitiator.
Abstract:
The invention relates to a process for producing at least one air gap in a microstructure, which comprises: 1) the supply of a microstructure comprising at least one gap filled with a sacrificial material that decomposes starting from a temperature θ1, this gap being delimited over at least one part of its surface by a non-porous membrane, composed of a material that forms a matrix and of a pore-forming agent that decomposes at a temperature θ2
Abstract:
A method of fabricating a polymer-based capacitive ultrasonic transducer, which comprises the steps of: (a) providing a substrate; (b) forming a first conductor on the substrate; (c) coating a sacrificial layer on the substrate while covering the first conductor by the same; (d) etching the sacrificial layer for forming an island while maintaining the island to contact with the first conductor; (e) coating a first polymer-based material on the substrate while covering the island by the same; (f) forming a second conductor on the first polymer-based material; (g) forming a via hole on the first polymer-based material while enabling the via hole to be channeled to the island; and (h) utilizing the via hole to etch and remove the island for forming a cavity.
Abstract:
The invention relates to a method of realization of a sacrificial layer, including the steps of: lithography of a resin deposited on a substrate in order to supply a lithographed resist pattern on a substrate zone, the zone having a given size and a given form, the pattern occupying a given volume, annealed according to a thermal cycle of the lithographed resist pattern, the method being characterised in that it includes, according to the resin, the determination of the size and of the form of said zone of the substrate, and the determination of the volume of the resin deposited on said zone so that the thermal cycle annealing supplies a profile chosen from among the following profiles: a planarising domed profile and a “double air gap” profile.
Abstract:
A method of forming air gaps within a solid structure is provided. In this method, a sacrificial material is covered by an overlayer. The sacrificial material is then removed through the overlayer to leave an air gap. Such air gaps are particularly useful as insulation between metal lines in an electronic device such as an electrical interconnect structure. Structures containing air gaps are also provided.
Abstract:
Embodiments of the present disclosure provide systems and methods for producing micro electro-mechanical device packages. Briefly described, in architecture, one embodiment of the system, among others, includes a micro electro-mechanical device formed on a substrate layer; and a thermally decomposable sacrificial structure protecting at least a portion of the micro electro-mechanical device, where the sacrificial structure is formed on the substrate layer and surrounds a gas cavity enclosing an active surface of the micro electro-mechanical device. Other systems and methods are also provided.
Abstract:
A method of forming air gaps within a solid structure is provided. In this method, a sacrificial material is covered by an overlayer. The sacrificial material is then removed through the overlayer to leave an air gap. Such air gaps are particularly useful as insulation between metal lines in an electronic device such as an electrical interconnect structure. Structures containing air gaps are also provided.
Abstract:
An epitaxial layer having monocrystalline and polycrystalline silicon grown side by side is deposited on a substrate, a region being exposed as a vertically movable polycrystalline diaphragm, especially for a pressure sensor, by etching. The poly/mono transition regions on both sides of the diaphragm each nave an oblique profile such that the monocrystalline silicon extends into the diaphragm region in the form of an overhang above the polycrystalline silicon. Piezo elements are implanted in the overhang.
Abstract:
Compositions, methods of use thereof, and methods of decomposition thereof, are provided. One exemplary composition, among others, includes a polymer and a catalytic amount of a negative tone photoinitiator.