Abstract:
L'Invention se rapporte à un procédé de réalisation d'un composant à partir d'un substrat hétérogène comportant une première et une deuxième parties en au moins un matériau monocristallin, et une couche sacrificielle constituée par au moins un empilement d'au moins une couche de Si monocristallin située entre deux couches de SiGe monocristallin, cet empilement étant disposé entre lesdites première et deuxième partie en matériau monocristallin, caractérisé en ce qu'il consiste à graver ledit empilement en réalisant : e) au moins une ouverture (20) dans la première et/ou la deuxième parties et la première et/ou la deuxième couche de SiGe de façon à déboucher sur la couche de Si, f) une élimination de toute ou partie de la couche de Si.
Abstract:
A micromechanical structure and a method of fabricating a micromechanical structure are provided. The micromechanical structure comprises a silicon (Si) based substrate; a micromechanical element formed directly on the substrate; and an undercut formed underneath a released portion of the micromechanical element; wherein the undercut is in the form of a recess formed in the Si based substrate.
Abstract:
A method of manufacturing a non-volatile memory bitcell comprises the steps of depositing a first layer of conductive material on a substrate and patterning and etching the first layer of conductive material to form three non-linearly disposed electrodes. The method also comprises the steps of depositing a first layer of sacrificial material on the electrodes and the substrate and providing an elongate cantilever structure on the first layer of sacrificial material such that the cantilever structure and at least a portion of each electrode overlap each other. The method also includes the steps of depositing a second layer of sacrificial material on the cantilever structure and the first layer of sacrificial material and providing a capping layer on the second layer of sacrificial material and providing holes in the capping layer such that at least a portion of the second layer of sacrificial material is exposed. Finally, the method provides the step of removing the first and second layers of sacrificial material through the holes provided in the capping layer, thereby defining a cavity in which the cantilever structure is suspended.
Abstract:
Trilayered Beam MEMS Device and Related Methods. According to one embodiment, a method for fabricating a trilayered beam is provided. The method can include depositing a sacrificial layer on a substrate and depositing a first conductive layer on the sacrificial layer. The method can also include forming a first conductive microstructure by removing a portion of the first conductive layer. Furthermore, the method can include depositing a structural layer on the first conductive microstructure, the sacrificial layer, and the substrate and forming a via through the structural layer to the first conductive microstructure. Still furthermore, the method can include the following: depositing a second conductive layer on the structural layer and in the via; forming a second conductive microstructure by removing a portion of the second conductive layer, wherein the second conductive microstructure electrically communicates with the first conductive microstructure through the via; and removing a sufficient amount of the sacrificial layer so as to separate the first conductive microstructure from the substrate, wherein the structural layer is supported by the substrate at a first end and is freely suspended above the substrate at an opposing second end.
Abstract:
Trilayered Beam MEMS Device and Related Methods. According to one embodiment, a method for fabricating a trilayered beam is provided. The method can include depositing a sacrificial layer on a substrate and depositing a first conductive layer on the sacrificial layer. The method can also include forming a first conductive microstructure by removing a portion of the first conductive layer. Furthermore, the method can include depositing a structural layer on the first conductive microstructure, the sacrificial layer, and the substrate and forming a via through the structural layer to the first conductive microstructure. Still furthermore, the method can include the following: depositing a second conductive layer on the structural layer and in the via; forming a second conductive microstructure by removing a portion of the second conductive layer, wherein the second conductive microstructure electrically communicates with the first conductive microstructure through the via; and removing a sufficient amount of the sacrificial layer so as to separate the first conductive microstructure from the substrate, wherein the structural layer is supported by the substrate at a first end and is freely suspended above the substrate at an opposing second end.
Abstract:
A method for fabricating a trilayered beam MEMS device includes depositing a sacrificial layer (310) on a substrate and depositing and removing a portion of a first conductive layer on the sacrificial layer (310) to form a first conductive microstructure (312); depositing a structural layer (322) on the first conductive microstructure (312); the sacrificial layer (310), and the substrate (300) and forming a via through the structural layer (322) to the first conductive microstructure (312); depositing a second conductive layer (336) on the structural layer (322) and in the via; forming a second conductive microstructure (324) by removing a portion of the second conductive layer (336), wherein the second conductive microstructure (324) electrically communicates with the first conductive microstructure (312) through the via; and removing a sufficient amount of the sacrificial layer (310) so as to separate the first conductive microstructure (312) from the substrate, wherein the structural layer (322) is supported by the substrate at a first end is freely suspended above the substrate at an opposing second end.
Abstract:
The invention provides a microfabrication process which may be used to manufacture a MEMS device. The process comprises depositing one or a stack of layers on a base layer, said one layer or an uppermost layer in said stack of layers being a sacrificial layer; patterning said one or a stack of layers to provide at least one aperture therethrough through which said base layer is exposed; depositing a photosensitive layer over said one or a stack of layers; and passing light through said at least one aperture to expose said photosensitive layer.
Abstract:
A method for manufacturing an MEMS element for flattening a drive side electrode surface, reducing irregularities of beam shape, improving performance, and improving performance uniformity. The method includes a step of forming a substrate side electrode on a substrate, a step of forming a fluid film before or after formation of a sacrificial layer, a step of forming a beam having a drive side electrode on a flattened surface, and a step of removing the sacrificial layer.
Abstract:
A discrete electro-mechanical device includes a structure (182) having an electrically-conductive trace. A defined patch of nanotube fabric (154) is disposed in spaced relation to the trace; and the defined patch of nanotube fabric (154) is electromechanically deflectable between a first and second state. In the first state, the nanotube article is in contact with the trace. A low resistance signal path is in electrical communication with the defined patch of nanofabric (154). Under certain embodiments, the structure (182) includes a defined gap (180) into which the electrically conductive trace is disposed.