Abstract:
In the formation of microstructures, a preformed sheet of photoresist, such as polymethylmethacrylate (PMMA), which is strain free, may be milled down before or after adherence to a substrate to a desired thickness. The photoresist is patterned by exposure through a mask to radiation, such as X-rays, and developed using a developer to remove the photoresist material which has been rendered susceptible to the developer. Micrometal structures may be formed by electroplating metal into the areas from which the photoresist has been removed. The photoresist itself may form useful microstructures, and can be removed from the substrate by utilizing a release layer between the substrate and the preformed sheet which can be removed by a remover which does not affect the photoresist. Multiple layers of patterned photoresist can be built up to allow complex three dimensional microstructures to be formed.
Abstract:
In the formation of microstructures, a preformed sheet of photoresist, such as polymethylmethacrylate (PMMA), which is strain free, may be milled down before or after adherence to a substrate to a desired thickness. The photoresist is patterned by exposure through a mask to radiation, such as X-rays, and developed using a developer to remove the photoresist material which has been rendered susceptible to the developer. Micrometal structures may be formed by electroplating metal into the areas from which the photoresist has been removed. The photoresist itself may form useful microstructures, and can be removed from the substrate by utilizing a release layer between the substrate and the preformed sheet which can be removed by a remover which does not affect the photoresist. Multiple layers of patterned photoresist can be built up to allow complex three dimensional microstructures to be formed.
Abstract:
The present invention provides an etch-free method for conductive electrode formation. The method comprises depositing an insulating layer (104) on a substrate (102), spin coating a first polymer layer (106) on the substrate (102), patterning the first polymer layer (106) by photo-lithography and depositing a conductive metal layer by physical deposition to form a top metallic layer (108) and a bottom metallic layer (110).
Abstract:
L'invention concerne un procédé de réalisation de motifs à la surface d'un substrat par graphoépitaxie comportant les étapes suivantes : - une étape de dépôt d'une couche de résine à la surface du substrat; - une étape de réalisation de motifs en résine à la surface d'un substrat; - une étape de durcissement des motifs en résine par création d'une couche de carbone amorphe à la surface des motifs en résine; - une étape de dépôt d'une couche de copolymère statistique après l'étape de durcissement des motifs en résine; - une étape de greffage de la couche de copolymère statistique sur les motifs en résine par recuit; - une étape de dépôt d'une couche d'un copolymère à bloc dans les espaces définis par les motifs en résine après l'étape de durcissement des motifs et le greffage de la couche de copolymère statistique.
Abstract:
Methods for fabricating of high aspect ratio probes and deforming micropillars and nanopillars are described. Use of polymers in deforming nanopillars and micropillars is also described.
Abstract:
In one general aspect, methods and articles of manufacture for creating micro- structures are disclosed. In one embodiment, the micro-structures are configured to provide a desired level of hermiticity to other micro-sized devices, such as MEMS and microfluidic devices. In one embodiment, the microstructures are formed from a single species of photoresist, where the photoresist is lithographically patterned to encapsulate the micro-sized device. In general, the ability to form an encapsulating micro-structure from a single photoresist relies in part on applying variable light doses to a later of photoresist to affect a desired level of cross-linking within the photoresist.
Abstract:
A method of making a microstructure includes selectively activating a portion of a surface of a silicon-containing elastomer, contacting the activated portion with a substance, and bonding the activated portion and the substance, such that the activated portion of the surface and the substance in contact with the activated portion are irreversibly attached. The selective activation may be accomplished by positioning a mask on the surface of the silicon-containing elastomer, and irradiating the exposed portion with UV radiation.
Abstract:
The invention relates to a lithographic method for producing microcomponents having a submillimeter structure, whereby the resist material can be dissolved in a simple manner. According to the invention, a structurable adhesive layer is applied to a metallic starting layer, a layer consisting of photostructurable epoxy resin is applied to the adhesive layer, and the epoxy resin is structured by means of selective illumination and dissolution of the unexposed regions in order to create supporting structures and free spaces between the supporting structures. Only the free spaces provided for the microcomponent and located between the epoxy resin supporting structures are then filled with metal according to a galvanic method, and the epoxy resin is removed, the remaining free spaces being filled with etching agents.