Abstract:
La présente invention concerne un procédé de fabrication d'une pluralité de microstructures métalliques caractérisé en ce qu 'il comprend les étapes consistant à a) se munir d'un substrat conducteur ou d'un substrat isolant recouvert d'une couche conductrice d'amorçage. b) appliquer sur la partie conductrice de la surface du substrat une couche de résine photosensible, c) aplanir la surface de la couche de résine photosensible jusqu'à une épaisseur et/ou un état de surface désiré d) irradier la couche de résine à travers un masque définissant le contour de la microstructure désirée ; e) dissoudre les zones non polymérisées de la couche de résine photosensible pour faire apparaître par endroit la surface conductrice du substrat, f) déposer électro-galvaniquement au moins une couche d'un métal à partir de ladite couche conductrice pour former un bloc atteignant sensiblement la surface supérieure de la résine photosensible. g) aplanir la résine et le métal électro formé pour amener la résine et les blocs électro formés au même niveau et ainsi former des pièces ou microstructure électro formées, h) séparer la couche de résine et le bloc électro-déposé du substrat et i) éliminer la couche de résine photosensible de la structure obtenue à l'issu de l'étape g) pour libérer les microstructures ainsi formées.
Abstract:
An electroplating method that includes: a) contacting a first substrate with a first article, which includes a substrate and a conformable mask disposed in a pattern on the substrate; b) electroplating a first metal from a source of metal ions onto the first substrate in a first pattern, the first pattern corresponding to the complement of the conformable mask pattern; and c) removing the first article from the first substrate, is disclosed. Electroplating articles and electroplating apparatus are also disclosed.
Abstract:
Ion beam lithography technique wherein a higher amount of radiation energy is deposited to predetermined regions in the bulk if a suitable substrate. By selecting the radiation nature, its energy and the irradiation parameters a structure can be created in the bulk of the material leaving the surface essentially untouched.
Abstract:
The invention relates to the area of microelectromechanical systems in which electronic circuits and mechanical devices are integrated on the same silicon chip. The method taught herein allows the fabrication of thin film structures (20) in excess of 150 micrometers in height (y) using thin film deposition processes. Wafers (60, 52) may be employed as reusable molds for efficient production of such structures.
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:
Die Erfindung betrifft ein Verfahren zum Herstellen einer Vielzahl plattenförmiger Mikrostrukturkörper aus Metall, bei dem durch wiederholtes Abformen eines die Mikrostrukturen aufweisenden Werkzeugs mit einer elektrisch isolierenden Abformmasse Negativformen der Mikrotrukturen erzeugt werden, die galvanisch mit einem Metall aufgefüllt werden, wonach die Negativformen entfernt werden, und bei dem die elektrisch isolierende Abformmasse mit einer elektrisch leitenden, als Elektrode für die Galvanik dienenden Schicht verbunden wird, wobei die Dicke der elektrisch isolierenden Abformmasse der Höhe der herzustellenden Mikrostrukturen entspricht. Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren der gattungsgemäßen Art so zu gestalten, daß der Herstellungsaufwwand verringert und damit bessere Voraussetzungen für eine Massenherstellung geschaffen werden. Zur Lösung schlägt die vorliegende Erfindung vor, daß vor dem Abformen eine Schicht (31) aus der elektrisch isolierende Abformmasse mit der Schicht (3) aus elektrisch leitender Abformmasse verbunden wird, und daß das Werkzeug (31) soweit in die Schicht (31) aus der elektrisch isolierenden Abformmasse eingedrückt wird, bis die Stirnflächen (33a) der Mikrostrukturen (33) des Werkzeugs (31) die Schicht (30) aus elektrisch leitender Abformmasse berühren.
Abstract:
A micro handling device for handling micro objects and measuring forces exerted on the micro objects. The micro handling device can include a micro gripper and a micro spring configured as a force sensor connected to the micro gripper.
Abstract:
A method for fabrication of a piece including, superposing an electrically insulating layer including a first orifice, an additional layer including a first aperture, an intermediate layer including a first hole, and a base layer surmounted by a base motif, depositing a metal layer, so that at the end of this step, the metal layer forms a shell covering electrically conductive walls of the base motif, of the first orifice, of the first aperture and of the first hole, and includes a lateral area resting on the insulating layer, dissolving the insulating layer, coating the metal or alloy layer with a volume formed by a base material of the piece, so that the volume conforms to the shapes of the metal layer.
Abstract:
The invention relates to a process for fabricating a monolayer or multilayer metal structure in LIGA technology, in which a photoresist layer is deposited on a flat metal substrate, a photoresist mold is created by irradiation or electron or ion bombardment, a metal or alloy is electroplated in this mold, the electroformed metal structure is detached from the substrate and the photoresist is separated from this metal structure, wherein the metal substrate is used as an agent involved in the forming of at least one surface of the metal structure other than that formed by the plane surface of the substrate.
Abstract:
A method of fabricating a plurality of metallic microstructures by LIGA process, the method including a flattening step or a levelling step of the resin layer before the step of electroforming the metallic microstructures permitting the resin layer to have a uniform thickness, which enables molds, and then finished metallic microstructures, to be made with uniform dimensional precision in the plane for the metallic microstructures of the same substrate.