Abstract:
The invention relates to a device comprising a base substrate(700) with a micro component (702) attached thereto. Suitably it is provided with routing elements (704) for conducting signals to and from said component (702). It also comprises spacer members (706) which also can act as conducting structures for routing signals vertically. There is a capping structure (708) of a glass material, provided above the base substrate (700), bonded via said spacer members (706), preferably by eutectic bonding, wherein the capping structure (708) comprises vias (710) comprising metal for providing electrical connection through said capping structure. The vias can be made by a stamping/pressing method entailing pressing needles under heating to soften the glass and applying pressure, to a predetermined depth in the glass. However, other methods are possible, e-g- drilling, etching, blasting.
Abstract:
A method of producing a polymer stamp for the reproduction of devices is provided, wherein the device comprises microstructures and nanostructures. The method comprises the steps of providing a thermoplastic foil (27), providing a first substrate (1), patterning nanostructures (3) into the thermoplastic foil (27), patterning microstructures (5, 6) onto the first substrate (1), covering the first substrate (1) surface comprising the microstructures (5, 6) with the nanostructured thermoplastic foil (27), casting a polymer elastomer onto the first substrate (1) with nanostructures (3) and microstructures (5, 6) to form a polymer stamp (11) and releasing the polymer stamp (11). Accordingly, a polymer stamp and a device are provided, wherein the aspect ratio of a single nanostructure element in the polymer stamp or the device is larger than 5.
Abstract:
The invention relates to a moulded product comprising a substrate (1), to which a plurality of first fibres (10) is applied, the underside (11) of each fibre being permanently fixed to the surface (2) of the substrate (1), and a plurality of second fibres (20), the respective undersides (21) of which are permanently connected to the surfaces (12) of the first fibres (10). The flanks (15) of the first fibres (10) and the flanks (25) of the second fibres (20) are concave. The invention further relates to a method for producing a moulded product of this type and to the use of said product as the attachment surface of an object.
Abstract:
The present invention provides a method adhering a layer to a substrate that features defining first and second interfaces by having a composition present between the layer and the substrate that forms covalent bonds to the layer and adheres to the substrate employing one or more of covalent bonds, ionic bonds and Van der Waals forces. In this manner, the strength of the adhering force of the layer to the composition is assured to be stronger than the adhering force of the layer to the composition formed from a predetermined adhering mechanism, i.e., an adhering mechanism that does not include covalent bonding.
Abstract:
Die Erfindung betrifft ein Verfahren, mit dem die Oberflächen von Körpern mit unterständigen Mikro- oder Nanostrukturen versehen sowie mikro- und/oder nanogroß durchbrochene Folien hergestellt werden können. Hierzu wird die aus Diamant, Hartmetall, Glas oder Keramik bestehende Spitze (2) zumindest eines nadelförmigen Prägewerkzeugs (1) unter Verwendung einer Positioniereinrichtung sehr oft auf verschiedene Stellen der Oberfläche des Körpers (3) gepresst, wodurch an allen Aufpressstellen Vertiefungen (4) eingeprägt und/oder Durchbrüche (5) erzeugt werden. Das Verfahren ist für die kostengünstige Herstellung von Urformen für den Polymer-Spritzguss von Mikro- oder Nanolinsenarrays, von Mikro- oder Nano-Prägewerkzeugen, von Mikroreaktoren ("lab on a chip"), von strukturierten Elektroden- sowie Wärmetauscherflächen, von lithografischen Masken und für die fälschungssichere Kennzeichnung von Gegendständen geeignet. Spezifische Signaturen können auch als Nachweis für nachträglich erfolgte Veränderungen oder Belastungen (Schrumpfung, plastische Verformung, Reibung, Verschleiß, Korrosion, Beschichtung) an Körpern dienen. - Fig. 1 -
Abstract:
A lithographic process for forming a pattern in relief (20) on a mass (10) of polymeric material comprises the steps of: preparing the mass (10) of polymeric material and a die (12) having a surface region (14) facing towards the mass (10) of polymeric material and which reproduces in negative the pattern in relief (20); heating the die (12) and putting the mass (10) of polymeric material into contact with the die (12) in any temporal sequence, in such a way that the part of the mass (10) of polymeric material in contact with the surface zone (14) is subject to softening; and separating the die (12) from the mass (10) of polymeric material on the surface of which the pattern in relief (20) has been formed. The heating of at least one part of the die (12) is obtained by generation of thermal energy upon dissipation of another form of energy in at leats one region (16) of the die (12).