Abstract:
The present invention relates to methods for joining materials as well as articles manufactured using such processes. The invention pertains to a process for joining a first substrate to a second substrate. The process includes irradiating a portion of a first substrate with a laser beam having a first wavelength and intensity sufficient to increase the absorbance of the first substrate to light having a second, different wavelength. The laser beam may carbonize at least a portion of the irradiated portion of the first substrate imparting a higher absorbance to light than non-irradiated portions of the first substrate. A second substrate is then placed in contact with the irradiated portion of the first substrate. The first substrate is then irradiated with a second laser having a second wavelength, different to the first wavelength; with a sufficient intensity to heat and, preferably melt, the irradiated portion of the first substrate.
Abstract:
A method for making an electromechanical chip using a plurality of transparent substrates, comprising the steps of: machining, using photoacoustic compression, full or partial voids in at least one of the plurality of substrates. The plurality of transparent substrates are stacked and arranged in a specific order. The transparent substrates are affixed and sealed together. The chip may be sealed by laser welding or adhesive.
Abstract:
Systems and methods for a micro-electromechanical system (MEMS) device are provided. In one embodiment, a system comprises a first outer layer and a first device layer comprising a first set of MEMS devices, wherein the first device layer is bonded to the first outer layer. The system also comprises a second outer layer and a second device layer comprising a second set of MEMS devices, wherein the second device layer is bonded to the second outer layer. Further, the system comprises a central layer having a first side and a second side opposite that of the first side, wherein the first side is bonded to the first device layer and the second side is bonded to the second device layer.
Abstract:
An interposer comprises a substrate and a plurality of posts. Each of the posts extends substantially through a thickness of the substrate. A method for forming an interposer comprises forming a fill hole in a first side of a substrate and a cavity in a second side of the substrate. The cavity is in fluidic communication with the fill hole. A plurality of posts is formed in the cavity. An encapsulant is injected through the fill hole into the cavity to encapsulate the plurality of posts.
Abstract:
Substrat microélectronique (400) comportant au moins : - une couche support (102), - une couche supérieure (106) composée d'au moins un semi-conducteur, - une couche intermédiaire (104) composée d'au moins un matériau organique et comportant en outre une ou plusieurs portions (402) de matériau diélectrique dont la dureté est supérieure à celle du matériau organique. Ces portions sont disposées dans la couche de matériau organique et ont une épaisseur sensiblement égale à celle de la couche de matériau organique. La couche intermédiaire (104) est apte à être gravé sélectivement par rapport au semi-conducteur de la couche supérieure et est disposée entre la couche support et la couche supérieure. L'invention décrit également un procédé de réalisation d'un dispositif microélectronique dans la couche supérieure du substrat ci-mentionné, ainsi qu'un procédé d'encapsulation de ce dispositif.
Abstract:
Electromagnetic wave oscillators each having a multi-tunnel and electromagnetic wave generating apparatuses including the electromagnetic wave oscillators are provided. The electromagnetic wave oscillator includes: a first waveguide (130) which has a folded structure such that a path traveled by an electromagnetic wave through the first waveguide crosses an axial direction a plurality of times; an electron beam tunnel (131) through which an electron beam passes, wherein the electron beam tunnel extends along the axial direction and crosses the first waveguide a plurality of times; and at least one auxiliary tunnel (139) which extends parallel to the electron beam tunnel and which crosses the first waveguide a plurality of times.
Abstract:
An electronic module comprises a substrate having a plurality of cavities. A die is encapsulated within each cavity. A post defines at least a portion of an electrical connection through the substrate.