Abstract:
A MEMS device is described that has a body with a component bonded to the body. The body has a main surface and a side surface adjacent to the main surface and smaller than the main surface. The body is formed of a material and the side surface is formed of the material and the body is in a crystalline structure different from the side surface. The body includes an outlet in the side surface and the component includes an aperture in fluid connection with the outlet.
Abstract:
The present invention relates to a method of fabricating a resonator in a substrate, characterized in that it comprises the following steps: a) modifying the structure of at least one zone of the substrate so as to render said at least one zone more selective; b) etching said at least zone so as to selectively fabricate said resonator.
Abstract:
A MEMS device is described that has a body with a component bonded to the body. The body has a main surface and a side surface adjacent to the main surface and smaller than the main surface. The body is formed of a material and the side surface is formed of the material and the body is in a crystalline structure different from the side surface. The body includes an outlet in the side surface and the component includes an aperture in fluid connection with the outlet.
Abstract:
The invention provides a system and process of patterning structures on a carbon based surface comprising exposing part of the surface to an ion flux, such that material properties of the exposed surface are modified to provide a hard mask effect on the surface. A further step of etching unexposed parts of the surface forms the structures on the surface. The inventors have discovered that by controlling the ion exposure, alteration of the surface structure at the top surface provides a mask pattern, without substantially removing any material from the exposed surface. The mask allows for subsequent ion etching of unexposed areas of the surface leaving the exposed areas raised relative to the unexposed areas thus manufacturing patterns onto the surface. For example, a Ga+ focussed ion beam exposes a pattern onto a diamond surface which produces such a pattern after its exposure to a plasma etch. The invention is particularly suitable for patterning of clear well-defined structures down to nano-scale dimensions.
Abstract:
A differential pressure sensor comprises a membrane (6) arranged over a cavity (6) on a semiconductor substrate (1). A lid layer (10) is arranged at the top side of the device and comprises an access opening (13a) for providing access to the top side of the membrane (6). A channel (9) extends laterally from the cavity (6) and intersects with a bore (15). The bore (15) is formed by laser drilling from the bottom side of the substrate (1) and provides access to the bottom side of the membrane (6). The bore (15) extends all through the substrate (1) and optionally into the lid layer (10).
Abstract:
In a method of manufacturing a microstructure that requires a first material (6) and a second material (8) attached together and a laser system for producing a laser beam, the first material exhibiting an ablation threshold that does not exceed a predetermined ablation fluence of the laser beam and the second material exhibiting a second ablation threshold that exceeds the predetermined ablation fluence, a removal process comprises removing (16) a portion of the first material to leave a remnant thereof at an interface of the two materials and then, ablating (24) the remnant material using the laser beam at the predetermined ablation fluence to remove the remnant material. The process of selecting the first of the two materials is based on the predetermined ablation fluence of the laser beam, and the selection of a laser system is based on the respective ablation thresholds of the first and second materials.
Abstract:
A method is described for forming three-dimensional micro and nanostructures, based on the structuring of a body of material by means of a mould having an impression area which reproduces the said three-dimensional structure in negative form, characterized in that it comprises the operations of: - providing a mould comprising a substrate of a material which can undergo isotropic chemical etching, in which the said impression area is to be formed; defining an etching pattern on (in) the substrate, comprising a plurality of etching areas having zero-, uni- or bidimensional extension, which can be reached by an etching agent; and - carrying out a process of isotropic chemical etching of the substrate from the said etching areas for a corresponding predetermined time, so as to produce cavities which in combination make up the aforesaid impression area. This method is advantageously used in the fabrication of sets of microlenses with a convex three-dimensional structure, of the refractive or hybrid refractive/diffractive type, for forming images on different focal planes.
Abstract in simplified Chinese:制程包含接合半导体晶圆与无机晶圆。半导体晶圆不会让无机晶圆可穿透的光波长穿透。接合后,利用激光,在无机晶圆中形成破坏轨迹,激光发射光波长。利用蚀刻扩大无机晶圆的破坏轨迹,以形成贯通无机晶圆的孔。孔终止于半导体晶圆与无机晶圆间的界面。亦提供对象,包含半导体晶圆接合至无机晶圆。半导体晶圆不会让无机晶圆可穿透的光波长穿透。无机晶圆具有孔形成贯通无机晶圆。孔终止于半导体晶圆与无机晶圆间的界面。