摘要:
Methods and systems for attaching a device to a substrate for operation of the device under variable conditions includes attaching a device to a substrate, disposing a removable material over a first portion of the device, positioning a second portion of the device adjacent to the substrate, operably attaching a retainer to the substrate adjacent to the device with a part of the retainer disposed over the removable material, and removing the removable material to form a gap between the device and the retainer so that the device is retained on the substrate, and wherein the gap allows the device to move freely relative to the retainer and the substrate in response to changes in temperature.
摘要:
An electron beam lithography machine (10) comprises a base structure in the form of a plinth (14), a plurality of legs (22), which preferably include pneumatic damping elements (23), for supporting the plinth relative to a support surface (24), the legs defining a support plane (A) for the plinth, an electron beam column (11) carried by the plinth and a stage (17, 18) arranged in a vacuum chamber at the plinth to be movable substantially parallel to the support plane and to carry a workpiece (13) to be acted on by an electron beam generated by the column. The centre of gravity (25) of the stage, which can be movable along X and Y axes of a co-ordinate system of the machine, is disposed in or adjacent to the support plane so that a reaction force to the stage movement is oriented in the support plane or in an adjacent, parallel plane.
摘要:
A power divider for a waveguide between a single electromagnetic microwave generator input and two output ports, the divider including two tuner networks, each comprising a moveable capacitive probe with a pair of fixed flanking inductive posts.
摘要:
The different advantageous embodiments provide an apparatus and method comprising a substrate configured to increase an intensity of light at a desired wavelength. The substrate has a front side, a back side, and an outer edge. The substrate is configured to reflect the light received on the front side of the substrate. The substrate comprises ceramic. The substrate comprises a plurality of sections. The method and apparatus also comprise a material configured to attenuate the light passing between the plurality of sections. The material surrounds an edge of each section of the plurality of sections. The apparatus and method also comprise a cooling system configured to allow liquid nitrogen to be transmitted through the cooling system and receive heat generated in the substrate from the back side of the substrate.
摘要:
An apparatus support (11) with a damping characteristic comprises a rigid reinforcing component, in particular a steel plate (19), encapsulated by a body (16) of compliant material, particularly a composite of particulate mineral material and synthetic binder. The plate (19) defines an opening (19a) at spacing from the upper side of the body (16) and a mounting ring (21) is embedded in the body so as to be disposed at least partly above the opening. The ring (21) has a peripheral flange (21a) which is spaced from the plate (19) and from the upper side of the body and overlaps the plate in vertical projection. Material of the body is thus disposed above the flange (21a) and also sandwiched between the flange and the plate so that a damping zone is present around the ring both above and below the flange.
摘要:
An apparatus support structure (11) with a damping characteristic comprises a rigid steel frame resistant to loading in bending and tension, a cladding (16) encapsulating the frame, and an apparatus mounting ring (21). The cladding is formed by a solidified composite casting material which is based on particulate mineral or metallic material, for example, granite, and a synthetic binder, for example epoxy resin, and which has a compliance permitting damping of movement transmitted between the structure and apparatus mounted on the ring (21). The structure can be produced by encasing the frame and ring in a mould constructed in situ around the frame and filing the mould with the cladding material in fluid state.
摘要:
The image stability of electrophoretic media, comprising a plurality of particles disposed in a fluid and capable of moving through the fluid upon application of an electric field to the medium, can be improved by including in the fluid either a polystyrene or an aggregating diblock copolymer which forms micelle-like structures in the fluid, the diblock copolymer having a first block soluble in the fluid and a second block not swellable by the fluid. In variable transmission electrophoretic media, haze can be reduced by using as the fluid a mixture of a partially hydrogenated aromatic hydrocarbon and a terpene.
摘要:
An I-beam curing device having microwave waveguides with slots on the broad side thereof. The flanges of the I-beam pass through the slots in the waveguides to be subject to the microwave fields therein so as to allow the treating of any material passed through the slots.
摘要:
A device for influencing an electron beam, in particular a beam deflector (10), comprises a cylindrical support body (11) with an axial passage (12) through which the beam can propagate and axially spaced sets of coils (14) supported by the body and operable by electrical energy to produce electromagnetic fields for deflection of the beam. The device includes a cooling system for counteracting temperature rise in the body (11) due to operation of the coils (14). The system comprises a pipe (15) of compliant material extending helically around and thermally conductively coupled, preferably adhesively bonded, to the support body (11) and serving to conduct liquid coolant for heat exchange with the body (11) over substantially all the external circumferential surface thereof. The cooling system further includes a pump (16) for conveying the coolant through the pipe (15) in a generally laminar flow so that, in conjunction with the flow path and pipe material, generation of vibrations is largely avoided and any vibrations that are generated are absorbed by the pipe (15) rather than transmitted to the body (11).