摘要:
A device for transferring electrical charge between a first element and a second element is provided. The elements have relative rotational motion therebetween. The device has a body including a multiplicity of electrically conductive fibers. A substantial portion of the fibers extend in a substantially parallel direction, parallel to a first axis. The body includes a first contact area. The body defines an aperture therein. The body further includes a second contact area on the periphery of the aperture spaced from the first contact area. The first contact area is for contact with the first element and the second contact area is for contact with the second element.
摘要:
A device for transferring electrical charge from an electrically conductive element to a rotating element is provided. The device has a body including a pultruded composite member having a multiplicity of electrically conductive fibers provided with a polymer matrix. The plurality of conductive fibers is oriented within the polymer matrix in a longitudinal direction of the pultruded composite member. The fibers each extend in a substantially parallel direction, parallel to a first axis. The body includes a first contact area. The body defines an aperture therein. The body has a second contact area on the periphery of the aperture spaced from the first contact area and a support. The support is secured to the body for supporting the body. The first contact area is for contact with the conductive element and the second contact area is for contact with the rotating element. The fibrillated portion is coincident with at least one of the first contact area or said second contact area.
摘要:
Disclosed herein is an electrical component comprising a segment having a diameter in the range of about 1 micrometers to about 10 cm, the segment comprising a plurality of non-metallic, resistive fibers in a non-metallic binder. The segment is precisely trimmed to impart to the segment an electrical resistance within 1% of the desired resistance value. A manufacturing system and methods of manufacturing components having precise specifications also are disclosed.
摘要:
An electrical component including a substrate comprising an electroconductive filler in a first polymeric binder, and a coating layer adhered to at least a portion of the substrate surface, the coating layer comprising a nanostructured electroconductive particulate dispersed in a polymeric binder, such as an epoxy resin. A method of making the component also is described.
摘要:
Exemplary embodiments provide composite materials, methods for making and processing these materials, and systems for using the composite materials. The disclosed composite material (or composite member) can include fiber-like and/or particulate materials incorporated within a binder polymer. For example, the composite member can include fibril-shaped, semi-conductive elements that are contained in a suitable binder polymer to achieve a particular resistance value, wherein the fibrils can be integrated and interlinked in a manner as to create an array of resistive elements that precisely define and control current flows through the related device. The composite member can therefore have resistive characteristics and, none or neglectablely low amount of capacitive or inductive characteristics. The composite member can be used in electric test market, e.g., as high performance, dynamic probes/sensors for very frequency and/or complex mixed-frequency signals.
摘要:
Exemplary embodiments provide precision resistive composite members and methods for manufacturing and using them. The resistive composite member can have controllable dimensions, geometric shapes, mechanical properties and resistance values. The resistive composite member can be used for high-performance sensors or instrument probes that require, for example, high contact pressure, ultra-high frequency, and/or enable state-of-the-art digital signal transmission, characterization, or measurement. The resistive composite member can include one or more “twisted-fiber-tow” or one or more arrays of “twisted-fiber-tow” contained in a suitable non-metallic or essentially non-metallic binder material. The “twisted-fiber-tow” can further include a number of fibers that are twisted individually and/or in bundles in order to control the mechanical properties and fine-tune the resistance of the resistive composite member and thus to customize the high-performance instrument probes.
摘要:
Exemplary embodiments provide precision resistive composite members and methods for manufacturing and using them. The resistive composite member can have controllable dimensions, geometric shapes, mechanical properties and resistance values. The resistive composite member can be used for high-performance sensors or instrument probes that require, for example, high contact pressure, ultra-high frequency, and/or enable state-of-the-art digital signal transmission, characterization, or measurement. The resistive composite member can include one or more “twisted-fiber-tow” or one or more arrays of “twisted-fiber-tow” contained in a suitable non-metallic or essentially non-metallic binder material. The “twisted-fiber-tow” can further include a number of fibers that are twisted individually and/or in bundles in order to control the mechanical properties and fine-tune the resistance of the resistive composite member and thus to customize the high-performance instrument probes.
摘要:
Disclosed herein is an electrical component comprising a segment having a diameter in the range of about 1 micrometers to about 10 cm, the segment comprising a plurality of non-metallic, resistive fibers in a non-metallic binder. The segment is precisely trimmed to impart to the segment an electrical resistance within 1% of the desired resistance value. A manufacturing system and methods of manufacturing components having precise specifications also are disclosed.
摘要:
A fluid jet based micromachining device and method include a workpiece, and fluid jets directing synchronized forces at the workpiece so as to converge forces at a dynamic contact zone on the workpiece and provide mechanical support to the workpiece during periods of contact with the fluid jets.
摘要:
Disclosed herein is an electrical component including a substrate comprising an electroconductive filler in a first polymeric binder, and a coating layer adhered to at least a portion of the substrate surface, the coating layer comprising a nanostructured electroconductive particulate dispersed in a polymeric binder, such as an epoxy resin. A method of making the component also is disclosed, comprising obtaining a substrate containing an electroconductive filler in a polymeric binder, dispersing a nanostructured electroconductive particulate filler in a liquid that includes a solvent and/or a reactive diluent to form a dispersion, mixing the dispersion with a liquid resin to form a coating mixture, applying the coating mixture to the substrate, and crosslinking the applied coating mixture to form the coated substrate.