550 results about "Conductive filament" patented technology

Method and apparatus for control of ablation energy and electrogram acquisition through multiple common electrodes in an electrophysiology catheter. A device that routes ablation energy to and that routes mapping signals received from an electrophysiology catheter having a plurality of conductive filaments including circuitry that provides, for each conductive filament when ablation energy is being delivered, an electrical signal path that has a low impedance for ablation energy and a high impedance for mapping signals. The device also includes circuitry that provides, for each conductive filament, when mapping signals are being received, an electrical signal path that has a high impedance for ablation energy and low impedance for mapping signals. At least one switch is provided that selectively groups electrodes into sectors for delivery of ablation energy.

A bipolar conforming electrode catheter has a plurality of flexible filaments or bristles forming a brush electrode for applying therapeutic energy (e.g., RF energy) to target tissue to form spot or continuous linear lesions. Interstitial spaces are defined among the filaments of the brush electrode. The interstitial spaces are adapted to direct conductive or nonconductive fluid, when present, toward the distal ends of the filaments. The brush electrode facilitates electrode-tissue contact in target tissue having flat or contoured surfaces. The flexible filaments may be selectively trimmed to give a desired tip configuration or a desired standoff distance between the tissue and the conductive filaments in the brush electrode. The filaments may be grouped into clusters. The catheter includes a dispersive return electrode for bipolar function.

A printed 3D functional part includes a 3D structure comprising a structural material, and at least one functional electronic device is at least partially embedded in the 3D structure. The functional electronic device has a base secured against an interior surface of the 3D structure. One or more conductive filaments are at least partially embedded in the 3D structure and electrically connected to the at least one functional electronic device.

A planar coil including and insulating substrate, and a coil conductive filament having a thickness of 20 to 400 mum and formed on at least one surface of the insulating substrate, the coil conductive filament having a gap whose aspect ratio (H/G) is at least 1. The coil conductive filament has a cross-section in a substantially mushroom shape having a head and a neck, the head has a width (L) which is a least twice as large as a width (l) of the neck thereof, at most 1.5 times as large as a height of the head, and at least twice as large as a minimum spacing (G) between adjacent coil conductive filaments.

A brush electrode catheter and a method for using the brush electrode catheter for tissue ablation are disclosed. The brush electrode catheter comprises a plurality of flexible filaments or bristles for applying ablative energy (e.g., RF energy) to target tissue during the formation of spot or continuous linear lesions. Interstitial spaces are defined among the filaments of the brush electrode, and the interstitial spaces are adapted to direct conductive or nonconductive fluid, when present, toward the distal ends of the brush filaments. The brush electrode facilitates electrode-tissue contact in target tissue having flat or contoured surfaces. The flexible filaments may be selectively trimmed to give a desired tip configuration or a desired standoff distance between the tissue and the conductive filaments in the brush electrode. Also, the filaments may be grouped into clusters. A shielded-tip brush electrode, including a flexible boot, is also disclosed.

A printed stretchable strain sensor comprises a seamless elastomeric body and a strain-sensitive conductive structure embedded in the seamless elastomeric body. The strain-sensitive conductive structure comprises one or more conductive filaments arranged in a continuous pattern. A method of printing a stretchable strain sensor comprises depositing one or more conductive filaments in a predetermined continuous pattern into or onto a support matrix. After the depositing, the support matrix is cured to embed a strain-sensitive conductive structure in a seamless elastomeric body.

A brush electrode and a method for using the brush electrode for tissue ablation are disclosed. The brush electrode comprises a plurality of flexible filaments or bristles for applying ablative energy (e.g., RF energy) to target tissue during the formation of spot or continuous linear lesions. Interstitial spaces are defined among the filaments of the brush electrode, and the interstitial spaces are adapted to direct conductive or nonconductive fluid, when present, toward the distal ends of the brush filaments. The brush electrode facilitates electrode-tissue contact in target tissue having flat or contoured surfaces. The flexible filaments may be selectively trimmed to give a desired tip configuration or a desired standoff distance between the tissue and the conductive filaments in the brush electrode. Also, the filaments may be grouped into clusters. A shielded-tip brush electrode, including a flexible boot, is also disclosed.

A multi-component conductive yarn which includes a primary component and a secondary component. The primary component consists of at least one elongated filament formed of polymeric material while the secondary component consists of a blend of polymeric material and carbon nanotubes. The secondary component is bonded with the primary component along its length. The carbon nanotubes comprise up to 20% of the secondary component. The conductive yarn comprises no more than 10% carbon nanotubes.

Integrated circuit nonvolatile memory devices are manufactured by forming a variable resistance layer on an integrated circuit substrate. The variable resistance layer includes grains that define grain boundaries between the grains. Conductive filaments are formed along at least some of the grain boundaries. Electrodes are formed on the variable resistance layer. The conductive filaments may be formed by implanting conductive ions into at least some of the grain boundaries. Moreover, the variable resistance layer may be a variable resistance oxide of a metal, and the conductive filaments may be the metal. Related devices are also disclosed.

A lamp string structure for emitting light within wide area includes a first conductive wire and a second conductive wire parallel with each other, and at least one lighting element located between the first and second conductive wires. The lighting element has a first conductive filament and a second conductive filament electrically connected to the first and second conductive wires respectively. The lighting element is encased by a package body which has an insulation holding layer to hold the lighting element and an insulation covering layer connected to the insulation holding layer to cover the lighting element. The insulation holding layer and insulation covering layer are light transparent. Thus the lighting element can emit light radially without being constrained by light emission angles and also dissipate heat generated by the lighting element during light emission to reduce heat accumulation.

A method of temperature swing adsorption allows separation of a first fluid component from a fluid mixture comprising at least the first fluid component in an adsorptive separation system having a parallel passage adsorbent contactor with parallel flow passages having cell walls which include an adsorbent material and axial thermally conductive filaments in direct contact with the adsorbent material. The method provides for transferring heat from the heat of adsorption in a countercurrent direction along at least a portion of the filaments during adsorption and transferring heat in either axial direction along the filaments to provide at least a portion of the heat of desorption during a desorption step. A carbon dioxide TSA separation process to separate carbon dioxide from flue gas also includes steps transferring heat from adsorption or for desorption along axial thermally conductive filaments.

An electrically conductive fiber and a coupled biomedical sensor are described. An electrically conductive core of the fiber includes a multiplicity of synthetic conductive filaments and an outer nonconductive fiber layer. The sensor area of the electrically conductive fiber is coated by thin film of silver ink and thin film of silver-silver chloride ink. The electrically conductive fiber's porous surface contacts the thin silver ink coating and the silver coating contacts the silver-chloride ink coating. A surface of the biomedical sensor is coated by a thick film of ionically conductive media, containing an electrolyte, in contact with the silver-chloride coating. The electrolyte diffuses into a porous structure of electrically conductive yarn.

Provided is an alkali metal cell comprising: (a) a quasi-solid cathode containing about 30% to about 95% by volume of a cathode active material, about 5% to about 40% by volume of a first electrolyte containing an alkali salt dissolved in a solvent, and about 0.01% to about 30% by volume of a conductive additive wherein the conductive additive, containing conductive filaments, forms a 3D network of electron-conducting pathways such that the quasi-solid electrode has an electrical conductivity from about 10⁻⁶ S/cm to about 300 S/cm; (b) an anode; and (c) an ion-conducting membrane or porous separator disposed between the anode and the quasi-solid cathode; wherein the quasi-solid cathode has a thickness from 200 m to 100 cm and a cathode active material having an active material mass loading greater than 10 mg/cm².

A resistance RAM that is provided with an oxide layer and a solid electrolyte layer, and a method for operating the same are provided. The resistance RAM comprises a first electrode, an oxide layer that is formed on the first electrode, a solid electrolyte layer that is disposed on the oxide layer, and a second electrode that is disposed on the solid electrolyte layer. The method comprises the step of forming a conductive tip in the oxide layer by applying reference voltage to any one of the electrodes of the resistance RAM, applying foaming voltage to the remain one, such that the oxide layer is electrically broken. A conductive filament is formed in the solid electrolyte layer by applying a positive voltage to the second electrode on the basis of the voltage that is applied to the first electrode. The conductive filament that is formed in the solid electrolyte layer is removed by applying a negative voltage to the second electrode on the basis of the voltage that is applied to the first electrode.

The invention relates to an antistatic, conductive and electromagnetic shielding textile and a preparation method thereof, being characterized in that fiber filament is firstly processed by electroless plating copper in a way of continuous proceeding and then processed by electrolytic tinning to prepare conductive filament; then, the conductive filament is cut into conductive short fiber which is processed by pure spinning or blend spinning with other common textile fibers to be made into yarn, and the antistatic, conductive and electromagnetic shielding textile can be prepared by fabric manufacture as well as dyeing and finishing; or the conductive short fiber is blended with other common textile fibers and then processed into non-weaving cloth by pinprick or spunlace. The textile prepared by the invention has beautiful appearance and soft feel, and is safe to the skin.

The invention provides a resistive random access memory and a manufacturing method thereof. The memory comprises a lower electrode, a local control electrode located on the lower electrode, a storage medium layer located on the lower electrode and the local control electrode, and an upper electrode located on the storage medium layer. Through the local control electrode located on the lower electrode, local electric field intensity in the storage medium is enhanced, so formation of conductive filaments along the control electrode is facilitated, so that the formation and disconnection of the conductive filaments are effectively controlled, thereby the programming voltage discrete problem caused by the random formation of the conductive filaments is solved, so the concentricity of a programming voltage of a device is facilitated, and the working stability of the device is improved.