161 results about "Channel electrode" patented technology

In accordance with one aspect of the invention, methods and systems are disclosed for delivering a stimulating signal by a stimulating medical device having a plurality of electrodes. Such methods and systems comprise receiving a signal; filtering the received signal to obtain a plurality of band pass filtered signals; delivering to each electrode of a first group of one or more electrodes, a first set of stimulation signals, wherein the first set of stimulation signals comprises stimulations signals for each of a first group of two or more band pass filtered signals; and delivering to each of electrodes of a second group of one or more electrodes, a second set of stimulation signals, wherein the second set of stimulation signals comprises stimulations signals for each of a second group of one or more band pass filtered signals; and wherein the first set of stimulation signals are delivered at a different effective stimulation rate than the second set of stimulation signals.

A high-density multichannel microwire electrode array is disclosed. The array can comprise a variable number of electrodes. A method of assembling the array is further disclosed. Additionally, a plurality of devices employing the array are disclosed, including an intelligent brain pacemaker and a closed loop brain machine interface.

The invention discloses a high-focusing-capability multi-channel transcranial direct current stimulation device and a control method thereof. The high-focusing-capability multi-channel transcranial direct current stimulation device comprises a transcranial direct current stimulation (tDCS) electrode array, a power source and control units, wherein channel electrodes in the electrode array are connected with the power source respectively through independent control units, polarity and current strength of the channel electrodes are respectively controlled through the independent control units, and the tDCS electrode array is integrated into an electrode cap mode. The high-focusing-capability multi-channel transcranial direct current stimulation device can complete automatic optimization of stimulation parameters of the channels according to stimulation positions and types specified by users, and finally generates stimulation meeting users' requirements. A tDCS system of the high-focusing-capability multi-channel transcranial direct current stimulation device has the advantages of being capable of covering the whole head, having high focusing capability and multiple channels and the like, and is accurate in stimulation position and customizable in complex stimulation.

A method and apparatus for synthesis of fullerenes and nanotubes in large quantities at an economical cost from graphite in electric arc plasma process are presented. Different embodiments of channeled graphite electrodes for both direct current (DC) and alternative current (AC) processes are disclosed. High productivity of the carbon allotropes is achieved by feeding consumable graphitic electrode into hot plasma zone, injecting of feedstock, catalyst and buffer gas flow through the longitudinal inner channel electrodes into the hot plasma zone and creating the radial gas outflow in the gap between electrodes, and following removal of produced carbon and catalytic vapors from the hot plasma zone into an oxygen deprived reaction vessel for quenching and condensing. Deposited after condensation soot containing carbon allotropes is collected and carbon allotropes are recovered by known techniques. The final products of recovering are fullerenes C60, C70 and higher fullerenes or nanotubes.

A coordinate measurement system including a coordinate indicating apparatus and a coordinate measurement apparatus for determining a position of a contact object including the coordinate indicating apparatus. The coordinate measurement apparatus includes a channel electrode unit including one or more electrodes, wherein capacitance of each of the one or more electrodes or capacitance between the one or more electrodes is changed based on a change in the position of the contact object, and a controller for applying an electrical signal to the channel electrode unit or measuring a reception signal input to the channel electrode unit. The coordinate indicating apparatus includes a conductive tip for forming capacitance with the one or more electrodes of the channel electrode unit, and a resonant circuit unit for generating identification information of the coordinate indicating apparatus, wherein the resonant circuit unit is connected to the conductive tip.

A linear voltage regulator has a regulating transistor with a first channel electrode receiving an input voltage source and a second electrode providing an output voltage. A control electrode of the regulating transistor is controlled by an error amplifying circuit based on comparison between a feedback signal of the output voltage and a reference voltage. An event detecting circuit is coupled to the input voltage source for detecting occurrence of a transient in the input voltage source. In response to the detected transient event, an enable controlling circuit generates an enable signal for determining an effective operation time of a voltage clamping circuit. During such effective operation time, a potential difference between the first channel electrode and the control electrode is limited within a predetermined clamp voltage for preventing the regulating transistor from being dramatically changed in operation.

The invention addresses a multi-channel induction accelerator with external channels, which in its broadest form includes an injector block, a drive system, a block of output systems, and a multi-channel induction accelerative block. The multi-channel induction accelerative block is formed of an aggregate of linear induction acceleration blocks (including those that are placed parallel one with respect to the other), each acceleration block being formed from a sequence of linearly connected acceleration sections. Each acceleration section comprises one or more magnetic inductors enveloped by a conductive screening. One or more inner accelerative channels are placed axially within the inner parts of the conductive screening and have one or more azimuthally oriented slits. One or more channel electrodes are connected electrically with different parts of the inner parts of the conductive screening that are separated by the slit.

A microfluidic system for creating encapsulated droplets whose shells can be further removed comprises: two electrode plates and a spacing structure disposed between the two electrode plates. One of the electrode plates has three reservoir electrodes and a plurality of channel electrodes. The three electrodes are respectively used for accommodating a shell liquid, a core liquid, and a removing liquid which is able to remove the shell liquid. The channel electrodes are used for communicating droplets among the three reservoir electrodes. Via these arrangements, the microfluidic system can create a quantitative shell droplet and a quantitative core droplet, and then merge the shell and core droplets to form an encapsulated droplet. Moreover, the shell of the encapsulated droplet can be removed by mixing it with the removing liquid. This invention is further provided with a method for creating an encapsulated droplet with a removable shell.

This invention relates to micro groove electrode, which has electrode and is characterized by the following: the groove electrode is composed of conductive flow and conductive hole needle inserted into conductive part. This invention is of simple structure and easy for processing with low cost and with even electricity field more than 100KV / cm suitable for processing large area field micro flow control analysis chip.

The invention discloses a self-restoring micro-fluid inertia power switch device, which comprises a gallium-indium metal liquid drop, a poly(N,N'-dimethylacrylamide) (PDMA) base, a glass cover board, a liquid drop storage pool, a rectangular micro-channel, a U-shaped micro-channel and metal electrodes, wherein the liquid drop storage pool, the U-shaped micro-channel and the rectangular micro-channel are arranged on a polymethyl methacrylate (PMMA) plate; the metal electrodes are bonded on the glass cover board; the gallium-indium metal liquid drop is initially located in the liquid drop storage pool; and when the inertia force on a switch is greater than the threshold of a passive valve, a metal liquid breaks through the passive valve and enters a micro-channel electrode, and the switch is connected. The liquid flows to a cutoff passive valve in the U-shaped micro-channel at most; when the inertia force disappears, a capillary force difference of the liquid exists between two ends of the micro-channel, so that the liquid automatically flows to the initial position, and the property of the switch is restored. The self-restoring micro-fluid inertia power switch device disclosed by the invention is simple in structure, stable and reliable in contact; and compared with an existing micro-fluid inertia switch, the switch has self-restoring capability, and can be used for a plurality of times.

The invention provides a novel graphene thin film transferring method and a preparation method of a sensor and relates to the technical field of graphene. The novel graphene thin film transferring method comprises the following steps: covering melted paraffin wax on the surface of a graphene thin film which is formed on the surface of a growth substrate; after the paraffin wax is cured, removing the growth substrate to obtain a paraffin wax / graphene composite thin film; putting the paraffin wax / graphene composite thin film on the surface of a target substrate; heating the target substrate until the paraffin wax is fitted to the target substrate and removing the paraffin wax by utilizing a solvent. The method provided by the invention takes the paraffin wax as a novel transferring medium and is convenient to operate; and the graphene thin film can be basically transferred in a lossless manner. The preparation method of the sensor comprises the following steps: a channel electrode is manufactured on the surface of the graphene thin film prepared using the transferring method and a pattern of a touch sensor is formed by the graphene thin film; and an optical adhesive is fitted on the surface of the graphene thin film and then de-foaming treatment is carried out. By adopting the method provided by the invention, the obtained graphene thin film is complete, basically has no loss and has large area, and can be used for manufacturing the sensor.

The invention discloses an ultrathin flexible capacitive touch sensor based on graphene. The sensor comprises an ultrathin flexible membrane, the ultrathin flexible membrane includes a surface a and a surface b; the surface a and the surface b are each provided with a channel electrode; a first conductive layer is arranged on the surface a, the first conductive layer is connected with a capacitive induction chip of a capacitive touch sensor through the channel electrode arranged on the surface a, the first conductive layer is formed by patterning one layer or multiple layers of graphene membranes; a first optical rubber layer is arranged on the surface of the first conductive layer; a second conductive layer is arranged on the surface b, the second conductive layer is connected with the capacitive induction chip of the capacitive touch sensor through the channel electrode arranged on the surface b, the second conductive layer is formed by patterning one layer or multiple layers of graphene membranes; and a second optical rubber layer is arranged on the surface of the second conductive layer.

The invention provides a novel magnetofluid electric generator without seeds. Conducting flow at the temperature ranging from three thousand DEG C to four thousand DEG C works in the magnetofluid electric generator and is gas ionized at high temperature. In order to conduct effective electric generation, on the basis that the conducting performance of the ionized gas cannot meet requirements, seeds, namely metal ions such as potassium and cesium are added; while, when airflow containing the metal ions passes through an electric generating channel in a high-intensity magnetic field at high speed and reaches an electrode, the electrode is corroded. Rapid corrosion of the electrode is the largest problem for the magnetofluid electric generator, and seed recycling problem also exists. Therefore, the novel magnetofluid electric generator without seeds solves seed adding and recycling problems, and avoids inconvenience caused by corrosion of the channel electrode.

An implantable medical device (IMD) can include implantable pulse generator (IPG) devices, implantable cardioverter-defibrillators (ICD), cardiac resynchronization therapy defibrillator devices, neurostimulators or combinations thereof. The IMD can also include a cardiac lead assembly in communication with the body assembly to transmit the at least one electrical signal to an anatomical structure. The cardiac lead assembly can include a first sleeve, which can have a distal end, a proximal end, and a surface therebetween. The surface can define a plurality of annular ribs along the distal end and can have a channel defined between each pair of adjacent ribs. An electrode can be coupled to the surface of the first sleeve adjacent to the distal end such that at least one channel is fillable with an adhesive to couple a second sleeve to the first sleeve.

The invention discloses a touch point positioning method for a self capacitance touch screen. The method comprises the following steps that S1, reference capacitance values and touch thresholds of each x channel electrode and Y channel electrode are initialized and updated; S2, the real-time capacitance value of each channel electrode of the self capacitance touch screen is detected, whether the touch occurs or not is judged, if the touch occurs, the step S3 is continuously executed, and otherwise, the current step is continuously executed; S3, a touch region is determined through being combined with the real-time capacitance value of each channel electrode; S4, a grading weighing algorithm is adopted for calculating the touch coordinate value of the touch region, so that a touch point is determined; S5, the reference capacitance value is updated on the channel electrode which is not touched. The method has the advantages that the isolated noise point interference near the touch point can be filtered away, the touch point calculation and positioning accuracy is improved, the stability is higher, in addition, the calculation quantity is low, the positioning efficiency is high, and the method can be widely applied to the application field of the self capacitance touch screen.

An apparatus and method for treating sleep apnea comprising an external, low voltage electrical stimulator that provides between 5 to 25 milliamps connected to electrodes imbedded located over the first and third intercostals or the third and fifth intercostals. The stimulator is designed to provide a current to the electrodes that stimulated one of the two pairs of intercostals for 59 seconds, rest for 4 seconds and then repeats the cycle throughout the night after the user has fallen asleep. The stimulator includes a main power switch and two amplitude control switches (also called amplitude control switches), a main control switch, an adustable delay activation timer switch, a power timer switch, an amplitude lock switch, two channel electrode wire plugs, an LCD display, and a battery pack. Prior to use, the amplitude control switches adjusted and lock at an amplitude needed to cause contraction. of the intercostals assigned to the channel. The patient then connects the electrode wires to the intercostals electrodes and activates the stimulator.

A solid oxide fuel cell having a multichannel electrode architecture and method for preparing the same, the method including forming a first carbon laden composition, including a first thermoplastic binder, into a rod, applying a first zirconia laden composition, including a second thermoplastic binder, onto the rod to form a composite feed rod, extruding the composite feed rod to form a controlled geometry filament, bundling the extruded composite feed rod to form a multicellular feed rod, extruding the multicellular feed rod to form a multicellular rod, cutting the multicellular rod into multicellular discs, applying a zirconia laden material to one surface of a multicellular discs to form a multicellular structure, and heating processing the multicellular structure. The fuel cell is completed by adding anode and cathode materials to the multicellular structure.

A magnetic bead-based digital microfluidic immunoanalysis device and a method thereof are provided, which includes a lower plate, an upper plate disposed above the lower plate, a separating structure therebetween and a magnet disposed on the upper plate or the lower plate. The lower plate includes a first electrode layer including a plurality of channel electrodes with different sizes. A droplet containing few magnetic beads is adapted to be disposed on the lower plate and corresponding to the channel electrodes. The magnet attracts the magnetic beads to approach to the smaller one of the channel electrodes though a magnetic force, and when a voltage is applied to the first electrode layer, the droplet is divided to a detection portion with the magnetic beads and a waste-liquid portion without the magnetic beads respectively corresponding to the smaller one and the larger one of the channel electrodes through a dual-direction electrowetting-on-dielectric force.

The invention discloses a flexible biological pH sensor based on nano wire texture and a preparation method thereof. The pH sensor comprises a flexible substrate, a micro channel electrode structure, an electrode lead, a nano wire texture sensitive layer, and an ion selectively penetrating membrane. Two opposite channel structures composed of electrodes are prepared on the flexible substrate through a template method. The electrodes are connected to the exterior through leads. A textured nano wire material is prepared in the channel areas of electrodes and is taken as the pH sensitive layer. The ion selectively penetrating membrane is covered on the surface of electrodes. The nano wire sensitive material is arranged on the substrate, the channel is composed of two electrodes, the electrodes are completely covered by the ion selectively penetrating membrane, the problems that an inorganic nonmetal nano wire is easily worn in a flexible wearable sensor and can be disturbed are solved, and the in-situ real-time measurement and analysis of human fluid pH value is realized.

The fusion reactor of the invention comprises a plurality of elongated triangular electrodes aligned in a cylindrical shape to form an axially symmetric containment geometry. The electrodes are separated by means of electrical insulator preferably pure swept Quartz (SiO2). The Triangular electrodes, are made out of very high electro conductive, high strength, heat resistant, radiation resistant and neutrons moderating material such as thorium carbide, uranium carbide or silicon carbide or the like which is preferably made by ceramic powder metallurgy process. Each electrode includes a cooling structure or flow channel formed in the internal structure allowing for a cooling fluid for extracting heat caused by plasma and nuclear reactions. The acceleration channels electrodes of the fusion reactor are of triangular shape and are protected with a continuously changing protective film or layer of high electro-conductive fissile or fertile material such as thorium carbide or uranium carbide. Lithium may be added for the reactor to breed its own Tritium.

The invention discloses a portable multi-channel electrochemical detection system including a USB power supply module, a system power module, a STM32 microcontroller, an in-chip DAC module, a currentcollecting module, a voltage exciting module, a multi-channel electrode interface, an SD card storage circuit, a Bluetooth transmission module and a smart phone. The smart phone is in communicationalconnection with the STM 32 microcontroller through the Bluetooth transmission module. Through the Bluetooth transmission module, the smart phone can control the system and receives data for displaying, so that system operation becomes simpler and more convenient. At the same time, since man-machine interaction of the system is not conducted through keys and liquid crystal display modules, the sizeis reduced. Besides, since the system adopts multi-channel detection, multi-element detection requirement of more scenes can be met.

The invention is suitable for the technical field of touch screen detection and provides a capacitive touch screen detection method. The method comprises the following steps: a touch chip performs scanning detection on each channel electrode in sequence to obtain a first capacitance value of each channel electrode; the touch chip simultaneously performs scanning detection on a first channel electrode and a second channel electrode which form a pair of self-capacitive coupling electrodes in sequence to obtain a second capacitance value of each channel electrode; the touch chip sends the first capacitance value and the second capacitance value of each channel electrode to a detection device; and the detection device calculates and determines whether a touch screen is a non-defective product or not. According to the capacitive touch screen detection method, the detection efficiency and stability of the touch screen in a production process are improved, the detection errors caused by artificial subjective judgment errors are avoided, and the manufacturing and maintenance costs of a detection jig in production are reduced.