81 results about "Electric field" patented technology

An apparatus for protecting a nontarget body tissue of a patient during electrocautery surgery, an electrocautery probe being adapted to provide an electrical field to electrocauterize a target body tissue of the patient, includes a stent. The stent is adapted to detect the electrical field and to produce a field proximity signal in response to the detected electrical field. An electrical source provides electrical power to the probe. An electrical controller is adapted to receive the field proximity signal and to regulate electrical power to the probe in response to the field proximity signal. A method for protecting a nontarget body tissue of the patient during electrocautery surgery is also described.

The present invention provides systems, apparatus and methods for selectively applying electrical energy to body tissue. A device is provided having an enclosure within an outer wall formed from an electrically-permeable material to allow for electrical energy to pass from the interior of the enclosure through the outer wall. The device further includes an electrode positioned within the interior of the enclosure and a fluid passage coupled to the enclosure for delivery of an electrically conductive fluid into the interior of the enclosure such that the electrically conductive fluid couples the electrode with the electrically-permeable section of the outer wall. The conductive fluid allows for the passage of electrical energy from the electrode through the fluid and the outer wall of the enclosure for treatment of tissue on or in a patient. In this manner, the electrode does not directly contact the tissue of the patient, which reduces the potential for collateral tissue damage or necrosis and/or excessive electric fields in the tissue.

The plasma processing apparatus includes main electrodes 5, 31 opposed to each other with a plasma processing space 15 interposed therebetween. The plasma processing apparatus further has a side electrode 6 opposed to side faces 5B-1, 5B-2 of the main electrode 5, as well as a side electrode 32 opposed to side faces 31B-1, 31B-2 of the main electrode 31. Therefore, in addition to the plasma processing space 15 between the main electrode 5 and the main electrode 31, an electric field can be formed in spaces between the side faces of the main electrodes 5, 31 and the side electrodes 6, 32, the spaces serving as predischarge areas 16-1, 16-2. By this electric field, processing gas present in the predischarge areas 16-1, 16-2 can be transformed into plasma. Electrons and excitation species of the plasma generated in these predischarge areas 16-1, 16-2 can be supplied directly to the plasma processing space 15.

This invention provides a kind of display device with a touch input function; the display device includes the dock, display panel, sensor plate and the light source. Display panel is installed on the dock.The display panel has a driving circuit layer including plural light sensor components. Sensor plate with interface and underside is installed at the side of the display panel, thereinto the underside looking towards the display surface of display panel. Light source is installed along the edge of the sensor plate, and launch into the sensor plate. When the contact surface in the state of no touching interface, the light in contact with a total reflection on interface and underside; when a specific location of the contact surface in the state of contact interface, the specific location of contact surface will scatter parts of light penetrating underside to arrive components. This invention can be carried out more input and fingerprint recognition, without the impact from the environment of electric field, improves the accuracy of sensors.

The invention discloses a power semiconductor device and a manufacturing method thereof. The power semiconductor device comprises a substrate, a core forming layer, a buffer layer, a channel layer, a barrier layer, a source electrode, a drain electrode, a grid electrode and a junction termination structure located on the barrier layer. The junction termination structure extends in the direction from the edge, close to one side of the drain electrode, of the grid electrode to the drain electrode. Due to the piezoelectric effect caused by lattice constant difference between the junction termination structure and the barrier layer under the junction termination structure, two-dimensional electronic gas at the position of the interface of the barrier layer and the channel layer is partially exhausted. The junction termination structure can effectively improve the electric field distribution of the barrier layer so as to improve the breakdown voltage of the device.

In an antenna apparatus, two pattern antennas are arranged side by side in an area close to a ground conductor layer on a surface of a dielectric substrate, in such a manner as to be formed substantially line-symmetrical with each other. Each of the pattern antennas includes a radiation element having a feed coupler, a mutual coupler, and a feed element fed by a high frequency circuit unit. An open end of the radiation element is located near the ground conductor layer. The feed element and the feed coupler are capacitively coupled with each other, whereby the radiation element is excited. At the excitation, the mutual couplers that extend substantially in parallel with and close to each other are capacitively coupled with each other, and hence, polarization planes of the electric fields radiated from the radiation elements can be made orthogonal to each other.

A liquid crystal display device of so-called an In-Plane Switching mode in which an electric field substantially parallel to substrates is applied to a liquid crystal layer by applying a voltage between a pixel electrode and a common electrode is disclosed. In the liquid crystal display device, a source line is overlapped with a part of a common electrode with an insulation film interposed therebetween. The insulation film has a plurality of layers of insulation films.

An EUV mirror arrangement (100) has a multiplicity of mirror elements (110, 111, 112) which are arranged alongside one another and jointly form a mirror surface of the mirror arrangement. Each mirror element has a substrate (120) and a multilayer arrangement (130) applied on the substrate and having a reflective effect with respect to radiation from the extreme ultraviolet range (EUV), said multilayer arrangement comprising a multiplicity of layer pairs (135) having alternate layers composed of a high refractive index layer material and a low refractive index layer material. The multilayer arrangement has an active layer (140) arranged between a radiation entrance surface and the substrate and consisting of a piezoelectrically active layer material, the layer thickness (z) of which active layer can be altered by the action of an electric field. For each active layer provision is made of an electrode arrangement for generating an electric field acting on the active layer.

The present invention relates to a method of treating or improving rheumatism and pain caused by rheumatism, tumor, and spinal damage of mammalian animals by a non-pharmacological method. Extremely low AC electric field with DC electric field overlapped is exposed to a whole or a part of mammalian animals with electrodes in a non-contact state. In the exposure of the above mentioned electric field, said electric field is exposed for a certain period of time a day, repeating this everyday or once a week. Further, as required, frequency of the electric field, voltage to be applied, exposure time, and the like are controlled.

The invention relates to a bistable composite film of polymer dispersed liquid crystals and a manufacturing method thereof. The composite film is composed of two pieces of flexible transparent conducting film and a layer of polymer dispersed liquid crystals, wherein, the two pieces of flexible transparent conducting film are etched with a coplanar conversion electrode; the layer of polymer dispersed liquid crystals is highly active polyurethane acrylic ester; the liquid crystals are nematic phase liquid crystal molecules with large birefringence. When imposing a coplanar horizontal electric field, the bistable composite film of the polymer dispersed liquid crystals is in closed and scattering state and still keeps the scattering state after the electric field is eliminated; when imposing a coplanar comb-shaped electrode short-circuit on an opposite electric field, the bistable composite film of the polymer dispersed liquid crystals is in open and transparent state and still keeps the transparent state after the electric field is eliminated. The bistable composite film of the polymer dispersed liquid crystals has the manufacturing method that: after being mixed, the highly active polymer and the nematic phase liquid crystals with the large birefringence are separated to form the structure that the polymer wraps crystal liquid droplets. The invention uses the simple design proposal and depends on changing the direction of the electric field to realize zero field stability of the polymer dispersed liquid crystals so as to further acquire an electronic-paper technology with better energy conservation; or the bistable composite film of polymer dispersed liquid crystals can be specially applied to the fields of building decoration and jewelry counters and so on as a dimming function film which is clipped in glass.

A view-angle-switchable liquid crystal display device comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate is provided with a view angle control electrode, a common electrode is arranged on the second substrate, and a plurality of sub-pixels are defined by scanning lines and data lines on the second substrate; a thin film transistor and a pixel electrode are arranged in each sub-pixel. Each pixel electrode comprises at least one first electrode part and at least one second electrode part connected with the first electrode part. Each first electrode part comprises a plurality of first electrode strips, each second electrode part comprises a plurality of second electrode strips, and the first electrode strips and the second electrode stripsare perpendicular to each other. A view angle control voltage is applied to the view angle control electrode, so that a voltage difference is generated between the view angle control electrode and thecommon electrode; a vertical electric field is formed in the region of the corresponding sub-pixels between the two substrates, so that liquid crystal molecules deflect under the action of the vertical electric field, and the liquid crystal display device can be switched between a wide view angle and an omni-directional narrow view angle.

The invention provides an insulated gate bipolar transistor (IGBT) with a floating buried layer, belonging to the power semiconductor device technology field. According to the invention, based on a traditional IGBT device structure, a drift region with a first conductive type is introduced with one or more layers of continuous or incontinuous second conductive type floating buried layers, through a modulation effect of introduced space charge and additional electric field of the second conductive type floating buried layer, new electric field peak is introduced into the drift region of the first conductive type, and with a same device drift region thickness, breakdown voltage of an IGBT device is substantially raised; with certain breakdown voltage, an IGBT device drift region thickness can be substantially reduced, thus forward conduction voltage drop and shutoff time of the device are substantially reduced. Simultaneously, with an effect of introduced space charge of the floating buried layer, avalanche breakdown in device shutoff can be inhibited, and dynamic breakdown voltage and reverse direction safety operation area of the IGBT device are improved.

The invention discloses a probe antenna for terahertz waveband near-field imaging and specifically relates to surface metallized coating on a narrow edge of an antenna on the basis of polymethyl methacrylate (PMMA) material manufacture. The antenna comprises a terahertz signal couple input part, a terahertz resonant cavity and a PMMA surface metallized thin film coating layer. The antenna inputs a terahertz signal via a waveguide radiator, changes the transmission mode of the terahertz signal and further effectively changes terahertz electric-field radiation, thereby achieving the aim of terahertz near-field scanning imaging. The technical field of terahertz electronic devices is related. The probe antenna of the invention has the characteristics of having a simple structure, being easy to machine and manufacture and making it easy to perform couple operation with terahertz standard waveguide. The output power and the efficiency of the probe antenna of the invention are significantly superior to those of existing terahertz near-field scanning antennas. The probe antenna has wide market prospects in terms of material defect detection and material composition identification.

The invention belongs to the technical field of ferroelectric memories and particularly relates to a non-volatile ferroelectric memory with high read current and an operation method thereof. Each storage unit of the non-volatile ferroelectric memory is of an in-plane capacitor structure or up-down capacitor structure; polarization directions of ferroelectric materials are respectively vertical to electrodes; when enough large write voltage opposite to an electric domain polarization direction of a ferroelectric is applied to the two electrodes, ferroelectric domains in the corresponding regions of the electrodes are inversed from the polarization direction along an electric field direction, the electric domain polarization direction between the electrodes is opposite to the peripheral ferroelectric domain polarization direction, a domain wall is formed between the two electric domains, and the domain wall is usually an electric channel; when information is read, the read current of the electric channel is directly proportional to the perimeter of the electric domain wall, the longer the perimeter of the electric domain wall is, the larger the read current is. According to the ferroelectric memory of the invention, the read current in the storage unit can be improved to be helpful for improving the read speed of data and the reliability.

The invention belongs to the field of natural organic chemistry, and relates to a method for extracting and separating oligomeric proanthocyanidin. According to the method, at first, high-voltage pulse electric field extraction equipment is used to extract proanthocyanidin, and then a centrifuge, ultrafilter membrane equipment, and macroporous adsorption resin are adopted to purify oligomeric proanthocyanidin to obtain a high-quality oligomeric proanthocyanidin product. The provided preparation method has the following advantages: (1) the high-voltage pulse electric field technology can make the extracting solvent enter the plant cells more easily, and thus the high efficient extraction of proanthocyanidin is achieved; (2) a centrifuge, ultrafilter membrane equipment and macroporous adsorption resin are co-used to purify the oligomeric proanthocyanidin, and the purifying effect is better, compared with the technology that only uses macroporous adsorption resin. The prepared proanthocyanidin is widely used in the fields of healthcare food and cosmetics.

The present invention relates generally to microtiter plate format devices and methods for separating molecules having different net charges. The devices and methods of the invention are particularly suited for use in high-throughput screening to monitor enzymatic reactions which result in a product having an altered net charge. For example, the systems and methods disclosed herein may be used to detect the activity of phosphatases, proteases and kinases on various peptidic substrates under various conditions.

A display device includes a light scattering layer to scatter light from a light emitter. The light scattering layer includes a liquid crystal layer between a first electrode and a second electrode. The liquid crystal layer includes cholesteric liquid crystals which scatter light from the light emitter based on an intensity of an applied electric field.

The invention relates to a preparation method of a tunneling oxidation passivation PERC battery with selective contact with an emitter junction; the preparation method comprises the following steps that a silicon wafer is subjected to single-side texturing, and a tunneling oxidation layer SiO2 and a P-doped polycrystalline silicon layer are prepared on the texturing surface to form an N+ emittingjunction; selective etching is carried out to remove the P-doped polycrystalline silicon layer wound on the back surface, and a front phosphorus-doped polycrystalline silicon layer is activated, and selective doping is carried out on the surface of the emitter junction; an AL2O3 layer is deposited on the back surface of the silicon wafer, and a hydrogenated amorphous silicon nitride passivation antireflection layer is deposited on the front surface and the back surface of the silicon wafer separately; selective patterning and film opening are carried out on the back surface passivation layer;and silk-screen printing is performed on a back surface aluminum electric field, a back electrode and a front surface metal electrode grid line to form front and back electrode metalized ohmic contact. Compared with the prior art, the preparation method disclosed by the invention has the advantages that the emitter junction surface compounding of the existing single-crystal PERC battery is improved, and the Voc of the battery is greatly improved; and the method is compatible with an existing PERC mass production path and is a key development direction of a next-generation high-efficiency single-crystal PERC battery.

An electrode for use in a reduced pressure region in a mass spectrometer whereby the electrode is subject to deposition of dielectric (non-conducting) substances thereon, which can cause unstable performance of the mass spectrometer. The surface portion of the electrode that is for providing an equipotential boundary of an electric field for influencing charged particles is made rough, in contrast to the prior art of providing a polished surface. The rough surface provides projections and cavities, which may have a regular or irregular occurrence, which it has been found significantly reduces the deposition of dielectric substances from the charged particles thereon. A preferred structure is for a rod electrode (42) to have a screw thread (44) formed thereon whereby the thread crests (43) along the rod electrode provide projections (43) and the thread roots (45) provide cavities.

A placing device and a method for placing objects onto substrates are suited for obtaining both very small as well as very large placement forces of the object exerted on the substrate. To this end, a gripper, by way of which the object can be picked up, is pretensioned with regard to a holder in a direction of placement. The pretensioning ensues via a first coupling element provided on the holder and via a second coupling element provided on the gripper. An electrical and/or magnetic field is generated between the first and the second coupling element and effects an action of force between the holder and the gripper. This enables a predetermined placement force to be attained when using the gripper to place the object.