Abstract: An epitaxial structure with a tunnel junction, a p-side up processing intermediate structure and a manufacturing method thereof are provided. The epitaxial structure includes: a substrate, a first n-type semiconductor layer, a tunnel junction layer, a p-type semiconductor layer, a multiple quantum well layer and a second n-type semiconductor layer, wherein the first n-type and p-type semiconductor layers and the tunnel junction layer together form a p-type semiconductor structure. The manufacturing method of the p-side up processing intermediate structure includes disposing a permanent substrate on the second n-type semiconductor layer to form a laminated structure, flipping the laminated structure upside down and removing the substrate of the epitaxial structure, thereby resulting in the p-type semiconductor structure being disposed facing up.

Abstract: A transistor includes a semiconductor channel layer, a gate structure, a gate insulation layer, an internal electrode, and a ferroelectric material layer. The gate structure is disposed on the semiconductor channel layer. The gate insulation layer is disposed between the gate structure and the semiconductor channel layer. The internal electrode is disposed between the gate insulation layer and the gate structure. The ferroelectric material layer is disposed between the internal electrode and the gate structure. A spacer is disposed on the semiconductor channel layer, and a trench surrounded by the spacer is formed above the semiconductor channel layer. The ferroelectric material layer is disposed in the trench, and the gate structure is at least partially disposed outside the trench. The ferroelectric material layer in the transistor of the present invention is used to enhance the electrical characteristics of the transistor.

Abstract: An angle adjustment mechanism for LED bar lighting includes a lamp body, two end covers arranged two ends of the lamp body along an axial direction thereof, two lamp frames respectively mounted on the two threading pipes, two wheel gears respectively fixed on the two lamp frames, two outer end caps fixed and covered on the two end covers, respectively, and at least two stopping plates respectively received in the two lamp frames. Each of the two end covers includes a threading pipe extending along the axial direction of the lamp body. Each of the two wheel gears includes a plurality of gear teeth taken along a radial direction thereof and rotating around the threading pipe. Each of the stopping plates provides at least one stopping tooth which is coupling to the gear teeth.

Abstract: A fuel nozzle for a combustor of a gas turbine engine includes a body defining an axial direction and a radial direction, an air passageway defined axially in the body, and a fuel passageway defined axially in the body radially outwardly from the air passageway. The fuel passageway has an outer wall including an exit lip at a downstream portion of the outer wall. The exit lip has a surface treatment including a swirl-inducing relief. A gas turbine engine and a method of inducing swirl in at least one of pressurised fuel and air exiting a fuel nozzle of a gas turbine engine are also presented.

Abstract: A device providing an automatic channel changing function includes: a receiving unit, receiving recommended program data, first user data and second user data from a first AV playing device; a storage unit, storing reference data; a look-up unit, generating channel changing data according to the recommended program data, the first user data, the second user data and the reference data; and a transmitting unit, transmitting the channel changing data to a second AV playing device according to the second user data.

Abstract: The present invention disclose a printed antenna, so as to increase power and a frequency band width of an antenna. The printed antenna includes a printed circuit board, an antenna pattern, and a signal feed-in point, where the antenna pattern is printed on a front surface of the printed circuit board, and the antenna pattern includes a first antenna pattern, a second antenna pattern, and a third antenna pattern; the signal feed-in point is connected to the second antenna pattern; one end of a side, of the first antenna pattern is connected to the second antenna pattern; the second antenna pattern is vertically laid out in parallel to an edge of the printed circuit board; and the third antenna pattern includes a first part and a second part, and the first part and the second part are arranged in parallel in the non-closed rectangle.

Abstract: A surgical instrument with pressure sensing and vision feedback functions has an instrument body and a piezochromic device. The instrument body includes a work piece with a visible surface. The piezochromic device is disposed on the visible surface of the work piece of the instrument body and performs color change when the piezochromic device senses pressure. Therefore, when a doctor performs surgery using the surgical instrument, the doctor can directly see the piezochromic device. When the piezochromic device contacts other surgical instruments or presses organs or tissues within a patient's body, the piezochromic device will change color when the piezochromic device senses the pressure enabling the doctor to adjust the surgical instrument accordingly.

Abstract: An adjustable dual-lens device for 3D stereoscopic surgical microscopes has an outer casing, an image set, and an adjusting set. The image set is mounted in the outer casing and has two lenses. The lenses are pivotally mounted in the outer casing at a spaced interval. The adjusting set is mounted in the outer casing and has two adjusting units. Each adjusting unit has a driving motor, a cam, and a limiting element. The driving motor is mounted in the outer casing adjacent to one of the lenses and has a driving shaft. The cam is eccentrically mounted around the driving shaft and is pressed against the lens that is adjacent to the driving motor. The limiting element is connected to the outer casing and the corresponding lens to enable the corresponding lens to press against the cam.

Abstract: The valve has a pair of mutually rotatable ceramic valve bodies within the bonnet that cooperate to allow a flow of water in one relative position and to block a flow of water in a second relative position. One valve body is engaged by the valve stem to rotate therewith while the second valve body is held fixed within the bonnet via radial projections that fit into recesses in the bonnet. An elastomeric ring of square cross-section is squeezed against the non-rotatable valve body by a spiral retaining ring that is positioned in a circumferential groove in the bonnet.

Abstract: An adjustable light source device for a stereoscopic surgical microscope has a circuit board and multiple light sources. The circuit board is mounted in an outer casing of the stereoscopic surgical microscope and is electrically connected to a host computer of the stereoscopic surgical microscope. The light sources are electrically mounted on the circuit board at spaced intervals around two objective lenses of the stereoscopic surgical microscope and extend out of the outer casing. Each one of the light sources has a wavelength different from wavelengths of the other light sources and is controlled to emit light by an operating set of the stereoscopic surgical microscope via a program processing interface of the host computer sending signals to the circuit board. The adjustable light source device can emit lights with different wavelengths to enable the stereoscopic surgical microscope to capture clearer images for various surgical divisions.

Abstract: A lightweight 3D stereoscopic surgical microscope has a body, a robot set, an image set, and an operating set. The body has a wheel seat, a housing mounted on the wheel seat, and a host computer mounted in the housing. The robot set is connected to the body and has a base mounted on the housing, a transversal lever mounted on the base, a lifting arm connected to the transversal lever, and a rotating arm connected to the lifting arm. The image set is connected to the robot set and has an outer casing connected to the rotating arm, at least one objective lens mounted in the outer casing, a main display screen mounted on the outer casing, an auxiliary display screen mounted beside the body. The operating set is connected to the robot set, is connected to the body and the image set and has two operating bars.

Abstract: An improved structure of pressure gauge includes a bottom case, a pressure measurement assembly, a rotating assembly, a fulcrum piece, a coil spring, a scale meter, and an outer case. The pressure measurement assembly is installed above the bottom case and the surface thereof is shaped with concentric circular waves. The rotating assembly includes a sleeve body and a central rod. A fulcrum piece is installed across between the sleeve body and the central rod. A plurality of through holes and a coil retaining base are provided on the fulcrum piece. One end of the coil spring is screwed onto the coil slot and the other end thereof is installed on the coil retaining base. The outer case is located in the outer area of the bottom case and the fulcrum piece. A transparent cover body is installed on top of the outer case.

Abstract: A fuel nozzle for a combustor of a gas turbine engine includes a body defining an axial direction and a radial direction, a primary air passageway centrally defined axially in the body, and a plurality of concentrically-arranged nozzle tip projections disposed at a downstream portion of the body. Each of the plurality of nozzle tip projections has a radially inwardly facing fuel filming surface communicating with respective fuel passages. The fuel filming surfaces are disposed radially outwardly of an outlet of the primary air passageway. A method for delivering fuel from a fuel nozzle of a combustor of a gas turbine engine is also presented.

Abstract: A method of inducing swirl in pressurized air flowing through an air passageway of a fuel nozzle of a gas turbine engine includes inducing swirl in the pressurized air at an exit of the air passageway, by directing the pressurised air through helicoidal grooves formed at a downstream end of the air passageway. The swirling pressurized air exiting the air passageway is then directed into a mixing zone at a downstream end of the fuel nozzle.

Abstract: An LED light source apparatus includes a lamp housing, a lighting module, and a lens. The lamp housing has a first shell body, a second shell body, and a waterproof pad disposed between the first and second shell bodies. The first shell body and the second shell body are covered to each other. The second shell body has an opening. The waterproof pad is provided with a throughhole corresponding to the opening. A light guide flap is disposed on the perimeter of the opening of the second shell body. The lighting module is disposed inside the lamp housing corresponding to the opening. The lens is installed on a side of the lamp housing corresponding to the lighting module. Therefore, the components or the lighting module with a different power can be conveniently replaced by modules and thus the present invention has the flexibility in replacement and maintenance.

Abstract: A piezoelectric energy harvester has a box, a plurality of first arc-shaped metal stands and a plurality of arc-shaped piezoelectric elements. The box has an upper portion, a connection base, a buffer element and a lower portion. The connection base situates between the upper portion and the lower portion. The upper portion movably connects with the lower portion through the buffer element. The plurality of first arc-shaped metal stands situated on a side of the connection base in the box. Each of the arc-shaped piezoelectric elements locates on each of the first arc-shaped metal stands. When an external force applied on the box, the plurality of first arc-shaped metal stands deforms due to the compression from the upper portion and consequently causes the deformation of the arc-shaped piezoelectric elements for generating electricity accordingly.

Abstract: A multi-channel wavelength division multiplexing/demultiplexing device includes optical filters for respective optical channels, and at least one microlens. The optical filters guide a light beam to travel along a preset optical path, and each optical filter filters a specific and different range of wavelength, and has a first surface for incident and reflective light, and a second surface for outgoing light through penetration as an output beam for the corresponding channel. Each microlens is installed between two adjacent optical filters to adjust optical beam shape of the traveling light along the optical path, particularly, altering a beam waist of a Gaussian beam and an imaging position to greatly increase optical efficiency of collimators for the whole system.

Abstract: A viewing record processing circuit includes: a sensor, receiving a remote control signal; a decoder, decoding the remote control signal to a digital command code; an instruction module, generating a plurality of channel selection instructions according to the digital command code; a viewing list generating module, generating a viewing list according to the channel selection instructions, the viewing list including multiple viewing records; a sorting module, sorting the multiple viewing records in the viewing list to generate a sorted viewing list; and a compression module, compressing the sorted viewing list to generate a compressed viewing list.

Abstract: A magnetic sensing switch includes switch body having a hollow tube and an opening. A magnetic reed switch is disposed in the tube and includes two conductive points. The plug having an elastic clamping force is fixed in the opening by interference fit. The plug including a sealant injection portion and a retaining portion communicating with the tube. The two wires are inserted in the tube, one end of each wire is connected to one conductive point, and the other end passes through the retaining portion to protrude out of the tube. A sealant is injected into the tube via the sealant injection portion to entirely wrap the magnetic reed switch and the wires inside the tube, and the sealant partially protrudes out of the sealant injection portion.