Abstract: A homo-material heterophased quantum well includes a first structural layer, a second structural layer and a third structural layer. The second structural layer is sandwiched between the first and third structural layers. The first structural layer, second structural layer and third structural layer are formed by growing atoms of a single material in a single growth direction. The energy gap of the second structural layer is smaller than that of the first and third structural layers.

Abstract: A non-contact vital sign sensing system including a vital sign sensing module and at least one body movement interference cancellation module is provided. The vital sign sensing module and the at least one body movement interference cancellation module are under a self-injection locking (SIL) mode. The vital sign sensing module senses an isotropic vital sign of a body. A mutual injection locking (MIL) mode is achieved between the vital sign sensing module and the at least one body movement interference cancellation module to sense the anisotropic body movement signal and to cancel the body movement interference.

Abstract: A method for forming a conductive film at room temperature is provided and includes steps of: adding AgNO3 into a first solution of dodecanoic acid; dropping n-butylamine and a diluted aqueous solution of a reducing agent into the first solution in turn, so as to initially obtain the dodecanoate-protected silver nanoparticles as a capping ligand; then using cyclohexane as a solvent to apply the silver nanoparticles onto a surface of a substrate to form a patterned film of silver nanoparticles; and finally immersing the substrate into a high concentrated aqueous solution of a reducing agent to chemically reduce the patterned film of silver nanoparticles into a conductive silver film. Thus, a patterned film or circuit can be conveniently and rapidly formed, and the silver nanoparticles can be applied to flexible substrates with low material cost and temperature sensitivity.

Abstract: A frequency synthesizer and a frequency synthesis method thereof are provided. The frequency synthesizer includes a phase-locked loop unit, a voltage-controlled oscillating unit, and a frequency mixing unit. The phase-locked loop unit receives a reference signal and a feedback injection signal and generates a first oscillating signal according to the reference signal and the feedback injection signal. The voltage-controlled oscillating unit receives the feedback injection signal and generates a second oscillating signal according to the feedback injection signal. The frequency mixing unit is coupled to the phase-locked loop unit and the voltage-controlled oscillating unit, receives the first oscillating signal and the second oscillating signal, and mixes the first oscillating signal and the second oscillating signal to generate the feedback injection signal and an output signal.

Abstract: The present invention relates to an injection-locked RF receiver having trifilar transformer splitter. The injection-locked RF receiver includes a trifilar transformer splitter, an injection-locked oscillator and a phase detector. The trifilar transformer splitter includes a primary winding, a secondary winding and a tertiary winding. RF input signal is input to the primary winding. The secondary winding outputs a first differential signal to the injection-locked oscillator. The tertiary winding outputs a second differential signal to the phase detector. Using the trifilar transformer splitter of the invention, the frequency-shift keying demodulation with high sensitivity is achieved, and the number of amplifier can be reduced so as to lower the power consumption of the injection-locked RF receiver and reduce the complexity of the involved system.

Abstract: A manufacturing method for three-dimensional GaN epitaxial structure comprises a disposing step, in which a substrate of LiAlO2 and a source metal of Ga are disposed inside an vacuum chamber. An exposing step is importing N ions in plasma state and generated by a nitrogen source into the chamber. A heating step is heating up the source metal to generate Ga vapor. A growing step is forming a three-dimensional GaN epitaxial structure with hexagonal micropyramid or hexagonal rod having a broadened disk-like surface on the substrate by reaction between the Ga vapor and the plasma state of N ions.

Abstract: The invention provides a method for patterning a polymer surface. A polymer layer is formed on a substrate. A conductive grid with a mesh pattern is placed on the polymer layer. The mesh pattern is transferred to the polymer layer by a plasma treatment. The conductive grid is then removed.

Abstract: An engine structure having a conjugate cam assembly is provided and includes a piston which can be used to push or pulled by the conjugate cam assembly mounted on a camshaft through a connection rod, a roller rocker and two rollers. The conjugate cam assembly has two cams with cam profiles and relative arrangement angle which can be varied according to actual operational desire, so as to vary the ratio of intake/exhaust strokes and the ratio of compression/power strokes. Thus, the combustion efficiency and the exhaustion efficiency can be enhanced. When the camshaft finishes four strokes of an operational cycle, the camshaft only rotates one circle (i.e. 360 degree), so that the rotation speed of the camshaft can be lowered.

Abstract: The invention relates to a sulfur-containing compound and the preparation thereof. The invention also relates to the uses of the sulfur-containing compound in inhibiting inducible nitric oxide synthase and/or cyclooxygenase-2 and in treating the diseases associated with inducible nitric oxide synthase and/or cyclooxygenase-2. This invention also describes a series of chemical analogues of the said sulfur-containing compound and the preparation of these compounds.

Abstract: A motion/vibration sensor includes a transmit/receive antenna unit, an oscillation unit and a frequency-mixing unit. The transmit/receive antenna unit receives an output signal from the oscillation unit and transmits a detection signal toward at least one object. The detection signal is reflected by the object as a reflected detection signal and received by the transmit/receive antenna unit. The oscillation unit receives the reflected detection signal from the transmit/receive antenna unit for self-injection locking; and the frequency-mixing unit receives the reflected detection signal from the transmit/receive antenna unit for frequency demodulation. The frequency-mixing unit mixes and demodulates the reflected detection signal from the transmit/receive antenna unit with the output signal from the oscillation unit into a baseband output signal which represents a motion/vibration information.

Abstract: A motion/vibration detection system and method therefore are provided. The system includes a transmitter and a receiver. The transmitter includes a transmit/receive antenna unit and a first oscillator. The receiver includes a receiving unit and a demodulation unit. The transmit/receive antenna unit receives an output signal from the first oscillator and transmits a detection signal. The detection signal is reflected from at least one object under detection into a reflected detection signal, which is received by the transmit/receive antenna unit. The transmit/receive antenna unit injects the reflected detection signal into the first oscillator and accordingly the first oscillator is under a self-injection locking mode. The receiving unit receives the detection signal. The demodulation unit demodulates the detection signal received by the receiving unit into a baseband output signal, to extract at least one motion/vibration information of the objection under detection.

Abstract: A method for manufacturing an optical fiber includes melting an end of a crystal material and drawing the molten end of the crystal material to form a crystal filament. Conductive paint is coated on two surface sections of the crystal filament to form internal positive and negative electrodes not electrically connected to each other. The crystal filament is placed into a heat resistant tube that is heated until an outer layer of the crystal filament melts and adheres to an inner periphery of the heat resistant tube, with a center of the crystal filament remaining as a solid core. Conductive paint is adhered to two ends of the crystal filament to form external positive and negative electrodes electrically connected to the internal positive and negative electrodes, respectively. The optical fiber thus formed can serve as a photoelectric optical fiber for transmission of current signals.

Abstract: An III-nitride quantum well structure includes a GaN base, an InGaN layer and an InGaN covering layer. The GaN base includes a GaN buffering layer, a GaN post extending from the GaN buffering layer, and a GaN pyramid gradually expanding from the GaN post to form a mounting surface. The InGaN layer includes first and second coupling faces. The first coupling face is coupled with the mounting surface. The GaN covering layer includes first and second coupling faces. The first coupling face of the GaN covering layer is coupled with the second coupling face of the InGaN layer. A method for manufacturing the III-nitride quantum well structure and a light-emitting unit having a plurality of III-nitride quantum well structures are also proposed.

Abstract: A radiation pattern insulator and an antennae system thereof are proposed. The radiation pattern insulator includes a dielectric substrate and a plurality of radiation pattern insulation elements. The dielectric substrate allocated between a plurality of antennae includes a top surface and a bottom surface, and a normal direction of the dielectric substrate is substantially perpendicular to propagation directions of electromagnetic waves radiated from the antennae. In addition, the radiation pattern insulation elements are allocated on the top surface or the bottom surface of the dielectric substrate, or alternatively, all allocated on the top surface and the bottom surface.

Abstract: A wireless detection apparatus includes an antenna, a voltage control oscillator, and a processing unit. The antenna receives a first wireless signal and generates an electrical signal according to the first wireless signal. The first wireless signal is generated by reflecting a second wireless signal from an object under test. The voltage control oscillator is coupled to the antenna to generate an oscillating signal under an interference of the electrical signal. The oscillating signal varies with variation of the electrical signal. The processing unit is coupled to the voltage control oscillator to evaluate a parameter of the object under test according to the variation of the oscillating signal.

Abstract: A communication device includes a system circuit board, a ground plane, a first antenna, a second antenna, a first metal element, and a second metal element. The ground plane is disposed on the system circuit board. The first metal element is substantially located between the first antenna and the second antenna. The first metal element is coupled to the ground plane such that a system ground plane is formed. The second metal element is adjacent to the first metal element and substantially located between the first antenna and the second antenna. The second metal element is coupled to the system ground plane. The first antenna, the second antenna, and the first metal element are substantially located at an edge of the system circuit board.

Abstract: A manufacturing method for a Zinc Oxide (ZnO) piezoelectric thin-film with high C-axis orientation comprises the steps of providing a substrate having a base, a SiO2 layer and a Si3N4 layer; forming a bottom electrode layer on the Si3N4 layer; patterning the bottom electrode layer; sputtering a Zinc Oxide layer on the Si3N4 layer and the bottom electrode layer; forming a photoresist layer on the Si3N4 layer and the Zinc Oxide layer; patterning the photoresist layer to reveal the Zinc Oxide layer; forming a top electrode layer on the Zinc Oxide layer and the photoresist layer; removing the photoresist layer and the top electrode layer formed on the photoresist layer, and the top electrode layer formed on the Zinc Oxide layer can be remained; and patterning the Si3N4 layer to form a recess that reveals the base of the substrate.

Abstract: A portable detection system for allergic diseases includes a filtration-based inspection module and a reader module. The filtration-based inspection module includes an FPW sensor and a liquid sample filtration apparatus, wherein the liquid sample filtration apparatus includes an injection opening, a passage module, a filtering membrane and a gathering aperture. The injection opening is in communication with the gathering aperture. The FPW sensor comprises a frame body, a carrier and a sensing chip having an accommodating slot in communication with the gathering aperture. The carrier comprises a plurality of conductive terminals, and the conductive terminals are electrically connected with the sensing chip. The reader module comprises a connection slot capable of being inserted by the conductive terminals of the carrier.

Abstract: An RF sensing circuit with a voltage-controlled oscillator comprises a low noise amplifier (LNA), a voltage-controlled oscillator (VCO), a frequency demodulating unit, a bandpass filter (BPF) and a digital signal processing unit. The VCO has an injection signal input port and a voltage input port, wherein the injection signal input port is electrically connected with an output of the LNA. The frequency demodulating unit is electrically connected with an output of the VCO and the BPF is electrically connected with an output of the frequency demodulating unit. The digital signal processing unit is electrically connected with an output of the BPF and the voltage input port of the VCO.

Abstract: A radiation pattern insulator and an antennae system thereof are proposed. The radiation pattern insulator includes a dielectric substrate and a plurality of radiation pattern insulation elements. The dielectric substrate allocated between a plurality of antennae includes a top surface and a bottom surface, and a normal direction of the dielectric substrate is substantially perpendicular to propagation directions of electromagnetic waves radiated from the antennae. In addition, the radiation pattern insulation elements are allocated on the top surface or the bottom surface of the dielectric substrate, or alternatively, all allocated on the top surface and the bottom surface.