Abstract: A novel surface acoustic wave device with a decreased velocity dispersion and a low insertion loss as well as the fabrication method therefore is provided. The surface acoustic wave device includes a substrate, an insulating layer with an indentation on the substrate, a silicon layer divided by an etched window with a first portion on the insulating layer and a second portion suspended above the indentation, a piezoelectric layer on the first and the second portions of the silicon layer, and at least an electrode on the piezoelectric layer.

Abstract: A circuit apparatus for driving a light emitting diode with a low voltage is disclosed. The circuit apparatus includes an NPN transistor, a PNP transistor, a capacitor connected to a base of the NPN transistor, a resistor connected to a contact point between the base of the NPN transistor and the capacitor and connected to the power, and an inductor connected to the power ground and a collector of the PNP transistor.

Abstract: A novel surface acoustic wave device with a decreased velocity dispersion and a low insertion loss as well as the fabrication method therefor is provided. The surface acoustic wave device includes a substrate, an insulating layer with an indentation on the substrate, a silicon layer with a first portion on the insulating layer and a second portion suspended above the indentation, a piezoelectric layer on the first and the second portions of the silicon layer, and at least an electrode on the piezoelectric layer.

Abstract: A novel surface acoustic wave device with a decreased velocity dispersion and a low insertion loss as well as the fabrication method therefor is provided. The surface acoustic wave device includes a substrate, an insulating layer with an indentation on the substrate, a silicon layer with a first portion on the insulating layer and a second portion suspended above the indentation, a piezoelectric layer on the first and the second portions of the silicon layer, and at least an electrode on the piezoelectric layer.

Abstract: A detecting device for biochemical detections is provided. The detecting device includes a first substrate, a magnetic layer located on the first substrate, an isolation layer located on the magnetic layer, at least a first electrode located on the isolation layer, a first dielectric layer located on the first electrode, a first hydrophobic layer located on the first dielectric layer, a second substrate, at least a second electrode located on the second substrate and having a cathode and an anode, a second dielectric layer located on the second electrode' and a second hydrophobic layer located on the second dielectric layer. The first electrode is zigzag-shaped, and the cathode and the anode of the second electrode are comb-shaped and interlaced with each other.

Abstract: A novel surface acoustic wave device with a decreased velocity dispersion and a low insertion loss as well as the fabrication method therefor is provided. The surface acoustic wave device includes a substrate, an insulating layer with an indentation on the substrate, a silicon layer with a first portion on the insulating layer and a second portion suspended above the indentation, a piezoelectric layer on the first and the second portions of the silicon layer, and at least an electrode on the piezoelectric layer.

Abstract: A detecting apparatus for a lamp is disclosed. The detecting apparatus includes a central processing unit for receiving a spectrum signal and converting the spectrum signal into a digital signal, a converter for converting the digital signal to an analog signal, a controller for receiving the analog signal and generating an operating signal, and an amplifier for receiving the operating signal and outputting a voltage signal to activate the lamp, wherein the spectrum signal is analyzed and differentiated such that an operating condition for the lamp is obtained.

Abstract: A non-contact voltage detecting method and device are provided. The non-contact voltage detecting device includes a discharge lamp having an excitation voltage and a lighting voltage applied thereon, a boost circuit coupled to the discharge lamp for providing an operation voltage to the discharge lamp and a switch circuit coupled to the boost circuit for providing a periodical high-low signal level to control the boost circuit wherein the discharge lamp flickers if there is a relatively high voltage power nearby, while the discharge lamp is extinguished without the relatively high voltage power nearby. In addition, the device is capable of being an illumination source by increasing an input voltage of the boost circuit when it is not used for detecting the high voltage power.

Abstract: A detecting apparatus for a lamp is disclosed. The detecting apparatus includes a central processing unit for receiving a spectrum signal and converting the spectrum signal into a digital signal, a converter for converting the digital signal to an analog signal, a controller for receiving the analog signal and generating an operating signal, and an amplifier for receiving the operating signal and outputting a voltage signal to activate the lamp, wherein the spectrum signal is analyzed and differentiated such that an operating condition for the lamp is obtained.

Abstract: The present invention discloses a driver for amplifying an operating voltage of a low driving-voltage luminary. The driver includes a driving circuit providing a first signal, and a negative multiple voltage circuit electrically connected to the driving circuit and the luminary respectively for transforming the first signal into a second signal to be transmitted to the luminary, thereby the luminary being driven in response to the second signal. The luminary circuit is connected between power source (Vdd) and the negative multiple voltage circuit.

Abstract: The sensitivity adjusting equipment applied to a photoelectric smoke detector is provided. The photoelectric smoke detector includes a luminous component for providing an input light and a detecting component for receiving an even output light. The sensitivity adjusting equipment includes a light-scattering device having a scattering component and an adjustable hole for scattering the input light evenly and adjusting an intensity of the input light so as to output the even output light to the detecting component. The sensitivity adjusting equipment also includes a movable platform having a first brace connected to the photoelectric smoke detector and a supporting base having a second brace connected to the light-scattering device. The movable platform is moved to make the photoelectric smoke detector and the light-scattering device combined to adjust the sensitivity of the photoelectric smoke detector.

Abstract: A device for driving a light-emitting element via three transistors includes a driving circuit, a negative voltage circuit, and a protection circuit. The driving circuit has a first transistor and a second transistor for producing a first signal. The negative voltage circuit electrically connected to the driving circuit for transforming the first signal into a second signal to be transmitted to the light-emitting element, and the light-emitting element is driven in response to an operating voltage resulted from the voltage of the second signal and a power voltage. The protection circuit includes a third transistor having two terminals connected to the light-emitting element and the third terminal connected to a base of an NPN transistor for controlling the operating voltage so as to stabilize an output of the light-emitting element.

Abstract: The present invention provides a method for measuring both magnetic and electric fields of a DUT via an electro-optic probing technique at the same time. Also, the present invention provides a method for measuring both electric and magnetic fields via a magneto-optic probing technique simultaneously. The method utilizes the modulation of the position of a probe to measure the electric and magnetic field signals. The DC and AC components of the modulated electric (or magnetic) field signals can be obtained by means of a low pass filter and a lock-in amplifier, respectively. Through a simple calculation, the electric and magnetic field can be obtained simultaneously.

Abstract: A sensitivity adjusting equipment applied to a photoelectric smoke detector is provided. The photoelectric smoke detector includes a luminous component for providing an input light and a detecting component for receiving an even output light. The sensitivity adjusting equipment includes a light-scattering device having a scattering component and an adjustable hole for scattering the input light evenly and adjusting an intensity of the input light so as to output the even output light to the detecting component. The sensitivity adjusting equipment also includes a movable platform having a first brace connected to the photoelectric smoke detector and a supporting base having a second brace connected to the light-scattering device. The movable platform is moved to make the photoelectric smoke detector and the light-scattering device combined to adjust the sensitivity of the photoelectric smoke detector.

Abstract: The present invention provides a method for measuring both magnetic and electric fields of a DUT via an electro-optic probing technique at the same time. Also, the present invention provides a method for measuring both electric and magnetic fields via a magneto-optic probing technique simultaneously. The method utilizes the modulation of the position of a probe to measure the electric and magnetic field signals. The DC and AC components of the modulated electric (or magnetic) field signals can be obtained by means of a low pass filter and a lock-in amplifier, respectively. Through a simple calculation, the electric and magnetic field can be obtained simultaneously.

Abstract: A light emitting element driver composed of two transistors, one ground resistor, one inductance and one capacitor is disclosed, and it can drive a LED with a supplied voltage as low as about 0.92 V.

Abstract: A preparation for forming a thin film capacitor includes forming an amorphous ferroelectric film, such as barium strontium titanate [(Ba,Sr)TiO3] film, for use as an interface between a metal electrode and a polycrystalline ferroelectric film, such as (Ba,Sr) TiO3 film. The polycrystalline ferroelectric film serves as a dielectric layer of the thin film capacitor in view of the fact that the polycrystalline ferroelectric film has a high dielectric constant. The amorphous ferroelectric film serves as a buffer layer for inhibiting the leakage current of the thin film capacitor. The amorphous ferroelectric film is grown by sputtering and by introducing a working gas, such as argon, and a reactive gas, such as oxygen, into a reaction chamber in which a plasma is generated at room temperature.

Abstract: A multiple-type pump has a simple construction and superior durability. The multiple-type pump has the capacity to perform air evacuation at high velocities in the atomospheric pressure zone to high vacuum zone range. The multiple-type pump includes: a screw type pump air transfer portion arranged at a downstream portion of the outer surface of a rotor and has a plurality of screw threads and screw grooves with a width of 5 mm or more; a turbo-molecular type pump air transfer portion arranged at an upstream portion and has a plurality of vanes and air transfer grooves; vanes having vane widths of 3 mm or less at the upstream edge, and formed so that the downstream edge is continuous with the upstream edge of the screw threads; a downstream edge of the base of the air transfer grooves formed so as to be continuous with the upstream edge of the base of the screw grooves.

Abstract: This invention discloses an in-situ monitoring method on the layer uniformity of sputter coatings in a vacuum chamber based on deconvolution of measuring plasma emission spectra. The method of the present invention started from an Ar-normalized Sr intensity distribution derived from deconvoluting the plasma spectra by using Abel inversion method, which was considered as the spatial distribution of the sputtering mass of the source target. The thickness profile on the substrate was then calculated with n-th power of cosine law model. It was observed good agreement between the calculated thickness profile based on spectroscopic measurement and experimental observation. The film uniformity for the same sputter conditions can be monitored by comparing in-situ measurement of Ar-normalized Sr intensity distribution with the standard curve, or by directly calculating thickness distribution on the substrates.

Abstract: The present invention disclose a method for measuring a thermal expansion coefficient of a thin film, in which the thin film is first deposited on two substrates having different thermal expansion coefficients under the same conditions. For each of the two deposited substrates, a relationship between the thin film stresses and the measuring temperatures is established by using a phase shifting interferometry technique, in which the stresses in the thin films are derived by comparing the deflections of the substrates prior to and after the deposition. Based on the two relationships the thermal expansion coefficient, and elastic modulus, E f ( 1 - v f ) , can be calculated, wherein Ef and &ngr;f are the Young's modulus and Poisson's ratio of the thin film, respectively.