Abstract: An electric power tool includes a motor, a lifter, a firing pin, an electromagnet, a driving circuit, a latch, and a controller. The lifter is driven by the motor to drive the firing pin to perform a firing action. The driving circuit provides electric current to excite the electromagnet. The latch is moved by the electromagnet from a blocking position where the latch blocks the firing pin to move in a firing direction to a non-blocking position where the latch does not block the firing pin when the electromagnet is in an excited state. The controller, during an excitement period, controls the driving circuit to provide constant current for a first time period to excite the electromagnet to the excited state, and provide pulsating current for a second time period to keep the electromagnet in the excited state.

Abstract: A multi-spray RRC process with dynamic control to improve final yield and further reduce resist cost is disclosed. In one embodiment, a method, includes: dispensing a first layer of solvent on a semiconductor substrate while spinning at a first speed for a first time period; dispensing the solvent on the semiconductor substrate while spinning at a second speed for a second time period so as to transform the first layer to a second layer of the solvent; dispensing the solvent on the semiconductor substrate while spinning at a third speed for a third time period so as to transform the second layer to a third layer of the solvent; dispensing the solvent on the semiconductor substrate while spinning at a fourth speed for a fourth time period so as to transform the third layer to a fourth layer of the solvent; and dispensing a first layer of photoresist on the fourth layer of the solvent while spinning at a fifth speed for a fifth period of time.

Abstract: A method of fabricating a thin film with a varying thickness includes the steps of providing a shadow mask with an opening, providing a carrier plate, arranging a substrate on the carrier plate, and coating the substrate through the opening whilst rotating the carrier plate relative to the shadow mask. A plurality of zones of the substrates is swept and exposed from arcuate portions of the opening per each turn by a plurality of predetermined exposure times, respectively. The varying thickness of the thin film corresponds to variation of the predetermined exposure times.

Abstract: An optical displacement sensing system is provided. With configuration of an optical sensor disposed on a displacement platform and in cooperation with a broadband light source and an optical spectrum analyzer, when the displacement platform moves, the waveguide grating of the optical sensor is resonated and the reflected light provided with a resonance wavelength is formed. The waveguide grating has the plurality of grating periods, and when the displacement platform moves to a different position to make the broadband light source correspond to a different grating period, the position can correspond to the different resonance wavelength. Therefore, according to the aforementioned configuration, the position is determined according to the different resonance wavelength, instead of using an optical encoder; furthermore, the micrometer-scale or nanometer-scale displacement detection is achieved.

Abstract: A fluorescence immunoassay device based on integration of a photonic crystal and magnetic beads and a method thereof are provided. Magnetic beads with high surface-to-volume ratio are used as carriers of fluorescent molecules to obtain higher fluorescence density. The electric field on the surface of the photonic crystal is enhanced through excitation of photonic crystal resonance. The intensity of the fluorescence signal excited by the enhanced electric field is increased. Moreover, through interaction with the photonic crystal, some fluorescent signals that originally cannot be received by the fluorescent sensor are coupled to the photonic crystal resonant modes and reradiate toward the fluorescent sensor, thereby increasing collection efficiency. The fluorescence signals generated by fluorescent molecules on the magnetic beads are significantly intensified, which could lower the detection limit.

Abstract: A fluorescence immunoassay device based on integration of a photonic crystal and magnetic beads and a method thereof are provided. Magnetic beads with high surface-to-volume ratio are used as carriers of fluorescent molecules to obtain higher fluorescence density. The electric field on the surface of the photonic crystal is enhanced through excitation of photonic crystal resonance. The intensity of the fluorescence signal excited by the enhanced electric field is increased. Moreover, through interaction with the photonic crystal, some fluorescent signals that originally cannot be received by the fluorescent sensor are coupled to the photonic crystal resonant modes and reradiate toward the fluorescent sensor, thereby increasing collection efficiency. The fluorescence signals generated by fluorescent molecules on the magnetic beads are significantly intensified, which could lower the detection limit.

Abstract: A method of fabricating a thin film with a varying thickness includes the steps of providing a shadow mask with an opening, providing a carrier plate, arranging a substrate on the carrier plate, and coating the substrate through the opening whilst rotating the carrier plate relative to the shadow mask. A plurality of zones of the substrates is swept and exposed from arcuate portions of the opening per each turn by a plurality of predetermined exposure times, respectively. The varying thickness of the thin film corresponds to variation of the predetermined exposure times.

Abstract: An optical displacement sensing system is provided. With configuration of an optical sensor disposed on a displacement platform and in cooperation with a broadband light source and an optical spectrum analyzer, when the displacement platform moves, the waveguide grating of the optical sensor is resonated and the reflected light provided with a resonance wavelength is formed. The waveguide grating has the plurality of grating periods, and when the displacement platform moves to a different position to make the broadband light source correspond to a different grating period, the position can correspond to the different resonance wavelength. Therefore, according to the aforementioned configuration, the position is determined according to the different resonance wavelength, instead of using an optical encoder; furthermore, the micrometer-scale or nanometer-scale displacement detection is achieved.

Abstract: An optical displacement sensing system is provided. With configuration of an optical sensor disposed on a displacement platform and in cooperation with a broadband light source and an optical spectrum analyzer, when the displacement platform moves, the waveguide grating of the optical sensor is resonated and the reflected light provided with a resonance wavelength is formed. The waveguide grating has the plurality of grating periods, and when the displacement platform moves to a different position to make the broadband light source correspond to a different grating period, the position can correspond to the different resonance wavelength. Therefore, according to the aforementioned configuration, the position is determined according to the different resonance wavelength, instead of using an optical encoder; furthermore, the micrometer-scale or nanometer-scale displacement detection is achieved.

Abstract: A biological signal analyzing device configured to generate a first detection image or a second detection image is provided. The biological signal analyzing device includes a light-incident surface, a light-emitting surface and a plurality of optical-resonance structures. The sample is placed near the light incident surface, and receives a first light through the sample. The light resonance structures are configured to process the first light and generate a second and third light. The second light emits from the light emitting surface, and adapted to form the first detection image corresponding to the sample, and the third light emits from the light incident surface, and adapted to form the second detection image corresponding to the sample. The optical resonance structures vary their thickness along the first direction or vary the width along the second direction. A biological sensing apparatus, a sensing method and a fabrication method are also provided.

Abstract: Disclosed is a resonant wavelength measurement apparatus, including a light source and a measurement unit. The measurement unit has a guided-mode resonance filter and a photosensitive element. The guided-mode resonance filter has a plurality of resonant areas, and each resonant area has a different filtering characteristic, to receive first light in the light source transmitted by a sensor or receive second light in the light source reflected by the sensor. The first light has a first corresponding pixel on the photosensitive element, the second light has a second corresponding pixel on the photosensitive element, and the first corresponding pixel and the second corresponding pixel correspond to a same resonant wavelength.

Abstract: A biological signal analyzing device configured to generate a first detection image or a second detection image is provided. The biological signal analyzing device includes a light-incident surface, a light-emitting surface and a plurality of optical-resonance structures. The sample is placed near the light incident surface, and receives a first light through the sample. The light resonance structures are configured to process the first light and generate a second and third light. The second light emits from the light emitting surface, and adapted to form the first detection image corresponding to the sample, and the third light emits from the light incident surface, and adapted to form the second detection image corresponding to the sample. The optical resonance structures vary their thickness along the first direction or vary the width along the second direction. A biological sensing apparatus, a sensing method and a fabrication method are also provided.

Abstract: An optical displacement sensing system is provided. With configuration of an optical sensor disposed on a displacement platform and in cooperation with a broadband light source and an optical spectrum analyzer, when the displacement platform moves, the waveguide grating of the optical sensor is resonated and the reflected light provided with a resonance wavelength is formed. The waveguide grating has the plurality of grating periods, and when the displacement platform moves to a different position to make the broadband light source correspond to a different grating period, the position can correspond to the different resonance wavelength. Therefore, according to the aforementioned configuration, the position is determined according to the different resonance wavelength, instead of using an optical encoder; furthermore, the micrometer-scale or nanometer-scale displacement detection is achieved.

Abstract: Disclosed is a resonant wavelength measurement apparatus, including a light source and a measurement unit. The measurement unit has a guided-mode resonance filter and a photosensitive element. The guided-mode resonance filter has a plurality of resonant areas, and each resonant area has a different filtering characteristic, to receive first light in the light source transmitted by a sensor or receive second light in the light source reflected by the sensor. The first light has a first corresponding pixel on the photosensitive element, the second light has a second corresponding pixel on the photosensitive element, and the first corresponding pixel and the second corresponding pixel correspond to a same resonant wavelength.

Abstract: A fluorescence immunoassay device based on integration of a photonic crystal and magnetic beads and a method thereof are provided. Magnetic beads with high surface-to-volume ratio are used as carriers of fluorescent molecules to obtain higher fluorescence density. The electric field on the surface of the photonic crystal is enhanced through excitation of photonic crystal resonance. The intensity of the fluorescence signal excited by the enhanced electric field is increased. Moreover, through interaction with the photonic crystal, some fluorescent signals that originally cannot be received by the fluorescent sensor are coupled to the photonic crystal resonant modes and reradiate toward the fluorescent sensor, thereby increasing collection efficiency. The fluorescence signals generated by fluorescent molecules on the magnetic beads are significantly intensified, which could lower the detection limit.

Abstract: A dispersive element is incorporated with an optical sensor as a spectrometer. The dispersive element includes a guided-mode resonance filter having a plurality of resonance regions. The resonance regions respectively have different filter characteristics, each reflecting a first light beam of a tested light source or transmitting a second light beam of the tested light source light source to the optical sensor, wherein the wavelength of the first light beam is different from that of the second light beam. In one embodiment, the dispersive element is incorporated with an optical sensor to form a miniature, high-resolution and low-cost spectrometer. The spectrometer makes use of the transmission efficiencies of the resonance regions of the guided-mode resonance filter and the light intensity distribution detected by the photosensitive regions of the optical sensor to acquire the spectral data of the tested light source.

Abstract: A dispersive element is incorporated with an optical sensor as a spectrometer. The dispersive element includes a guided-mode resonance filter having a plurality of resonance regions. The resonance regions respectively have different filter characteristics, each reflecting a first light beam of a tested light source or transmitting a second light beam of the tested light source light source to the optical sensor, wherein the wavelength of the first light beam is different from that of the second light beam. In one embodiment, the dispersive element is incorporated with an optical sensor to form a miniature, high-resolution and low-cost spectrometer. The spectrometer makes use of the transmission efficiencies of the resonance regions of the guided-mode resonance filter and the light intensity distribution detected by the photosensitive regions of the optical sensor to acquire the spectral data of the tested light source.

Abstract: A pressure and shear force measurement device and a pressure and shear force measurement method are disclosed. The measurement device includes a flexible substrate; a plurality of signal outputting units embedded in the flexible substrate for outputting signals; and a plurality of signal detectors disposed at a peripheral of the flexible substrate for receiving at least a signal outputted from the signal outputting units, wherein when the flexible substrate has a load applied thereon and each of the signal outputting units has a displacement, each of the signal detectors detects a pressure and a shear force resulting from the load on the flexible substrate based on the signal received from the signal outputting units.

Abstract: A pressure and shear force measurement device and a pressure and shear force measurement method are disclosed. The measurement device includes a flexible substrate; a plurality of signal outputting units embedded in the flexible substrate for outputting signals; and a plurality of signal detectors disposed at a peripheral of the flexible substrate for receiving at least a signal outputted from the signal outputting units, wherein when the flexible substrate has a load applied thereon and each of the signal outputting units has a displacement, each of the signal detectors detects a pressure and a shear force resulting from the load on the flexible substrate based on the signal received from the signal outputting units.