Abstract: A method for preparing-3,3?-diaminobenzidine, the method comprising the following steps: subjecting 4,4?-biphenol and N,N-dimethylsulfamoyl chloride to an esterification reaction in a specified solvent at 40-70° C. to obtain 4,4?-biphenyl bis(N,N-dimethylaminosulfonate) as a first intermediate; subjecting the 4,4?-biphenyl bis(N,N-dimethylaminosulfonate) to a chlorination reaction with a chlorinating reagent under acidic conditions to obtain 3,3?-dichloro-4,4?-biphenyl bis(N,N-dimethylaminosulfonate) as a second intermediate; subjecting the second intermediate 3,3?-dichloro-4,4?-biphenyl bis(N,N-dimethylaminosulfonate) to an ammonolysis reaction with anammoniation reagent in the presence of a combined catalyst to obtain a crude product of 3,3?,4,4?-tetraaminobiphenyl, wherein the combined catalyst is a mixture of proline, a cuprous salt and a phase transfer catalyst; and subjecting the crude product of 3,3?,4,4?-tetraaminobiphenyl to a post-treatment to obtain a purified 3,3?,4,4?-tetraaminobiphenyl product.

Abstract: A vibration sensor according to an embodiment includes a laminated body. The laminated body includes a support layer a first end of which is fixed; a piezoelectric layer on the support layer; an insulating layer disposed between the support layer and the piezoelectric layer; a common electrode disposed on a first principal surface of the piezoelectric layer; a first sensing electrode disposed in a first area on a second principal surface of the piezoelectric layer on the side opposite to the first principal surface; and a drive electrode disposed in a second area different from the first area on the second principal surface of the piezoelectric layer. The first area is located near the first end of the support layer.

Abstract: A sensor module according to an embodiment includes a sensor; a sensor holder that holds the sensor and includes a pressing force application portion to apply a pressing force to press the sensor toward a measurement target object side; an adhesion portion that adheres the sensor holder to the measurement target object by an adhesion force; and a change mechanism that changes a relative magnitude relationship between the pressing force and the adhesion force.

Abstract: According to one embodiment, a sensor attachment/detachment device of the embodiment includes a sensor, a bonding member, a support portion, and a release execution portion. The bonding member is bonded to a first surface of the sensor and has a function of decreasing an adhesive force. The support portion can support the sensor by directly contacting a second surface of the sensor or via another functional portion. The release execution portion performs a process of releasing the bonding member from the object by decreasing the adhesive force of the bonding member after the sensor is attached to the object by the bonding member.

Abstract: An adhesion/peeling method according to an embodiment includes adhering a first surface side of an electrically peelable adhesive sheet to a predetermined position of a fixation target object, wherein the electrically peelable adhesive sheet is formed of an electro-peeling adhesive having adhesiveness on the first surface side and a second surface side thereof, and the adhesiveness of the electro-peeling adhesive is lowered due to an input of a voltage; adhering a first electrode of an adherend including the first electrode formed of a conductor to the second surface side of the electrically peelable adhesive sheet; containing a liquid at the predetermined position of the fixation target object to temporarily form a second electrode with conductivity on a surface of the fixation target object; and inputting a predetermined voltage between the first electrode and the second electrode to peel of the electrically peelable adhesive sheet from the fixation target object.

Abstract: A flexible solar cell is a flexible organic solar cell that can be completed at a low temperature, is easily prepared, and has a relatively low cost and relatively high efficiency. The flexible transparent electrode is prepared by selecting a plastic substrate with silver nanowires embedded therein, and thus, a flexible transparent electrode with better electrical properties, stronger adhesion and better mechanical properties can be obtained. The flexible transparent electrode prepared using the substrate with the silver nanowires embedded therein has lower sheet resistance and higher conductivity.

Abstract: According to one embodiment, a cantilever array includes a plurality of cantilever pairs. Each of the cantilever pairs includes a first cantilever and a second cantilever facing the first cantilever while having a gap, and which are arrayed in a direction orthogonal to a facing direction. Positions of the gaps of the cantilever pairs shift from each other when viewing in an array direction.

Abstract: A molecular detection apparatus includes a detector. The detector includes: a vibrator having a piezoelectric member that has a first surface and a second surface, a first electrode connected to the first surface, a second electrode connected to the second surface, and a third electrode connected to the second surface and disconnected from the second electrode; a sensitive film overlapping at least one part of the second electrode and at least one part of the third electrode and configured to change a vibration frequency of the vibrator in response to an interaction with target molecules; and a detection electrode to detect the changed vibration frequency.

Abstract: According to one embodiment, an optical deflection element includes a substrate and three or more electrodes. The substrate has an incidence plane which the laser light enters and an emission plane from which the laser light exits. The three or more electrodes are arranged on the substrate at first intervals in a first direction. Electrodes allow a surface acoustic wave having a first wavelength to be generated in the substrate by applying a voltage thereto. Wiring is provided such that a voltage is selectively applied to the electrodes at an interval between at least two electrodes. The electrodes allow a surface acoustic wave having a second wavelength to be generated in the substrate by applying a voltage selectively at second intervals.

Abstract: According to one embodiment, a sensor module includes a sensor and a diagnosis circuit. The sensor includes piezoelectric transducers and switches. The piezoelectric transducers have different resonance frequencies. The switches are provided to correspond to the piezoelectric transducers, respectively. Each of the switches outputs an output signal corresponding to a voltage generated by an inverse piezoelectric effect of a corresponding piezoelectric transducer of the piezoelectric transducers. The diagnosis circuit diagnoses, based on a difference in pattern of the output signal, whether vibration has newly occurred in the sensor, and switch an output destination of the output signal of the sensor according to a result of the diagnosis.

Abstract: According to one embodiment, a sensor module includes at least one sensor and at least one switch. The sensor includes a first piezoelectric element. The first piezoelectric element includes a first electrode. The first piezoelectric element is set with a resonance frequency to resonate at a vibration frequency of a detection target. The switch includes a second piezoelectric element. The second piezoelectric element includes a second electrode connected to the first electrode and a third electrode electrically separated from the second electrode.

Abstract: A vibration sensor according to an embodiment includes a laminated body. The laminated body includes a support layer a first end of which is fixed; a piezoelectric layer on the support layer; an insulating layer disposed between the support layer and the piezoelectric layer; a common electrode disposed on a first principal surface of the piezoelectric layer; a first sensing electrode disposed in a first area on a second principal surface of the piezoelectric layer on the side opposite to the first principal surface; and a drive electrode disposed in a second area different from the first area on the second principal surface of the piezoelectric layer. The first area is located near the first end of the support layer.

Abstract: A vibration sensor according to an embodiment includes a laminated body. The laminated body includes a support layer a first end of which is fixed; a piezoelectric layer on the support layer; an insulating layer disposed between the support layer and the piezoelectric layer; a common electrode disposed on a first principal surface of the piezoelectric layer; a first sensing electrode disposed in a first area on a second principal surface of the piezoelectric layer on the side opposite to the first principal surface; and a drive electrode disposed in a second area different from the first area on the second principal surface of the piezoelectric layer. The first area is located near the first end of the support layer.

Abstract: An electrically assisted pressure joining apparatus and an electrically assisted pressure joining method join a first metal member and a second metal member together, and includes an electrode portion, an intermediate portion including a plurality of micropores and inserted between a first metal member and a second metal member, and a pressure portion connected to the electrode portion to receive a current from the electrode portion and transfer the current to the first metal member and the second metal member to apply a pressure to the first metal member such that the first metal member and the second metal member are joined together by the intermediate portion.

Abstract: The present disclosure provides a cathode interface modification material composition, a preparation method and use thereof. In the present disclosure, a uniformly dispersed novel cathode interface modification material composition is obtained by adding a carbon nanomaterial to a cathode interfacial material and dispersing the same in a polar solvent. The cathode interface modification material composition of the present disclosure and the cathode interface modification layer prepared using the cathode interface modification material composition of the present disclosure can be used for the fabrication of various types of organic photoelectric devices.

Abstract: According to one embodiment, an optical deflection element includes a substrate and three or more electrodes. The substrate has an incidence plane which the laser light enters and an emission plane from which the laser light exits. The three or more electrodes are arranged on the substrate at first intervals in a first direction. Electrodes allow a surface acoustic wave having a first wavelength to be generated in the substrate by applying a voltage thereto. Wiring is provided such that a voltage is selectively applied to the electrodes at an interval between at least two electrodes. The electrodes allow a surface acoustic wave having a second wavelength to be generated in the substrate by applying a voltage selectively at second intervals.

Abstract: According to one embodiment, a sensor module includes at least one sensor and at least one switch. The sensor includes a first piezoelectric element. The first piezoelectric element includes a first electrode. The first piezoelectric element is set with a resonance frequency to resonate at a vibration frequency of a detection target. The switch includes a second piezoelectric element. The second piezoelectric element includes a second electrode connected to the first electrode and a third electrode electrically separated from the second electrode.

Abstract: According to one embodiment, a sensor module includes a sensor and a diagnosis circuit. The sensor includes piezoelectric transducers and switches. The piezoelectric transducers have different resonance frequencies. The switches are provided to correspond to the piezoelectric transducers, respectively. Each of the switches outputs an output signal corresponding to a voltage generated by an inverse piezoelectric effect of a corresponding piezoelectric transducer of the piezoelectric transducers. The diagnosis circuit diagnoses, based on a difference in pattern of the output signal, whether vibration has newly occurred in the sensor, and switch an output destination of the output signal of the sensor according to a result of the diagnosis.

Abstract: A molecular detection apparatus includes a detector. The detector includes: a vibrator having a piezoelectric member that has a first surface and a second surface, a first electrode connected to the first surface, a second electrode connected to the second surface, and a third electrode connected to the second surface and disconnected from the second electrode; a sensitive film overlapping at least one part of the second electrode and at least one part of the third electrode and configured to change a vibration frequency of the vibrator in response to an interaction with target molecules; and a detection electrode to detect the changed vibration frequency.

Abstract: A vibration sensor according to an embodiment includes a laminated body. The laminated body includes a support layer a first end of which is fixed; a piezoelectric layer on the support layer; an insulating layer disposed between the support layer and the piezoelectric layer; a common electrode disposed on a first principal surface of the piezoelectric layer; a first sensing electrode disposed in a first area on a second principal surface of the piezoelectric layer on the side opposite to the first principal surface; and a drive electrode disposed in a second area different from the first area on the second principal surface of the piezoelectric layer. The first area is located near the first end of the support layer.