Waseda University

A method for producing a fiber Bragg grating element includes: a preparation step of preparing an optical fiber having a layer structure including a core and one or more outer peripheral layers that is made of a transparent optical material and that includes a cladding surrounding the core and having a refractive index less than a refractive index of the core, at least one outer peripheral layer of the one or more outer peripheral layers containing a photosensitive material; a stretching step of heating and stretching the optical fiber to form a narrow-diameter region having a reduced diameter and a pair of transition regions at both ends of the narrow-diameter region, a diameter of which gradually increases continuously from the narrow-diameter region; and an exposure step of irradiating a part of the narrow-diameter region with light to cause a photoinduced refractive index change and to form a fiber Bragg grating in which a refractive index of the outer peripheral layer containing the photosensitive material periodically changes.

The present invention provides: a method of reducing an adhesive strength of an adhesion layer, the method including applying an electric pulse to an article including a portion in which two or more members are bonded to each other via an adhesion layer containing a conductive filler, to thereby reduce an adhesive strength of the adhesion layer; and a method of reusing a member or a functional part in the member, the method including removing the member from the article by using the above-mentioned method.

A thermoelectric power generation device includes a beam portion, a first leg portion, and a second leg portion formed integrally with a wiring substrate. The beam portion, the first leg portion, and the second leg portion are curved and deformed, and the first contact portion and the second contact portion integrally formed at the distal ends of the first leg portion and the second leg portion, respectively, are mounted in close contact with a heat source. The first leg portion and the second leg portion rise obliquely upward from the heat source, and the beam portion connected to the base ends of the first leg portion and the second leg portion is disposed above the heat source. Thermoelectric elements are mounted to the first leg portion and the second leg portion.

A video super-resolution device includes a down-sampler, video super-resolvers, and a selecting/averaging unit. The down-sampler divides an input low-resolution video into a plurality of frame rates. The video super-resolvers are video super-resolvers trained at different frame rates, and perform super-resolution of the low-resolution video. The selecting/averaging unit selects a video super-resolver according to the magnitude of an optical flow obtained as a result of video super-resolution. Specifically, in a case where the optical flow has a value smaller than 0.5 pixels, the selecting/averaging unit makes selection such as not adopting a result of video super-resolution at a high frame rate. Finally, the selecting/averaging unit obtains a mean value of the selected video super-resolution result, and outputs a final high-resolution video.

A method for generating carbon monoxide includes: a generation step of generating carbon monoxide by supplying carbon dioxide to a first material containing a first element included in elements of group 11 and a second element included in elements of groups 8 to 10, 12, and 13; and a reduction step of reducing the second element oxidized in the generation step by supplying hydrogen to a second material containing the oxidized second element and the first element. The generation step and the reduction step are repeated a plurality of times.

A thermoelectric generator substrate includes: a flexible substrate including an insulating base material and a metal layer; and a cell substrate portion, wherein the cell substrate portion includes a strip-shaped first beam portion, a strip-shaped first leg portion whose one end is coupled to one end of the first beam portion and extends toward a center of the first beam portion, a strip-shaped second leg portion whose one end is coupled to the other end of the first beam portion and extends toward the center of the first beam portion, a first contact portion coupled to the other end of the first leg portion and in contact with a heat source, and a second contact portion coupled to the other end of the second leg portion and in contact with the heat source, and the first leg portion and the second leg portion are configured to deform and erect by widening an interval between the first contact portion and the second contact portion.

The purpose of this invention is to provide a semiconductor device that prevents defects in semiconductor elements caused by differences in thermal expansion and maintains low electrical resistance by directly or indirectly laminating an Fe—Ni alloy metal layer onto the front-surface or back-surface electrodes of the semiconductor element. In this invention, an Fe—Ni alloy metal layer is directly or indirectly applied on the surface electrodes of the semiconductor element, and the semiconductor element is connected to a conductor through the Fe—Ni alloy metal layer. Depending on the application, the Ni content of the Fe—Ni alloy metal layer is set within the range of 36% to 45% by weight, and the thickness of the Fe—Ni alloy metal layer is set within the range of 2 μm to 20 μm.

An ischemic cardiopathy diagnosis assistance system includes pressure data acquisition means 11 for acquiring pressure data including proximal pressure Pa in a proximal stenotic segment A 1 and distal pressure Pd in a distal stenotic segment A 2 ; intracoronary electrocardiogram data acquisition means 12 for acquiring intracoronary electrocardiogram data made up of a local intracoronary artery electrocardiogram in a neighborhood of the distal stenotic segment; and computational processing means 14 for finding a pressure ratio Pa/Pd between the proximal pressure Pa and distal pressure Pd at a time suitable for diagnosis of ischemic cardiopathy based on these data. The computational processing means temporally associates the pressure data with the intracoronary electrocardiogram data, estimates an analysis period T during which vascular resistance remains stably low from a waveform of the intracoronary electrocardiogram data, and extract the pressure data of the analysis period T, and finds the pressure ratio Pa/Pd from the pressure data.

Provided are a diamond field effect transistor using a silicon oxide film as a gate insulating film including a silicon-terminated layer containing C—Si bonds in order to reduce an interface state density, and a method for producing the same. A FET 100 A includes a silicon oxide film 3 A formed on a surface of a non-doped diamond layer 2 A, a non-doped diamond layer 4 A formed on a surface of the non-doped diamond layer 2 A using the silicon oxide film 3 A as a mask, a silicon-terminated layer 5 A formed at an interface between the non-doped diamond layer 2 A and the silicon oxide film 3 A and at an interface between the non-doped diamond layer 4 A and the silicon oxide film 3 A, and a gate electrode 12 A formed on the silicon oxide film 3 A. The FET 100 A operates using the silicon oxide film 3 A and an insulating film 10 A formed on the silicon oxide film 3 A as a gate insulating film 11 A and using the non-doped diamond layer 4 A as each of a source region and a drain region.

A happiness model generation apparatus ( 100 ) includes a questionnaire content construction unit ( 110 ) and a happiness model construction unit ( 140 ). The questionnaire content construction unit ( 110 ) constructs as a questionnaire for model construction, a questionnaire for constructing a happiness model that deduces based on a result of administering a happiness survey questionnaire to a target person, happiness of the target person, and that describes the happiness based on three factors, a factor related to work of the target person, a first private life factor that is a factor related to a private life of the target person, and a second private life factor that is a factor among factors related to the private life of the target person that is not included in the first private life factor. The happiness model construction unit ( 140 ) constructs the happiness model based on, among questionnaire items of the questionnaire for model construction, a questionnaire item to understand happiness and a questionnaire item that correlates with the happiness.