Abstract: This SiC heater includes a heating element having a thin plate-shaped silicon carbide sintered body and an insulating coat film formed on a surface of the silicon carbide sintered body, a pair of electrodes for conducting electricity in the heating element, and a heater base that holds the heating element from one surface side while insulating the heating element from heat from the heating element, the insulating coat film is located on a surface of the silicon carbide sintered body opposite to the heater base, an electrical resistivity at room temperature of the insulating coat film is 109 ?·cm or more, a thermal expansion coefficient of the insulating coat film is 2×10?6/K or more and 6×10?6/K or less, SiO2 is included as a matrix, 1% by weight or more and 35% by weight or less of a first additive component including at least one of B2O3 and Al2O3 is contained, and 1% by weight or more and 35% by weight or less of a second additive component including at least one of MgO and CaO is contained.

Abstract: An electrostatic chuck device includes: in order, an electrostatic chuck part having one principal surface serving as a placing surface on which a plate-shaped sample is placed, and having a built-in internal electrode for electrostatic attraction; a heating member bonded to a surface on the side opposite to the placing surface of the electrostatic chuck part in a pattern having gaps; a sheet material; and a base part having a function of cooling the electrostatic chuck part, in which a silicone resin sheet having a layer thickness of 10 ?m or more and less than 200 ?m and a Shore hardness (A) in a range of 10 to 70 is provided between the electrostatic chuck part and the heating member.

Abstract: The titanium oxide powder of the present invention is a titanium oxide powder which has a BET specific surface area of 5 m2/g or more and 15 m2/g or less, and contains octahedral-shaped particles, wherein each octahedral-shaped particle thereof has line segments each of which connects two apexes which face each other and has a maximum value of the line segments, an average value of the maximum values is 300 nm or higher and 1000 nm or lower, and a value (D90/D10) is 1 or higher and 3 or lower, wherein the value is obtained by dividing a value (D90), which corresponds to 90% in a cumulative number percentage of the maximum values of line segments each of which connects two apexes which face each other, by a value (D10) which corresponds to 10% in the cumulative number percentage.

Abstract: Provided is an optical modulator capable of effectively dispersing and releasing heat generated by termination resistors, improving the reliability of a termination substrate including the termination resistors, and reducing influence of heat on an optical waveguide.

Abstract: An optical modulator includes an optical modulation element (102) including a plurality of signal electrodes (112a and the like), a plurality of lead pins (116a and the like) for inputting high frequency signals, and a relay substrate (118) in which conductor patterns (202a and the like) that electrically connect the lead pins and the signal electrodes are formed, and at least one of the conductor patterns in the optical modulator is constituted so that at least one resonant frequency of the at least one of the conductor patterns is different from at least one resonant frequency of at least one of the other conductor patterns.

Abstract: An electrostatic chuck device includes: an electrostatic chuck part which incorporates an internal electrode for electrostatic attraction and has a placing surface on which a plate-like sample is placed; a base part which cools the electrostatic chuck part; and an adhesion layer which bonds the electrostatic chuck part and the base part to integrate the parts together, in which a first through-hole is provided in the electrostatic chuck part, a second through-hole that communicates with the first through-hole is provided in the base part, a tubular insulator is fixed in the second through-hole, an annular sealing member is sandwiched between the electrostatic chuck part and a distal end surface of the insulator, wherein the distal end surface is located on the electrostatic chuck part side of the insulator, and a tubular insulating wall member is located at the inner side of the sealing member in the radial direction.

Abstract: Provided is an optical modulator that includes an adhesive layer whose thickness can be reduced and that ensures high reliability, while band-widening and low voltage drive are realized. An optical modulator includes features as follows: a substrate (optical waveguide substrate) having an electro-optic effect; an optical waveguide formed on the substrate; and a traveling-wave electrode (signal electrode and ground electrode) formed on the substrate in order to modulate a light wave propagating through the optical waveguide, in which the substrate has a thickness of 30 ?m or lower, a reinforcing substrate that holds the substrate through an adhesive layer interposed between the reinforcing substrate and the substrate is provided, and the adhesive layer includes an air gap section where no adhesive agent is present.

Abstract: To provide an optical element in which an electrode is directly formed on an LN substrate, and a drift phenomenon is suppressed. In an optical element including: a substrate made of lithium niobate crystals; and an electrode disposed on the substrate, the substrate and the electrode are in direct contact with each other, and as a contact metal disposed on a surface of the electrode where the electrode is in contact with the substrate, a metal material whose standard enthalpy of formation per coordinate bond upon oxidation is greater than a standard enthalpy of formation per coordinate bond of niobium pentoxide is used.

Abstract: The electrostatic chuck device includes: a base having one main surface serving as a mounting surface on which a plate-shaped sample is mounted; and an electrode for electrostatic attraction provided on a side opposite to the mounting surface in the base or in an interior of the base, in which the electrode for electrostatic attraction is made of a composite sintered body that includes a matrix phase having insulation properties and a dispersed phase having a lower volume resistivity value than the matrix phase, in any cross section of the composite sintered body, a region of the dispersed phase, which is surrounded by the matrix phase and is independent, includes aggregated portions having a maximum Feret diameter of 30 ?m or more, and one or more of the aggregated portions are present in a range of 2500 ?m2 in any cross section of the sintered body.

Abstract: A cathode material for a lithium-ion secondary battery of the present invention is active material particles including central particles represented by General Formula LixAyDzPO4 (0.9<x<1.1, 0<y?1, 0?z<1, and 0.9<y+z<1.1; here, A represents at least one element selected from the group consisting of Co, Mn, Ni, Fe, Cu, and Cr, and D represents at least one element selected from the group consisting of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, and Y) and a carbonaceous film that coats surfaces of the central particles, in which a coarse particle ratio in a particle size distribution is 35% or more and 65% or less.

Abstract: In a waveguide-type optical modulation element that modulates light by applying radio frequency signals to an electrode, the realization of the additional broadening of the bandwidth by improving the degree of freedom in the design of the electrode is enabled. An optical modulation element, which includes optical waveguides provided in a substrate and electrodes that control light waves propagating through the optical waveguides and modulates light by propagating radio frequency signals to the electrodes, in which the electrodes include conductive layers made of copper or a copper alloy and protective layers made of a material other than copper and a copper alloy.

Abstract: A ceramic substrate made of a dielectric material including silicon carbide particles, which is used as a forming material, in which the number of the silicon carbide particles per unit area on the surface of the substrate is smaller than the number of the silicon carbide particles per unit area in a cross section of the substrate.

Abstract: This electrostatic chuck device (1) includes a base (11) having one main surface serving as a mounting surface (19) on which a plate-shaped sample is mounted, and an electrode for electrostatic attraction (13) provided on the side opposite to the mounting surface (19) in the base (11), in which the base (11) consists of a ceramic material as a forming material, and the ceramic material contains aluminum oxide and silicon carbide as main components thereof, and has a layered graphene present at a grain boundary of the aluminum oxide.

Abstract: An optical waveguide device module includes an optical waveguide device and a connection substrate provided outside the optical waveguide device, and these are housed in a housing. The optical waveguide device has a control electrode including a signal electrode and ground electrodes disposed to interpose the signal electrode between the ground electrodes. A signal line, ground lines disposed so as to interpose the signal line between the ground lines, and a back surface ground electrode disposed on a surface of the connection substrate are provided on the connection substrate. The ground line and the back surface ground electrode are electrically connected through a via hole passing through the connection substrate. Electrical connection means for electrically connecting the ground line and the ground electrode is provided. A connection portion of the electrical connection means on the ground line side is in the vicinity of the via hole of the ground line.

Abstract: An electrode material for a lithium ion secondary battery of the present invention is an electrode material for a lithium ion secondary battery including an electrode active material and a carbonaceous film that coats a surface of the electrode active material, in which a hydroxy group and a group which is at least one selected from a carboxyl group, a nitro group, and a sulfo group have been introduced to an outermost surface of the carbonaceous film, a ratio of a total count number of the group which is at least one selected from the carboxyl group, the nitro group, and the sulfo group to a count number of the hydroxy group is 0.001 or more and 10.000 or less when a surface of the carbonaceous film is analyzed through time-of-flight secondary ion mass spectrometry to obtain the ratio, a coating ratio of the carbonaceous film is set to 40% or more and 90% or less, and the carbonaceous film has at least one through-hole per 100 square nanometers.

Abstract: The present invention relates to a method for producing titanium oxide particles, comprising a step of producing a mixed solution by mixing a hydrolysis product of a titanium alkoxide or a titanium metal salt and a compound having a five-membered ring containing nitrogen and a step of generating titanium oxide fine particles by heating and pressurizing the mixed solution, titanium oxide particles produced by the same production method, a dispersion solution of titanium oxide particles produced using the same titanium oxide particles, titanium oxide paste, a titanium oxide film, and a dye-sensitized solar cell.

Abstract: According to an electrostatic chuck device of the present invention, a cross-sectional shape of a base body in a thickness direction is a convex curved surface or a concave curved surface that gradually curves from a center of one main surface toward an outer periphery of the one main surface, an annular projection portion is provided on a peripheral portion on the one main surface of the base body so as to go around the peripheral portion, a plurality of convex projection portions are provided in a region surrounded by the annular projection portion, a difference between a height of a top surface of the convex projection portion positioned at a center of the one main surface and a height of an upper surface of the annular projection portion is 1 ?m or higher and 30 ?m or lower, the convex projection portion has the top surface in contact with the plate-shaped sample, a side surface, and an R surface continuously connecting the top surface and the side surface, and a ratio of a diameter of the top surface to

Abstract: An optical modulator includes an optical waveguide formed on a substrate and modulates a light wave propagating through the optical waveguide, in which the optical waveguide has a configuration in which a plurality of branching parts are connected to each other in multiple stages, each of branched waveguides branched from a branch point of a first branching part among the plurality of branching parts has a transition curve of which a curvature changes, in a predetermined section from the branch point, each of the branched waveguides is formed by the transition curve starting from a curvature of 0, and a curvature change and a width change of the optical waveguide are set to be symmetric between the branched waveguides, and second branching parts formed in the respective branched waveguides are disposed at different positions between the branched waveguides in a direction along a propagation axis of the optical waveguide.

Abstract: This electrostatic chuck device includes an electrostatic chuck part which has a placement surface on one main surface thereof to place a plate-shaped sample and has an electrode for electrostatic attraction; a temperature controlling base part which is provided at a side opposite to the placement surface of the electrostatic chuck part electrostatic chuck part and is configured to cool the electrostatic chuck part; and a heater element disposed between the electrostatic chuck part and the temperature controlling base part or in the electrostatic chuck part in a layer form, in which the electrostatic chuck part and the temperature controlling base part are parts in which a plurality of through holes communicating in a thickness direction are provided, the heater element has a first site formed in a band shape and a second site continuous with the first site, wherein the second site is formed to have in a band shape and a closed ring shape, one through hole of the through holes is disposed on an inner peripher

Abstract: An object is to provide an electrostatic chuck device having high heat resistance, which can be used even under high-temperature environment. An electrostatic chuck device includes: an electrostatic chuck section having a placing surface for placing a plate-shaped sample on one main surface thereof and an electrode for electrostatic adsorption; a temperature-controlling base section which is provided on the other side of the electrostatic chuck section in relation to the placing surface to cool the electrostatic chuck section; a heater element which is provided in a form of a layer between the electrostatic chuck section and the temperature-controlling base section; and a first adhesive layer which is provided between the heater element and the electrostatic chuck section to adhere the heater element and the electrostatic chuck section to each other, in which the first adhesive layer is made of inorganic glass or an inorganic material having a partially crystallized glass structure.