Nec Corporation

Other

Yuichi Shimakawa

Yoshimi Kubo

Takashi Manako

Tsutomu Yoshitake

Hideto Imai

Shin Nakamura

Hidekazu Kimura

Sadanori Kuroshima

Tetsuo Tsuchiya

Toshiya Kumagai

Susumu Mizuta

Takeshi Obata

Yasuyuki Nakamura

Suguru Watanabe

Mayumi Kosaka

Ichiro Mase

An adhesive layeris disposed between a carbon particleand a catalyst substanceof a catalyst-supporting particle for a fuel cell containing the carbon particleand the catalyst substance. Thereby, the catalyst-supporting particle for fuel cell can be obtained in which a contact resistance between the catalyst substance and the carbon particle supporting the same is lower, and the aggregation of the catalyst substance is suppressed. A catalyst electrode for a fuel cell and the fuel cell using the above particle have a higher output power and an excellent durability.

Catalyst-supporting particle, composite electrolyte, catalyst electrode for fuel cell, and fuel cell using the same, and methods for fabricating these

An adhesion layer containing a second solid polymer electrolyte is disposed between a solid polymer electrolyte membrane and a fuel electrode and/or an oxidant electrode containing a first solid polymer electrolyte and a catalyst substance. The solid polymer electrolyte membrane and the adhesion layer are made of the same solid polymer electrolyte. In this manner, the adhesion at the interface between the electrode surface and the solid polymer electrolyte membrane is enhanced to implement the elevation of the cell characteristics and the elevation of the reliability of the cell.

Fuel cell, fuel cell electrode and method for fabricating the same

A heat controller for an object, having a composite material formed of a base material radiating a large amount of heat at a high-temperature phase and a phase-change substance having insulation properties at a high-temperature phase, having metallic properties at a low-temperature phase, radiating a small amount of heat at a low-temperature phase, and having a high reflectivity in the thermal infrared region at a low-temperature phase.

Heat control method and heat controller

A plurality of fuel electrodes are disposed on one surface of a solid polyelectrolyte membrane, while a plurality of oxidizer electrodes are disposed on the other surface of the same to create a plurality of unit cells which share the solid polyelectrolyte membrane. These unit cells are electrically connected through connection electrode extending through the solid polyelectrolyte membrane. A groove is formed in a region of the solid polyelectrolyte membrane between adjacent unit cells. This groove limits the migration of hydrogen ions to adjacent unit cells to prevent a reduction in voltage. The resulting solid polymer fuel cell, which is in a simple structure and reduced in size, can provide high power.

Fuel cell

Compounds are expressed by general formula of A BC where 0&lE;x&lE;2 and 0&lE;y<1, and have CdI2 analogous layer structures; A-site is occupied by at least one element selected from the group consisting of Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, Hf, Ta, W, Re, Ir, Pt, Au, Sc, rare earth elements containing Y, B, Al, Ga, In, Tl, Sn, Pb and Bi; B-site is occupied by at least one element selected from the group consisting of Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W, Ir, and Sn; C-site is occupied by at least one element selected from the group consisting of S, Se and Te; the compounds exhibit large figure of merit so as to be preferable for thermoelectric generator/refrigerator.

Thermoelectric material and thermoelectric converting element using the same

In an infrared ray sensor for a bolometer, a bridge structure body, a resistive element film for the bolometer, and a protection film is formed via a space on a substrate, and is formed into a solution form by dissolving metal organic compound into solvent. The solution is applied and dried. A laser ray is irradiated for the solution with wavelength of 400 nm or less. A bond between carbon and oxygen is decomposed and cut to thereby form an oxide thin-film.

Method for manufacturing infrared ray sensor

An oxide for use in a bolometer with an oxide thin-film formed is manufactured on an insulating substrate. Metal organic compound is dissolved in solvent to form solution during manufacturing the oxide thin-film. The solution is applied on the insulating substrate, and the applied solution is dried. A bond between carbon and oxygen is cut and decomposed by irradiating a laser ray with wavelength of 400 nm or less. A generated oxide is crystallized.

Method of manufacturing oxide thin film for bolometer

A high-sensitivity magnetic sensor capable of detecting a nonequilibrium spin, uses an almost-spin-polarized ferromagnetic oxide in a high-quality trilayer arrangement including an intermediate layer made of a conductive nonmagnetic oxide not reacting with a ferromagnetic metallic oxide and having a lattice matching between a spin injection layer and a spin detection layer.

Magnetic sensor

A compound magnetoresistance effect material which is an oxide containing thallium(Tl) and manganese(Mn); wherein the oxide has a composition of Tl.sub.2 Mn.sub.2 O.sub.y where y represents seven or a value near to seven which varies depending on a combination of components of the oxide, a composition ratio between the components and conditions in synthesis of the oxide and has a pyrochlore structure.

Compound magnetoresistance effect materials and method for making the

The present invention provides a compound magnetoresistive material having a perovskite related structure and being represented by M1.sub.m M2.sub.n+1 M3.sub.n Z.sub.y, where: M1 is a first metal comprising at least one element selected from the group consisting of Tl, Bi, Pb, and Hg; M2 is a second metal comprising at least one element selected from the group consisting of alkaline earth metals; M3 is a third metal comprising at least one element selected from the group consisting of Mn, Os, and Ru; Z is one selected from the group consisting of oxygen and anions in which some oxygen elements are replaced by Oh, F, B, Cl, Br, S, Se and Te; m is equal to 1 or 2; 1.ltoreq.n.ltoreq.4; y is variable and depends upon a kind of elements constituting the perovskite related structure, a ratio of composition thereof, and synthesis conditions thereof.

Compound magnetoresistive material and method for preparing the same

A magnetometric sensor has a wide p-portion formed of almost perfectly spin-polarized material, a wide d-portion also formed of almost perfectly spin-polarized material different in coercive force and a narrow n-portion provided between the wide p-portion and the wide d-portion formed of the almost perfectly spin-polarized material or non-magnetic material, and one of the p-portion and the d-portion changes the spin axes of the conduction electrons in the opposite direction to the other in the presence of a magnetic field for providing a potential gap between the Fermi surface of the p-portion and the Fermi surface of the d-portion, thereby causing electric current to change the amount thereof.

Magnetometric sensor magnetically isolated two regions formed of

An oxide superconducting material having a composition represented by a formula

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Tokyo, Japan

Yuichi Shimakawa