Nec Corporation

Tohoku University

Nec C Orporation

Akihiro Kirihara

Masahiko Ishida

Shigeru Koumoto

Yuma Iwasaki

Ryohto Sawada

Eiji Saitoh

Koichi Terashima

Hiroyuki Endoh

Yasunobu Nakamura

Kenichi Uchida

Hiroko Someya

Shinichi Yorozu

Yasutomo Omori

Takashi Manako

Ryo Iguchi

Yasuyuki Oikawa

Sadanori Hattori

Masao Ono

Yuki Shiomi

Asuka Fukue

A heat-flow sensor that includes an insulating layer, a magnetic field application layer arranged on a first surface of the insulating layer and composed of a conductor, and a heat-flow detection layer arranged on a second surface of the insulating layer, the second surface facing the first surface, and the heat-flow detection layer composed of a conductive magnetic body. The heat-flow detection layer faces the magnetic field application layer via the insulating layer.

Heat-flow sensor

A portable power supply according to one or more embodiments includes a combustion device () and a heating container () that retains an object to be heated, wherein at least a part of a portion of the heating container, the portion being directly heated by the combustion device, is provided with a magnetic metal plate () that has spontaneous magnetization and that generates electromotive force due to an anomalous Nernst effect induced by the heating, and wherein electrodes () for drawing power are provided. Thus, the heating container for generating electricity has a simple configuration, and furthermore the portable power supply is provided with both the heating container and the combustion device.

Portable power supply

This invention prevents measurement error from becoming large in thermoelectric conversion coefficient evaluation and enhances evaluation efficiency. This invention is a physical property evaluation device for evaluating the physical properties of a plurality of solid materials formed on a substrate. The physical property evaluation device comprises an electromotive force measurement means that forms closed circuits including the individual solid materials and measures the electromotive forces occurring at the two ends of each of the solid materials, a means for producing heat flow within the individual solid materials, an external magnetic field generation means for generating a uniform magnetic field having a given intensity and direction in the vicinity of the individual solid materials, and an automation means for evaluating the physical properties of the individual solid materials using the electromotive force measurement means, heat flow production means, and external magnetic field generation means.

Physical property evaluation device

A thermoelectric conversion element that has a power generation layer containing an iron-aluminum based magnetic alloy material containing equal to or more than 70 weight percent of iron and aluminum in total. The power generation layer generates an electromotive force, due to an anomalous Nernst effect that develops in the magnetic alloy material in response to a temperature gradient applied thereto, in a direction intersecting both the magnetization direction of the magnetic alloy material and the direction of the applied temperature gradient.

Thermoelectric conversion element

Provided are an exterior body and an abnormality detector capable of suppressing bulking even when a heat generation detection function is provided. The exterior body of an electronic device generates heat during operation and is characterized by being provided with a magnetic body that is at least a portion of the exterior body, that has spontaneous magnetization, and that generates an electromotive force by exhibiting an abnormal Nernst effect through heat generation of the electronic device, wherein an electrode for extracting power is provided to the magnetic body.

Exterior body, abnormality detector, and abnormality detection system

In order to enable the measurement of thermal property information about a subject, this thermal diffusion coefficient measuring device, which is used by contacting the surface of a living body, is provided with: a biological information sensor comprising a temperature sensor and a heat flux sensor; and a heating/cooling control means. The temperature sensor is provided at a position contacting the surface of the living body, and operates so as to detect skin temperature. The heat flux sensor is provided at a position contacting the surface of the living body, while being adjacent to the temperature sensor, and operates so as to detect heat flux on the surface of the living body. The heating/cooling control means enables the measurement of the temperature diffusion coefficient of a thermal resistance component that is present between the biological information sensor and a deep inner portion of the living body.

Thermal diffusion coefficient measuring device, and deep-body thermometer, deep-body temperature measuring device, and deep-body temperature measuring method using same

The purpose of the present invention is to make it possible to ensure a strength that allows thermoelectric evaluation to be performed even when sintering is carried out at a temperature lower than the minimum sintering temperature of a power generation layer, in a thermoelectric conversion element. For this purpose, this thermoelectric conversion element is characterized by being provided with a power generation layer and support layers including a sintered body, wherein the power generation layer is provided with a metal-magnetic insulator composite structure in which metal is formed in a net shape around a granulated magnetic body, the support layers are formed so as to be in contact with the top and bottom or the right and left of the power generation layer, and the minimum sintering temperature of the support layers is lower than the minimum sintering temperature of the power generation layer.

[Problem] To provide a heat exchange device with which efficient electric power generation can be performed while transfer of a heat amount is maintained. [Solution] A heat exchange device comprising a heat exchange sectionand a magnetic body. The heat exchange sectionincludes a first heat transmission interfacein contact with a heat source, and a second heat transmission interfacein contact with a heat bath having a temperature different from that of the heat source. The magnetic bodyis interposed between the first heat transmission interfaceand the second heat transmission interfaceof the heat exchange section, and includes a magnetization component in a direction intersecting a heat flux produced between the first heat transmission interfaceand the second heat transmission interface

Heat exchange device, heat exchange system, and heat exchange method

In order to determine information about the generation of heat in a bearing () in a simple manner, a bearing () includes an outer ring () secured to a securing member, and an inner ring () provided on the inside of the outer ring () and secured to a shaft that rotates in the circumferential direction relative to the securing member. A thermal flow sensor () is provided as a coating on a securing-side surface that includes the outer ring (), and generates a thermoelectromotive force including information about frictional heat generated with the rotation of the shaft.

Bearing with measurement function

A thermoelectric conversion element includes a cable. The cable includes a first member extended in the axis direction of the cable, and a second member extended in the axis direction to cover at least a part of the outer face of the first member. One of the first and second members is a magnetic body. The other of the first and second members is a conductive body formed of material exhibiting a spin orbit coupling.

Thermoelectric conversion element, thermoelectric conversion system and manufacturing method of thermoelectric conversion element

A thermoelectric conversion structure according to an exemplary aspect of the invention includes a thermoelectric conversion unit structure including a magnetic fine particle including a magnetic material with the spin Seebeck effect arising and an electromotive body with which to cover the magnetic fine particle, wherein a plurality of the thermoelectric conversion unit structures form an aggregate with the electromotive body connecting to each other.

Thermoelectric conversion structure and method for making the same

A thermoelectric conversion element includes: a magnetic body having a magnetization; and an electromotive body formed of material exhibiting a spin orbit coupling and jointed to the magnetic body. The magnetic body has an upper joint surface jointed to the electromotive body. The upper joint surface has concavities and convexities.

Thermoelectric conversion element and method of manufacturing the same, and heat radiation fin

In order to further improve the spin-current/electric-current conversion efficiency in a spin-current thermoelectric conversion element, a thermoelectric conversion element includes a magnetic material layer having in-plane magnetization; and an electromotive material layer magnetically coupled with the magnetic material layer. The electromotive material layer includes a first conductor with a spin orbit coupling arising, and a second conductor having lower electric conductivity than electric conductivity of the first conductor.

Thermoelectric conversion element and method for making the same

An object of the present invention is to provide a low-cost thermoelectric converter element having high productivity and excellent conversion efficiency. A thermoelectric converter element according to the present invention includes a substrate, a magnetic filmprovided on the substratewith a certain magnetization direction A and formed of a polycrystalline magnetically insulating material, and an electrodeprovided on the magnetic filmwith a material exhibiting a spin-orbit interaction. When a temperature gradient is applied to the magnetic film, a spin current is generated so as to flow from the magnetic filmtoward the electrode. A current I is generated in a direction perpendicular to the magnetization direction A of the magnetic filmby the inverse spin Hall effect in the electrode

Growing community of inventors

Tokyo, Japan

Akihiro Kirihara