Abstract: The present invention provides an actuator, comprising a fiber and a temperature regulator capable of at least one of heating and cooling the fiber. The fiber is twisted around a longitudinal axis thereof. The fiber is folded so as to have a shape of a cylindrical coil. The fiber is formed of linear low-density polyethylene. The following mathematical formula (I) is satisfied: D/d<1 (I), where D represents a mean diameter of the cylindrical coil; and d represents a diameter of the fiber.

Abstract: The present invention provides an actuator, comprising a fiber and a temperature regulator capable of at least one of heating and cooling the fiber. The fiber is twisted around a longitudinal axis thereof. The fiber is folded so as to have a shape of a cylindrical coil. The fiber is formed of linear low-density polyethylene. The following mathematical formula (I) is satisfied: D/d<1 (I), where D represents a mean diameter of the cylindrical coil; and d represents a diameter of the fiber.

Abstract: The reflective display device includes: a cell having: a display surface; a rear surface; side surfaces; and an interior space; a partition in a shape having radial extension dividing the rear surface into N regions; N rear electrodes respectively provided for the N regions on the rear surface; first side electrodes disposed on a display surface side and second side electrodes disposed on a rear surface side; N display-side electrodes separated by a separator zone in a shape having radial extension; a dielectric layer covering the N rear electrodes; polar liquid portions of N colors respectively disposed in N portions in the interior space; and polarity fluid placed within the interior space. A center of the partition matches with a center of the separator zone. A direction of the radial extension of the partition is different from that of the separator zone.

Abstract: The present invention provides a shock recording device, comprising: a vibration energy harvester comprising a first electrode and a second electrode, the vibration energy harvester converting an energy of a shock applied thereto into a potential difference between the first electrode and the second electrode; and a ferroelectric transistor comprising a gate electrode, a source electrode, and a drain electrode, the ferroelectric transistor further comprising a stacked structure of a ferroelectric layer and a semiconductor layer. The gate electrode is electrically connected to the first electrode. The source electrode is electrically connected to the second electrode. This shock recording device does not need a power source used to record a shock.

Abstract: The present invention provides a shock recording device, comprising: a vibration energy harvester comprising a first electrode and a second electrode, the vibration energy harvester converting an energy of a shock applied thereto into a potential difference between the first electrode and the second electrode; and a ferroelectric transistor comprising a gate electrode, a source electrode, and a drain electrode, the ferroelectric transistor further comprising a stacked structure of a ferroelectric layer and a semiconductor layer. The gate electrode is electrically connected to the first electrode. The source electrode is electrically connected to the second electrode. This shock recording device does not need a power source used to record a shock.

Abstract: The present invention provides a shock recording device, comprising: a vibration energy harvester comprising a first electrode and a second electrode, the vibration energy harvester converting an energy of a shock applied thereto into a potential difference between the first electrode and the second electrode; and a ferroelectric transistor comprising a gate electrode, a source electrode, and a drain electrode, the ferroelectric transistor further comprising a stacked structure of a ferroelectric layer and a semiconductor layer. The gate electrode is electrically connected to the first electrode. The source electrode is electrically connected to the second electrode. This shock recording device does not need a power source used to record a shock.

Abstract: A capsule endoscope includes a capsule enclosure having an external wall surface; an image pickup device provided inside the capsule enclosure; a light source provided inside the capsule enclosure; a plurality of electrode structures each including an electrode, a water repellent layer, and a dielectric layer positioned between the electrode and the water repellent layer, the plurality of electrode structures being provided on the external wall surface of the capsule enclosure such that the electrode is positioned on an external wall surface side of the capsule enclosure; a power supply provided inside the capsule enclosure; at least one reference electrode provided on the external wall surface of the capsule enclosure and connected to reference potential of the power supply; and a drive circuit configured to apply a drive voltage to the plurality of electrode structures based on the power supply.

Abstract: The present invention provides a shock recording device, comprising: a vibration energy harvester comprising a first electrode and a second electrode, the vibration energy harvester converting an energy of a shock applied thereto into a potential difference between the first electrode and the second electrode; and a ferroelectric transistor comprising a gate electrode, a source electrode, and a drain electrode, the ferroelectric transistor further comprising a stacked structure of a ferroelectric layer and a semiconductor layer. The gate electrode is electrically connected to the first electrode. The source electrode is electrically connected to the second electrode. This shock recording device does not need a power source used to record a shock.

Abstract: The reflective display device includes: a cell having: a display surface; a rear surface; side surfaces; and an interior space; a partition in a shape having radial extension dividing the rear surface into N regions; N rear electrodes respectively provided for the N regions on the rear surface; first side electrodes disposed on a display surface side and second side electrodes disposed on a rear surface side; N display-side electrodes separated by a separator zone in a shape having radial extension; a dielectric layer covering the N rear electrodes; polar liquid portions of N colors respectively disposed in N portions in the interior space; and polarity fluid placed within the interior space. A center of the partition matches with a center of the separator zone. A direction of the radial extension of the partition is different from that of the separator zone.

Abstract: A gas sensor includes a catalyst layer and a pipe-shaped thermoelectric power generation device. The pipe-shaped thermoelectric power generation device includes an internal through-hole along the axial direction of the pipe-shaped thermoelectric power generation device, a plurality of first cup-shaped components each made of metal, a plurality of second cup-shaped components each made of thermoelectric material, and first and second electrodes disposed at the ends of the pipe-shaped power generation device. The plurality of the first cup-shaped components and the plurality of the plurality of second cup-shaped components are arranged alternately and repeatedly along the axial direction. The catalyst layer is arranged on the internal surface of the internal through-hole. A method for detecting or measuring gas by using the gas sensor includes supplying a fluid containing the gas into the internal through-hole of the gas sensor, and detecting voltage between the first and second electrodes.

Abstract: The thermoelectric power generation element includes a first electrode and a second electrode that are disposed to oppose each other, and a laminate that is interposed between the first and second electrodes, where the laminate has a structure in which Bi2Te3 layers and metal layers containing Ni or Co are laminated alternately, a thickness ratio between the metal layer and the Bi2Te3 layer is in a range of metal layer:Bi2Te3 layer=20:1 to 0.5:1, lamination surfaces of the Bi2Te3 layers and the metal layers are inclined at an inclination angle ? of 10° to 60° with respect to a direction in which the first electrode and the second electrode oppose each other, and a temperature difference generated in a direction perpendicular to the direction in the element generates a potential difference between the first and second electrodes.

Abstract: A pipe-shaped thermoelectric power generating device includes an internal through-hole along the axis direction of the pipe-shaped thermoelectric power generation device; a plurality of first cup-shaped components each made of metal; a plurality of second cup-shaped components each made of thermoelectric material; a first electrode; a second electrode. The plurality of first cup-shaped components and the plurality of second cup-shaped components are arranged alternately and repeatedly along the axis direction. The first electrode and the second electrode are provided respectively at one end and at the other end of the pipe-shaped thermoelectric power generation device.

Abstract: A fuel cell capable of operating under a high temperature environment and under a low humidity environment and a method for generating an electric power with use of the fuel cell. The fuel cell comprises an electrolyte membrane, an anode electrode, and an cathode electrode. In each of the anode electrode and the cathode electrode, a catalyst is held on a catalyst support, and an electrolyte covers the catalyst and the catalyst support. The cathode electrolyte is composed of SnO2, NH3, H2O, and H3PO4. A molar ratio X represented by X?NH3/SnO2 is not less than 0.2 and not more than 5, and a molar ratio Y represented by Y?P/Sn is not less than 1.6 and not more than 3.

Abstract: A fuel cell capable of operating under a high temperature environment and under a low humidity environment and a method for generating an electric power with use of the fuel cell. The fuel cell comprises an electrolyte membrane, an anode electrode, and an cathode electrode. In each of the anode electrode and the cathode electrode, a catalyst is held on a catalyst support, and an electrolyte covers the catalyst and the catalyst support. The cathode electrolyte is composed of SnO2, NH3, H2O, and H3PO4. A molar ratio X represented by X?NH3/SnO2 is not less than 0.2 and not more than 5, and a molar ratio Y represented by Y?P/Sn is not less than 1.6 and not more than 3.

Abstract: An object of the present invention is to provide a fuel cell that operates in a temperature range of not lower than 100° C., and a method for manufacturing such a fuel cell. The fuel cell of the present invention has a proton conductive gel, an anode electrode, and a cathode electrode, the proton conductor being sandwiched between the anode electrode and the cathode electrode, in which the proton conductive gel is composed of SnO2, NH3, H2O, and H3PO4, and provided that the molar ratio represented by NH3/SnO2 is X, and the molar ratio represented by P/Sn is Y, X is not less than 0.2 and not greater than 5, and Y is not less than 1.6 and not greater than 3.

Abstract: An object of the present invention is to provide a fuel cell that operates in a temperature range of not lower than 100° C., and a method for manufacturing such a fuel cell. The fuel cell of the present invention has a proton conductive gel, an anode electrode, and a cathode electrode, the proton conductor being sandwiched between the anode electrode and the cathode electrode, in which the proton conductive gel is composed of SnO2, NH3, H2O, and H3PO4, and provided that the molar ratio represented by NH3/SnO2 is X, and the molar ratio represented by P/Sn is Y, X is not less than 0.2 and not greater than 5, and Y is not less than 1.6 and not greater than 3.

Abstract: An aluminum secondary battery exhibiting favorable characteristics is provided. The present invention relates to a non-aqueous electrolyte comprising an electrolyte containing Al(CF3SO3)3 and a room temperature molten salt of a quaternary ammonium salt where CF3SO3? is anion, and to an aluminum secondary battery containing that non-aqueous electrolyte.

Abstract: An aluminum secondary battery exhibiting favorable characteristics is provided. The present invention relates to a non-aqueous electrolyte comprising an electrolyte containing Al(CF3SO3)3 and a room temperature molten salt of a quaternary ammonium salt where CF3SO3? is anion, and to an aluminum secondary battery containing that non-aqueous electrolyte.

Abstract: A material having a negative or low thermal expansion coefficient and composed substantially of a single crystal system is provided. The material is an oxide represented by the chemical formula ((R4+M2+)1-xA3+2x)(QO4)3 (where R stands for at least one tetravalent metal element selected from Zr and Hf; M stands for at least one divalent metal element selected from Mg, Ca, Sr, Ba, and Ra; Q stands for at least one hexavalent metal element selected from W and Mo; and A stands for at least one trivalent metal element selected from Al, Sc, Y, Lu, Ga, and In; 0<x<1) and composed substantially of a single crystal system.

Abstract: It is a principal object of the present invention to provide low thermal expansion materials able to answer to the needs of various uses. The present invention relates to low thermal expansion materials constituted substantially from a crystalline body represented by a compositional formula RM(QO4)3, wherein R represents at least one selected from Zr and Hf, M represents at least one selected from Mg, Ca, Sr, Ba and Ra, and Q represents at least one selected from W and Mo.