Hirakata, Japan
Hirakata, Japan

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There is are disclosed a piezoelectric thin film having less non-uniform portions and holding satisfactory piezoelectric characteristics, a method of manufacturing the film, a piezoelectric element using the piezoelectric thin film, and an ink jet system recording head using the piezoelectric element. In the piezoelectric thin film of perovskite crystals formed on a substrate by a sol-gel process and represented by a general formula Pb_((1x))La_(x )(Zr_(y)Ti_(1y)) O_(3 )(where 0x<1, 0.05y1), a film thickness of the thin film is 1000 nm or more and 4000 nm or less, and a difference between a maximum value and a minimum value of y in an arbitrary portion of the thin film is 0.05 or less.


Provided is a lead-free dielectric ceramics having a low leakage current value, and a bismuth iron oxide powder as a raw material thereof. The bismuth iron oxide powder includes at least: (A) grains including a bismuth iron oxide having a perovskite-type crystal structure; (B) grains including a bismuth iron oxide having a crystal structure classified to a space group Pbam; and (C) grains including a bismuth iron oxide or a bismuth oxide having a crystal structure that is classified to a space group I23. The dielectric ceramics are made of bismuth iron oxide in which the bismuth iron oxide crystals having the crystal structure classified to the space group Pbam are distributed at a grain boundary of crystal grains of the bismuth iron oxide crystals having the perovskite-type crystal structure.


Patent
Kyocera Corporation and Fuji Chemical Company | Date: 2012-10-01

An epoxy resin composition is provided which includes a polycrystalline structure comprised of a plurality of monocrystalline structures. The plurality of monocrystalline structures are respectively comprised of a plurality of silicon oxide colloidal particles regularly aligned in epoxy resin. The plurality of silicon oxide colloidal particles are not contacted with each other. The mean distance between the silicon oxide colloidal particles adjacent to each other is less than 330 nm. The mean particle size of the plurality of silicon oxide colloidal particles is less than 290 nm. The concentration of the plurality of silicon oxide colloidal particles is 10-50% by mass. A relative permittivity of 4 or more is ensured. A method for producing the epoxy resin composition is provided. Building materials, ornaments and optical materials, each using the epoxy resin composition, are also provided.


Provided is a lead-free piezoelectric material having a satisfactory and stable piezoelectric constant and electric insulation property in a wide practical temperature range. Provided is a piezoelectric material, including a perovskite-type metal oxide represented by the following general formula (1) as a main component, the piezoelectric material containing Mn in a content of 0.01 part by weight or more and 0.80 part by weight or less with respect to 100 parts by weight of the perovskite-type metal oxide: (Li_(x)Na_(y)K_(z)Ba_()Bi_(0.5+))_(a)(Ti_(+)Fe_()) O_(3 ). . . (1), where 0.8000.999, 00.150, 0.0010.050, ++=1, 0x0.050, 0.045y0.450, 0.045z0.450, 0.450x+y+z0.500, and 0.980a1.020.


Patent
Fuji Chemical Co. | Date: 2013-02-14

There is disclosed a method for forming a CNT film. In the method, the CNT film is formed by applying a dispersion liquid including CNT and a silica colloid onto a base material and drying the dispersion liquid.


Patent
Fuji Chemical Co. | Date: 2015-01-21

The biofilm inhibitor of the present invention contains a lectin, at least one recognizable sugar chain of which is N-acetylglucosamine (G/LcNAc).


Patent
Nagoya City University and Fuji Chemical Co. | Date: 2014-01-15

[Problem] To provide a method for producing a colloidal crystal, wherein the method is easily controlled and is capable of dealing with a wide range of types of colloidal particle.[Solution] The method for producing a colloidal crystal in the present invention is characterized by comprising a preparation step of preparing a colloidal dispersion liquid, in which colloidal particles are dispersed in a liquid comprising an ionic surfactant and a colloidal crystal can be formed due to temperature changes, and a crystallization step of formation of a colloidal crystal by changing the temperature of the colloidal dispersion liquid from a temperature region in which the colloidal crystal is not formed to a temperature region in which the colloidal crystal is formed.


Patent
Fuji Chemical Co. | Date: 2013-03-11

The biofilm inhibitor of the present invention contains a lectin, at least one recognizable sugar chain of which is N-acetylglucosamine (G/LcNAc).


Patent
Nagoya City University and Fuji Chemical Co. | Date: 2012-03-03

[Problem] To provide a method for producing a colloidal crystal, wherein the method is easily controlled and is capable of dealing with a wide range of types of colloidal particle. [Solution] The method for producing a colloidal crystal in the present invention is characterized by comprising a preparation step of preparing a colloidal dispersion liquid, in which colloidal particles are dispersed in a liquid comprising an ionic surfactant and a colloidal crystal can be formed due to temperature changes, and a crystallization step of formation of a colloidal crystal by changing the temperature of the colloidal dispersion liquid from a temperature region in which the colloidal crystal is not formed to a temperature region in which the colloidal crystal is formed.


Patent
Fuji Chemical Co. | Date: 2016-03-01

The biofilm inhibitor of the present invention contains a lectin, at least one recognizable sugar chain of which is N-acetylglucosamine (GlcNAc).

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