Other

Asahi Engineering Co., Ltd.

Tokyo University of Agriculture and Technology

Tadamasa Fujimura

Itec Co., Ltd.

Masato Sone

Hideo Yoshida

Shigeru Shiozaki

Nobuyoshi Sato

Valeri Yu Dolmatov

Seizo Miyata

Kentaro Abe

Kiyohito Sakon

Takeshi Sako

Junji Watanabe

Mituru Akashi

Hideo Miyake

Toshiyuki Watanabe

Yoshihiro Asai

Fumiko Iwao

Hiroe Asai

Eizo Watanabe

Yoshinori Matsuoka

Masayasu Iida

An aqueous suspension liquid of finely divided diamond particles comprising 0.05 to 160 parts by weight of a finely divided diamond particles in 1000 parts of water, wherein; (i) the finely divided diamond particles have an element composition consisting mainly of 72 to 89.5% by weight of carbon, 0.8 to 1.5% of hydrogen, 1.5 to 2.5% of nitrogen, and 10.5 to 25.0% of oxygen; (ii) and, almost all of said diamond particles are in the range of 2 mu to 50 nm in diameters thereof (80% or more by number average, 70% or more by weight average), (iii) and, said finely divided diamond particles exhibit a strongest peak of the intensity of the Bragg angle at 43.9&#xb0; (20&#xb1;20), strong and characteristic peaks at 73.5&#xb0; (20&#xb1;20) and 95&#xb0; (20&#xb1;2&#xb0;), a warped halo at 17' (20&#xb1;2&#x2032;), and no peak at 26.5&#xb0;, by X-ray diffraction (XRD) spectrum analysis using Cu-Ku radiation when dried, (iv) and, specific surface area of said diamond particles when dry state powder is not smaller than 1.50&#xd7;105 m2/kg, and substantially all the surface carbon atoms of said particles are bonded with hetero atoms, and the total absorption space of said powder is 0.5 m3/kg or more, when dried. The diamond particles are very active and dispersible in aqueous liquid in stable, and have essentially same mechanical properties as that of usual diamonds.

Stable aqueous suspension liquid of finely divided diamond particles, metallic film containing diamond particles and method of producing the same

An aqueous suspension liquid of finely divided diamond particles comprising 0.05 to 160 parts by weight of a finely divided diamond particles in 1000 parts of water, wherein; (i) the finely divided diamond particles have an element composition consisting mainly of 72 to 89.5% by weight of carbon, 0.8 to 1.5% of hydrogen, 1.5 to 2.5% of nitrogen, and 10.5 to 25.0% of oxygen; (ii) and, almost all of said diamond particles are in the range of 2 nm to 50 nm in diameters thereof (80% or more by number average, 70% or more by weight average), (iii) and, said finely divided diamond particles exhibit a strongest peak of the intensity of the Bragg angle at 43.9&#xb0; (2&#x3b8;&#xb1;2&#xb0;), strong and characteristic peaks at 73.5&#xb0; (2&#x3b8;&#xb1;2&#xb0;) and 95&#xb0; (2&#x3b8;&#xb1;2&#xb0;), a warped halo at 17&#xb0; (2&#x3b8;&#xb1;2&#xb0;), and no peak at 26.5&#xb0;, by X-ray diffraction (XRD) spectrum analysis using Cu&#x2014;K&#x3b1; radiation when dried, (iv) and, specific surface area of said diamond particles when dry state powder is not smaller than 1.50&#xd7;10m/kg, and substantially all the surface carbon atoms of said particles are bonded with hetero atoms, and the total absorption space of said powder is 0.5 m/kg or more, when dried. The diamond particles are very active and dispersible in aqueous liquid in stable, and have essentially same mechanical properties as that of usual diamonds.

An apparatus for treating the surface of an object to be treated comprising introducing a surface treatment fluid into a reaction vessel () capable of receiving an object, introducing the surface treatment fluid into a separation vessel () after the object is subjected to surface treatment, and circulating the surface treatment fluid, from which a contaminant has already been removed, to the reaction vessel (). At the time of treatment on the surface of the object, a circulation passage for the surface treatment fluid including the reaction vessel () is communicated and the surface treatment fluid is constantly circulated through the circulation passage.

Method for treating the surface of object and apparatus thereof

A method for activating the surface of a base material and an apparatus thereof, which is suited to be utilized for pretreatment in electrochemical treatment such as, for example, electroplating or the like, in which the surface of a base material such as metal can be subjected to degreasing treatment and oxide film removing treatment simultaneously, efficiently and rationally, in which productivity can be enhanced and the equipment cost can be reduced, and in which a waste solution can be rationalized so that the solution can be reutilized and the environmental pollution can be prevented. A method for activating the surface of a base material in which the surface of a member to be treated is subjected to degreasing treatment or oxide film removing treatment. Pressurized carbon dioxide is dissolved in a predetermined quantity of water, thereby preparing an oxide film removing solution having a predetermined acidic concentration.

Method for activating surface of base material and apparatus thereof

The present invention provides a method and an apparatus for preparing a silicon-containing solid film, which can form a thin film uniformly over a wide area. Raw-material fluid comprising a silane derivative and a hydrocarbon derivative is mixed with carrier fluid comprising carbon dioxide to form a supercritical condition. Further, an active-state is produced in the raw-material fluid of the supercritical fluid by a catalytic reaction with at least one metal catalyst selected from a group consisting of platinum, tungsten, cobalt, nickel, iron or an alloy of each of them. The fluid is blown to the substrate, thereby forming a silicon-containing solid film or a hydrocarbon-containing solid film on the substrate.

Method and apparatus for preparing thin film

An aqueous suspension liquid of finely divided diamond particles comprising 0.05 to 160 parts by weight of a finely divided diamond particles in 1000 parts of water, wherein; (i) the finely divided diamond particles have an element composition consisting mainly of 72 to 89.5% by weight of carbon, 0.8 to 1.5% of hydrogen, 1.5 to 2.5% of nitrogen, and 10.5 to 25.0% of oxygen; (ii) and, almost all of said diamond particles are in the range of 2 nm to 50 nm in diameters thereof (80% or more by number average, 70% or more by weight average), (iii) and, said finely divided diamond particles exhibit a strongest peak of the intensity of the Bragg angle at 43.9&#xb0; (2&#x3b8;&#xb1;2&#xb0;), strong and characteristic peaks at 73.5&#xb0; (2&#x3b8;&#xb1;2&#xb0;)and 95&#xb0; (2&#x3b8;&#xb1;2&#xb0;), a warped halo at 17&#xb0; (2&#x3b8;&#xb1;2&#xb0;), and no peak at 26.5&#xb0;, by X-ray diffraction (XRD) spectrum analysis using Cu&#x2014;K&#x3b1; radiation when dried, (iv) and, specific surface area of said diamond particles when dry state powder is not smaller than 1.50&#xd7;10m/kg, and substantially all the surface carbon atoms of said particles are bonded with hetero atoms, and the total absorption space of said powder is 0.5 m/kg or more, when dried. The diamond particles are very active and dispersible in aqueous liquid in stable, and have essentially same mechanical properties as that of usual diamonds.

The present invention provides a carrier for immobilizing a bio-derived polymer, and especially, the present invention provides a carrier of diamond fine particle for immobilizing a DNA, RNA, protein and peptide, as well as a DNA chip substrate, a carrier for trapping virus and a vaccine. The carrier is prepared by the steps comprising: preparing an initial mixture including a diamond and a non-diamond by means of explosion of a detonating agent; subjecting the initial mixture to an oxidation treatment to obtain a suspension solution including the diamond; and separating a phase including the diamond. According to the present invention, after the oxidation treatment, a basic material having per se volatility or to generate a decomposed material having volatility is added, to neutralize with nitric acid, and thereby obtained diamond fine particle has a functional group on the surface thereof.

Carrier of a diamond fine particle for immobilizing virus

A method for treating the surface of an object to be treated includes introducing a surface treatment fluid into a reaction vessel () capable of receiving an object, introducing-the surface treatment fluid into a separation vessel () after the object is subjected to surface treatment, and circulating the surface treatment fluid, from which a contaminant has already been removed, to the reaction vessel (). At the time of treatment on the surface of the object, a circulation passage for the surface treatment fluid including the reaction vessel () is communicated and the surface treatment fluid is constantly circulated through the circulation passage.

There is provided a metal thin film comprising a metal plate and a diamond particle dispersed in the metal plate. According to the present invention, the metal thin film has a film thickness of 5 nm to 35000 nm. The diamond particle is dispersed almost homogeneously over the direction of the film thickness of the metal thin film. The metal thin film has the diamond particle at a concentration of 1 to 12%. According to the present invention, based on conversion into an equivalent circle, the diamond particle has a first particle size distribution with respect to a first particle of a first particle size of 16 nm or less, at a first number average existence rate of 50% or more; the diamond particle has a second particle size distribution with respect to a second particle having a second particle size of 50 nm or more, at a second number average existence rate of substantially 0%; and the diamond particle has a third particle size distribution with respect to a third particle having a third particle size of 2 nm or less, at a third number average existence rate of substantially 0%.

Metal thin film dispersing a super-fine diamond particle, a metal material having the metal thin film, and a method for preparing the same

An aqueous suspension liquid of finely divided diamond particles comprising 0.05 to 160 parts by weight of a finely divided diamond particles in 1000 parts of water, wherein; (i) the finely divided diamond particles have an element composition consisting mainly of 72 to 89.5% by weight of carbon, 0.8 to 1.5% of hydrogen, 1.5 to 2.5% of nitrogen, and 10.5 to 25.0% of oxygen; (ii) and, almost all of said diamond particles are in the range of 2 nm to 50 nm in diameters thereof (80% or more by number average, 70% or more by weight average), (iii) and, said finely divided diamond particles exhibit a strongest peak of the intensity of the Bragg angle at 43.9&#xb0; (2&#x3b8;&#xb1;2&#xb0;), strong and characteristic peaks at 73.5&#xb0; (2&#x3b8;&#xb1;2&#xb0;)and 95&#xb0; (2&#x3b8;&#xb1;2&#xb0;), a warped halo at 17&#xb0; (2&#x3b8;&#xb1;2&#xb0;), and no peak at 26.5&#xb0;, by X-ray diffraction (XRD) spectrum analysis using Cu-K&#x3b1; radiation when dried, (iv) and, specific surface area of said diamond particles when dry state powder is not smaller than 1.50&#xd7;10m/kg, and substantially all the surface carbon atoms of said particles are bonded with hetero atoms, and the total absorption space of said powder is 0.5m/kg or more, when dried. The diamond particles are very active and dispersible in aqueous liquid in stable, and have essentially same mechanical properties as that of usual diamonds.

The present invention relates to an anodic oxidation method and a treatment apparatus thereof which is suitable, for example, for generation of an oxide film and electropolishing of aluminum, capable of generating an oxide film at a low cost and rapidly by eliminating the use of electrolytic solution having a strong acid property and using a carbonated water as the electrolytic solution, capable of improving the oxide film generating operation and rationalizing the water discharging treatment, capable of preventing increase in temperature of the electrolytic solution without a need of a special equipment, capable of generating an oxide film in a stable manner and obtaining a good oxide film by eliminating the generation of oxide in the vicinity of an object to be treated, and capable of rationalization of the oxide film generating treatment and enhancing the productivity by using supercritical carbon dioxide. An object () to be treated is electrolyzed as an anode in an electrolytic solution. An oxide film is generated on the surface of the object (). A pressurized carbon dioxide is dissolved in a predetermined quantity of water (). An oxide film is generated by serving a carbonated water of a predetermined acid concentration as an electrolytic solution.

Anodic oxidation method and treatment apparatus thereof

A novel method of electrochemical treatment such as electroplating, etc. and an electrochemical reaction apparatus thereof which is high in reactability and able to be electrochemically reacted efficiently, which is small or zero in amount of generation of liquid waste such as electrolytic solution and cleaning liquid and therefore, amicable to the environment, and in which it is no more required to clean the electrode, etc. with cleaning liquid after reaction. Electrochemical reaction is executed in a reaction vessel ( ) containing matter ( ) which is in a supercritical or subcritical state and an electrolytic solution ( ), and after reaction, the supercritical or subcritical matter ( ) is shifted into a state of the matter ( ) before being shifted into a critical state.

Growing community of inventors

Koganei, Japan

Masato Sone