Ehime University

Kabushiki Kaisha Toyota Jidoshokki

National University Corporation Ehime University

Kabushiki Kaisya Toyota Jidosyokki

Growth Co., Ltd.

Shinfuku Nomura

Hiromichi Toyota

Toshihisa Shimo

Shinobu Mukasa

Hitotoshi Murase

Yoshiaki Hattori

Kyoko Kumagai

Hidetaka Hayashi

Hiroaki Takashima

Kenji Shibata

Shinya Okuda

Tsunehiro Maehara

Hiroshi Yamashita

Makoto Kuramoto

Toyota Hiromichi

Toshiyuki Shimada

According to an embodiment of the present invention, there is provided a device for forming at least a diamond film on a surface of a substrate, the device comprising: a container configured to hold a raw material liquid and to place the substrate in the raw material liquid; an electrode part comprising a positive electrode and a negative electrode and configured to generate a plasma in the raw material liquid; a raw material gas supply part and a carrier gas supply part, each of the raw material gas supply part and the carrier gas supply part being connected to the electrode part; and a power source configured to apply a voltage to the electrode part, wherein the power source is a direct current power source, and the electrode part further comprises an adjunctive member, and the adjunctive member is attached to an electrode at a plasma generation region of the electrode part.

Device for forming diamond film etc. and method therefor

A nanometer-size-particle production apparatus and method are provided which can prevent the occurrence of waste fluids, and which makes quick and continuous syntheses feasible while suppressing damages to the electrode. The nanometer-size-particle production apparatus is for synthesizing nanometer size particles in a liquid by means of plasma in the liquid.

Nanometer-size-particle production apparatus, nanometer-size-particle production process, nanometer-size particles, zinc/zinc oxide nanometer-size particles, and magnesium hydroxide nanometer-size particles

A nanometer-size-particle production apparatus is provided which can prevent the occurrence of waste fluids, and which makes quick and continuous syntheses feasible while suppressing damages to the electrode. The present invention is a nanometer-size-particle production apparatus for synthesizing nanometer-size particles in a liquid by means of plasma in liquid, and comprises: a container for accommodating the liquid therein; an electromagnetic-wave generation device for generating a high-frequency wave, or a microwave; an electrode conductor whose leading end makes contact with the liquid to supply the high-frequency wave or the microwave to the liquid; a covering portion being disposed into the liquid so as to cover a leading-end upside of the electrode conductor; a metallic chip being composed of a metal making a raw material of nanometer-size particles, and having a leading end that is disposed to face to a leading-end section of the electrode conductor; and a feed device for feeding out the leading end of the metallic chip with respect to the leading-end section of the electrode conductor; the leading end of the electrode conductor having a configuration that is a non-edge configuration; and the electrode conductor, except for the leading end, having an axially-orthogonal cross-sectional area that is larger than an axially-orthogonal cross-sectional area of the metallic chip.

This invention is to provide a method for the production of diamond at a high rate and in a high efficiency using in-liquid plasma. The present invention is a method for the production of diamond using electromagnetic waves irradiated to a liquid containing carbon, hydrogen and oxygen in which the ratio of hydrogen atoms to the sum of carbon atoms and hydrogen atoms is from 0.75 to 0.82 and the ratio of carbon atoms to the sum of carbon atoms and oxygen atoms is from 0.47 to 0.58 so as to generate plasma in the liquid.

Method for the production of diamond

An in-liquid plasma electrode according to the present invention is an in-liquid plasma electrode for generating plasma in a liquid and has an electrically conductive member having an electric discharge end surface in contact with the liquid, and an electrically insulating member covering an outer periphery of the conductive member at least except the electric discharge end surface. Preferably, d and x satisfy &#x2212;2d&#x2266;x&#x2266;2d, where d is a length of a minor axis of the cross section when a conductive end portion of the electrically conductive member having the electric discharge end surface has an approximately circular cross section, or d is a length of a short side of the cross section when the conductive end portion has an approximately rectangular cross section, and x is a distance from a reference plane to a plane containing the electric discharge end surface when the reference plane is an end surface of the electrically insulating member that is approximately parallel with the electric discharge end surface. Owing to this construction, it is possible to provide an in-liquid plasma electrode which can simply generate plasma in a wide variety of liquids including a conductive liquid such as water and alcohol, and furthermore an in-liquid plasma generating apparatus having this electrode, and an in-liquid plasma generating method using this electrode.

In-liquid plasma electrode, in-liquid plasma generating apparatus and in-liquid plasma generating method

In an in-liquid plasma film-forming apparatus having: a vesselbeing capable of accommodating a substrate 'S' and a liquid 'L' including raw material therein; an electrodefor in-liquid plasma, electrodewhich is disposed in the vessel; an electric power devicefor supplying electricity to the electrodefor in-liquid plasma; the electrodefor in-liquid plasma is equipped with: a main electrodehaving a discharging end; an auxiliary electrodenot only facing the discharging endbut also being disposed between the discharging endand the substrate &#x201c;S&#x201d; that face each other; and a plasma generating unithaving a space that is demarcated by a surfaceof the discharging endand a surfaceof the auxiliary electrodefacing the surface, and being for generating plasma by means of electricity being supplied to the main electrode

In-liquid plasma film-forming apparatus, electrode for in-liquid plasma, and film-forming method using in-liquid plasma

The process for producing an amorphous carbon film of the present invention is a process for producing an amorphous carbon film comprising contacting a surface of a substrate S with bubbles B which have been formed in a liquid L containing an organic compound and inside which plasma has been generated, so as to form an amorphous carbon film on the surface of the substrate S, and the liquid L contains one or more selected from phenols and alcohols having a carbon number of from 1 to 12. According to the present invention, a hard amorphous carbon film can be formed easily.

Process for producing an amorphous carbon film

A method and apparatus for generating plasma in a liquid. The apparatus includes an ultrasonic wave generator for generating bubbles in the liquid, and an electromagnetic wave generator for continuously irradiating electromagnetic waves to the liquid from within the liquid in order to generate plasma. The method of generating plasma in a liquid includes the steps of generating bubbles in the liquid by irradiating ultrasonic waves in the liquid, and generating plasma in the bubbles by continuously irradiating electromagnetic waves from within the liquid to the bubbles.

Growing community of inventors

Matsuyama, Japan

Shinfuku Nomura