Nec Corporation

National Institute of Advanced Industrial Science and Technology

Japan Science and Technology Agency

Meijo University

Daikin Industries, Ltd.

Japan Science and Technology Corporation

Sii Nanotechnology Inc.

Shinshu University

Japanese Foundation for Cancer Research

Fuchita Nanotechnology Ltd.

Sumio Iijima

Masako Yudasaka

Ryota Yuge

Kenji Hata

Motoo Yumura

Don N Futaba

Masataka Hasegawa

Masatou Ishihara

Yoshinori Koga

Tsutomu Yoshitake

Kazuo Tsugawa

Akira Koshio

Yoshimi Kubo

Takeshi Azami

Kiyotaka Shiba

Jaeho Kim

Keiichi Tanaka

Satoshi Nakayama

Pulickel Madhavapanicker Ajayan

Akikazu Odawara

Tomohiro Isogai

Sadanori Hattori

Daisuke Kasuya

Shunji Bandow

Eiji Fuchita

Takatoshi Yamada

Yuegang Zhang

Toshinari Ichihashi

Hideki Yorimitsu

Katsumi Kaneko

Kumiko Ajima

Tatsuya Murakami

Daisuke Kase

Jin Miyawaki

Kazutomo Suenaga

Kaori Hirahara

Hidekazu Touhara

Yoshio Nojima

Katsuyuki Murata

Minfang Zhang

The object of the present invention is to provide a production method and a production apparatus for a thin film of aligned carbon nanotubes. The present invention relates to a production method for an aligned carbon nanotube film having a film thickness of less than 1000 nm, including a step of causing a part of a dispersion solvent liquid of a carbon nanotube dispersion liquid to permeate to a lower surface side of a filter paper while causing the carbon nanotube dispersion liquid to flow in one direction on an upper surface of the filter paper, and a production apparatus that can be used for said method.

Production method for thin film of aligned carbon nanotube

The object of the present invention is to provide a separation method and a separation apparatus for carbon nanotubes capable of separating a mixture of carbon nanotubes in a highly efficient, inexpensive and simple manner. The present invention relates to a carbon nanotube separation method comprising: a step of preparing a dispersion liquid including a mixture of two or more types of carbon nanotubes having different zeta potentials; a step of introducing the dispersion liquid into a flow path formed between a first electrode having holes for allowing the dispersion liquid to pass therethrough, and a second electrode arranged so as to face the first electrode; a step of applying a DC voltage to the first electrode and the second electrode while the dispersion liquid is flowing through the flow path; and, a step of continuously collecting a dispersion liquid including carbon nanotubes separated to a first electrode side upon application of the voltage from an opposite side to the flow path with respect to the first electrode, and at the same time, continuously collecting a dispersion liquid including carbon nanotubes separated to a second electrode side from a downstream side of the flow path.

Carbon nanotube separation method and separation apparatus

A substance-encapsulating carbon nanohorn aggregate which has improved chemical stability by isolating the encapsulated substance from outside and which is useful as a targeting material which can be led from the outside of the body or as a contrast medium by holding the encapsulated substance in an aggregated form, and a process for producing the same are provided. The substance-encapsulating carbon nanohorn aggregate is characterized in that the encapsulated substance is aggregated in a central part of the carbon nanohorn aggregate or a neighborhood thereof with being isolated from outside. The process includes aggregating a substance to be encapsulated in a central part or a neighborhood thereof by a heat treatment.

Substance-encapsulating carbon nanohorn aggregate and process for producing the same

A technique for forming graphene which solves problems involved in formation of graphene by a thermal CVD method and a resin carbonization method that a high temperature is used and the treatment time is long and can form graphene at a lower temperature in a shorter time is provided. The above problems are solved by performing hydrogen plasma treatment on a copper foil substrate having an organic substance applied thereon by use of a surface wave microwave plasma treatment device and forming graphene on the copper foil substrate by the hydrogen plasma treatment.

Method for producing graphene, and graphene

Small crystal size is the issue of a conventional method for formation of a film of graphene by a thermal CVD technique using a copper foil as a substrate. A carbon film laminate is described in which graphene having a larger crystal size is formed. The carbon film laminate is configured to include a sapphire single crystal having a surface composed of terrace surfaces which are flat at the atomic level, and atomic-layer steps, a copper single crystal thin film formed by epitaxial growth on the substrate, and graphene deposited on the copper single crystal thin film, and thus enabling formation of graphene having a large crystal size.

Carbon film laminate

An apparatus for manufacturing carbon nanohorns includes a production chamber configured to irradiate a solid carbon material with a laser beam to produce a product containing carbon nanohorns; and a separation mechanism configured to separate the product produced in the production chamber into a lightweight component and a heavyweight component. The heavyweight component includes carbon nanohorn aggregate with high purity, and high-purity carbon nanotubes can be obtained by collecting the heavyweight component.

Apparatus and method for manufacturing carbon nanohorns

A carbon nanohorn carried material for producing a carbon nanotube by a chemical vapor deposition (CVD) method, including a catalytic metal or a compound thereof contained inside carbon nanohorns or supported on exterior walls of the carbon nanohorns is provided. A carbon nanotube is produced by a CVD reaction using the carbon nanohorn carried material. A novel technical means for producing a carbon nanotube which does not use any noncarbon type carrier, can easily collect and purify the carbon nanotube and can control the length of the carbon nanotube can be provided.

Carbon nanohorn carried material and process for producing carbon nanotube

Disclosed is a carbon film which has optical characteristics of retaining a high transparency and being high in refractive index and low in double refractivity, is excellent in electric insulating performance, can be applied to various base materials with good adhesiveness, and can be formed at low temperature. Also disclosed is a laminate including a carbon film and a method for producing the laminate.

Carbon film

An aligned carbon nanotube bulk structure in which various properties such as density and hardness are controlled depending on the place is provided. An aligned carbon nanotube bulk structure having different density portions is an aligned carbon nanotube bulk structure provided with a high-density portion applied with a density-increasing treatment and an low-density portion and having a plurality of carbon nanotubes (CNT) aligned in a predetermined direction, in which the structure has 1:3 or more of the degree of anisotropy in the alignment direction and in the direction vertical to the alignment direction and, in the (002) peak of the X-ray diffraction data in the high density region, the intensity of X-ray incident along the orientation direction is higher than that of the X-ray intensity from the direction vertical to the alignment direction, and the degree of alignment is defined by specific conditions.

Aligned carbon nanotube bulk structure having portions different in density

This invention provides an aligned single-layer carbon nanotube bulk structure, which comprises an assembly of a plurality of aligned single-layer carbon nanotube and has a height of not less than 10 &#x3bc;m, and an aligned single-layer carbon nanotube bulk structure which comprises an assembly of a plurality of aligned single-layer carbon nanotubes and has been patterned in a predetermined form. This structure is produced by chemical vapor deposition (CVD) of carbon nanotubes in the presence of a metal catalyst in a reaction atmosphere with an oxidizing agent, preferably water, added thereto. An aligned single-layer carbon nanotube bulk structure, which has realized high purify and significantly large scaled length or height, its production process and apparatus, and its applied products are provided.

Single-walled carbon nanotube and aligned single-walled carbon nanotube bulk structure, and their production process, production apparatus and application use

An aligned carbon nanotube bulk structure capable of attaining high density and high hardness not found so far. The aligned carbon nanotube bulk structure has a plurality of carbon nanotubes (CNTs) applied with a density-increasing treatment, and having alignment in a predetermined direction, the structure has a degree of anisotropy of 1:3 or more between the direction of alignment and the direction vertical to the direction of alignment, and the intensity by irradiating X-rays along the direction of alignment is higher than the intensity by irradiating X-rays from the direction vertical to the direction of alignment at a (002) peak in X-ray diffraction data, and the degree of alignment thereof satisfies predetermined conditions.

Aligned carbon nanotube bulk aggregate, process for producing the same and uses thereof

A nanocarbon aggregate including a graphite aggregate including a graphene sheet having a petal shape and a nanohorn. The petal-shaped graphite aggregate achieves a reduction in the particulate size and a higher dispersibility by allowing the edge of the petal shape to locally absorb a metal, a metal complex and a metal oxide. The nanocarbon aggregate is used for a catalyst support.

Nanocarbon aggregate and method for manufacturing the same

This invention provides an aligned single-walled CNT aggregate comprising a substrate, fine particles of iron catalyst with a density of 1&#xd7;10to 1&#xd7;10/cmdisposed on an alumina co-catalyst above the substrate, and a plurality of single-walled CNTs grown from the fine particles of the iron catalyst, in which the plurality of single-walled CNTs have a specific surface area of 600 m/g to 2600 m/g, and a weight density from 0.002 g/cmto 0.2 g/cm, and the alignment degree which satisfies a few of specific conditions. This invention also provides a bulk aligned single-walled carbon nanotube aggregate and a powdered aligned single-walled carbon nanotube aggregate.

Aligned single-walled carbon nanotube aggregate, bulk aligned single-walled carbon nanotube aggregate, and powdered aligned single-walled carbon nanotube aggregate

There is provided a fluorine storage material comprising a novel fluorinated carbon nanohorn, which stores a large amount of fluorine per its unit mass, withstand repeated use for fluorine storage, and enables a high purity fluorine gas to be taken out by a safe and efficient method, and also there is provided a method of taking out a fluorine gas by applying heat to the fluorine storage material or placing the fluorine storage material in a pressure-reduced atmosphere.

Fluorine storage material

Growing community of inventors

Tokyo, Japan

Sumio Iijima