National Institute of Advanced Industrial Science and Technology

Alps Electric Co., Ltd.

Gunma University

Other

Daikin Industries, Ltd.

The Furukawa Electric Co., Ltd.

Japan Science and Technology Agency

Asahi Kasei Kabushiki Kaisha

Mitsui Chemicals Tohcello, Inc.

Eamex Corporation

Kinji Asaka

Takushi Sugino

Tomomasa Takatsuka

Isao Takahashi

Ken Mukai

Kenichi Mitsumori

Motoo Yumura

Takeshi Saito

Shinya Komura

Keisuke Oguro

Nobuaki Haga

Tatsuhiro Okada

Shingo Sewa

Soshi Shiraishi

Kazuo Onishi

Yuta Saito

Toru Morita

Kenji Hata

Takuya Arase

Katsutoshi Suzuki

Yasuichi Ono

Takuzo Aida

Takanori Fukushima

Hideto Nakagawa

Hiroaki Rikihisa

Michihiro Shimada

Atsuko Ogawa

Masato Tachibana

Teppei Sugawara

Shuhei Ikenaga

Tetsuya Horiuchi

Zicai Zhu

Mitsuo Takase

Yujin Motoyama

The purpose of the present disclosure is to provide a CNT fiber that is constituted of aligned carbon nanotubes (CNTs), is thin, has little irregularity in thickness, has excellent winding properties when undergoing coiling processing, and has superior conductivity. Provided is a CNT fiber constituted of carbon nanotubes (CNTs) having a thickness of 0.01 &#x3bc;m-3 mm, having a coefficient of variation for irregularity in thickness of 0.2 or less, having a distribution rate a for deviation from roundness of 40% or greater, and a distribution rate b of 70% or greater. Also provided is a method for manufacturing the CNT fiber.

Fiber constituted from carbon nanotube and method for manufacturing same

An object of this invention is to create an actuator in which the amount of deformation is maintained and no displacement in the reverse direction occurs, even when a constant voltage is continuously applied for a long period of time. As a means for achieving the above object, the invention provides a conductive thin film comprising a polymer gel containing at least one organic molecule selected from the group consisting of electron-donating organic molecules and electron-withdrawing organic molecules, a nano-carbon material, an ionic liquid, and a polymer.

Actuator element using carbon electrode

An object of the present invention is to provide a CNT yarn having excellent conductivity and strength, and a method for producing the same. The present invention provides a drawn yarn comprising carbon nanotubes and having a drawing rate of 10 to 50%.

Drawn carbon nanotube yarn and production method therefor

A conductive thin film is composed of a polymer gel including carbon nanotubes, an ionic liquid, and a polymer. At least one selected from the group consisting of fat and oil and a water repellent is included in the polymer gel or in a surface of the polymer gel.

Actuator element including fat and oil or water repellent

The invention provides a sensor capable of detecting deformation. The deformation sensor has a structure in which an ion-conductive polymer layer is sandwiched between soft electrodes, wherein non-uniform ion distribution is generated in the ion-conductive polymer layer by deformation, thereby generating a potential difference between the electrodes.

Deformation sensor comprising an ion-conductive polymer layer

An electroconductive film for an actuator is formed from a gel composition including carbon nanofibers, an ionic liquid, and a polymer. The carbon nanofibers are produced with an aromatic mesophase pitch by melt spinning.

Carbon nanofiber actuator

A polymer actuator element includes an electrolyte layer and electrode layers, in which the electrode layer includes an activated carbon nanofiber and a carbon nanohorn.

Polymer actuator element

A method for producing an aggregated thread structure includes (a) a process of dispersing carbon nanotube to a first solvent, which is water or a mixed solvent containing organic solvent and water, with a surfactant, to create a dispersion and (b) a process of injecting the dispersion, in which carbon nanotube is dispersed, to a condensing liquid, which is a second solvent that differs from the first solvent, to thereby aggregate and spin carbon nanotube. The aggregated thread structure containing carbon nanotube has: a bulk density of 0.5 g/cmor more; a weight reduction rate up to 450&#xb0; C. of 50% or less; a G/D ratio for resonance Raman scattering measurement of 10 or more; and an electric conductivity of 50 S/cm or more.

Aggregated thread structure, production method thereof, and electric wire using the same

An electrode film for a polymer actuator element contains a fluororesin, a fluorine rubber, an ionic liquid, and a conductive filler.

Electrode film for polymer actuator element, and polymer actuator element comprising the same

A polymer actuator includes: a pair of electrode layers made of an ionic liquid, a polymer, and carbon nanoparticles; and an electrolyte layer provided between the pair of electrode layers, wherein the carbon nanoparticles are a mixture of carbon nanotubes (hereinafter, referred to as CNTs) and carbon nanohorns (hereinafter, referred to as CNHs), a ratio by weight of the carbon nanoparticles to the total weight of the ionic liquid, the polymer, and the carbon nanoparticles contained in the pair of electrodes is equal to or higher than 25 wt % and equal to or lower than 80 wt %, a mixing ratio of the CNTs to the CNHs contained in the carbon particles is in a range of (CNT):(CNH)=1:1 to 3:1, and a ratio by weight of the polymer is equal to or higher than 17.7 wt % and equal to or lower than 30.2 wt %.

Polymer actuator

The present invention provides an actuator exhibiting improved performance. The actuator is formed of an electrically conductive thin film formed from an ionic liquid and carbon nanotubes having an aspect ratio of not less than 10; or an electrically conductive thin film formed from an ionic liquid and carbon nanotubes having a length of not less than 50 &#x3bc;m.

Electrically conductive thin film formed from an ionic liquid and carbon nanotubes having a high aspect ratio, and actuator element comprising the thin film

Growing community of inventors

Ikeda, Japan

Kinji Asaka