Sumitomo Electric Industries, Limited

National Institute of Advanced Industrial Science and Technology

Tanaka Kikinzoku Kogyo K.k.

Tanaka Kikinzoku Kogoy K.k.

A School Corporation Kansai University

Tomoko Ishikawa

Junichi Taniuchi

Hitoshi Kubo

Yuusuke Ohshima

Toshifumi Hosoya

Moriyasu Ichino

Isao Karube

Noriaki Nakamura

Masao Gotoh

Hideaki Nakamura

Hiroaki Takahashi

Nobuyuki Matsumura

Shingo Kaimori

Kazuhiro Kuwa

Takahiko Kitamura

Kenichi Inoue

Yoshiteru Tsuchiya

Hidenori Takanezawa

Syunsuke Kato

Hirokazu Shiraishi

Shoso Shingubara

Fumihiro Inoue

The present invention is a metal colloid solution comprising: colloidal particles consisting of metal particles consisting of one or two or more metal(s) and a protective agent bonding to the metal particles; and a solvent as a dispersion medium of the colloidal particles, wherein: a chloride ion concentration per a metal concentration of 1 mass % is 25 ppm or less; and a nitrate ion concentration per a metal concentration of 1 mass % is 7500 ppm or less. In the present invention, adsorption performance can be improved with adjustment of the amount of the protective agent of the colloidal particles. It is preferable to bind the protective agent of 0.2 to 2.5 times the mass of the metal particles.

Metal colloidal solution and method for producing the same

The present invention provides a method for treating a substrate that supports metal fine particles for forming a plating layer on a circuit pattern or TSVs in various substrates, in which further micronization treatment is enabled compared with the conventional methods, and the formation of a stable plating layer is enabled. The present invention is a method for treating a substrate, the method including bringing a substrate into contact with a colloidal solution containing metal particles in order to support the metal particles that serve as a catalyst for forming a plating layer on the substrate, in which the colloidal solution contains metal particles formed of Pd and having a particle size of 0.6 nm to 4.0 nm and a face-to-face dimension of the (111) plane of 2.254 &#x212b; or more. When an organic layer such as SAM is formed on a surface of the substrate before this treatment, the binding force of the Pd particles can be increased.

Method for treating substrate that support catalyst particles for plating processing

A method for supporting a catalytic metal on the surface of a carrier by bringing an aqueous catalytic metal salt solution into contact a porous carrier. The method includes the steps of: impregnating the carrier with a liquid hydrophobic organic compound before bringing the aqueous catalytic metal salt solution into contact with the carrier, and drying the impregnated carrier to volatilize the hydrophobic organic compound on the surface of the carrier, followed by bringing the carrier into contact with the aqueous catalytic metal salt solution; and then bringing a reducing agent into contact with the catalytic metal salt on the surface of the carrier to reduce the catalytic metal salt to undergo insolubilization treatment. The catalytic component is supported in a region from the surface of the carrier to a depth of 50 &#x3bc;m or more and 500 &#x3bc;m or less. The supported state of the catalytic component is made controllable, and the catalytic component can be supported in the inner part of the carrier with a suitable depth.

Method for producing surface-supported catalyst

A biosensor measurement device for providing accurate measurement results within a short period of time by using only a very small amount of sample. The biosensor measurement device includes a power source, which is connected to a voltage regulator, a measurement instrument, and a controller for supplying power. When the biosensor chip is connected to the biosensor measurement device and a voltage is applied, the measurement instrument begins the measurement of a current value for the biosensor. When the measured current value or a measured charge value is greater than a reference value, the measurement is terminated in accordance with an instruction issued by the controller, and when the value is smaller than the reference value, the measurement is continued in accordance with a controller instruction.

Biosensor measurement machine, biosensor measurement system and biosensor measurement method

Device for measuring constituents in the blood

Growing community of inventors

Ibaraki, Japan

Tomoko Ishikawa