Osaka University

Nippon Steel & Sumikin Chemical Co., Ltd.

Iwatani Corporation

Microwave Chemical Co., Ltd.

Tomohisa Yamauchi

Yasunori Tsukahara

Kei Sakamoto

Yuji Wada

Shuji Inoue

Hiderou Nomoto

Katsuhiro Yamada

In order to provide a method for producing silver nanowires in which a local maximum of optical absorption in the plasmon absorption band can be shifted toward the short wavelength side without making the wire diameter smaller, a method for producing silver nanowires includes a step of heating a mixed liquid of a dispersion of silver nanowires and metal ions of a transition metal that is different from silver, and reducing the metal ions, thereby intermittently precipitating clumps of the transition metal on a surface of the silver nanowires. The thus produced silver nanowires have metal clumps intermittently along the length direction, and a local maximum of optical absorption in the plasmon absorption band of the silver nanowires has been shifted toward the short wavelength side.

Method for producing silver nanowires, silver nanowires, dispersion, and transparent conductive film

A method for producing nickel nanoparticles is described, including a first step of heating a mixture of a nickel carboxylate with 1-12 carbon atoms in its moiety excluding &#x2014;COOH and a primary amine to obtain a complexed reaction solution with a nickel complex foiiiied therein, and a second step of heating the complexed reaction solution by a microwave to obtain a Ni-nanoparticle slurry. In the first step, the heating is preferably conducted at a temperature of 105-175&#xb0; C. for 15 minutes or longer. In the second step, the heating is preferably conducted at a temperature of 180&#xb0; C. or higher.

Method for producing nickel nanoparticles

Growing community of inventors

Osaka, Japan

Tomohisa Yamauchi