Kyushu University

Sumitomo Riko Company Limited

Shingi Kumagai

Hitoshi Yoshikawa

Hideyuki Otsuka

Kazunobu Hashimoto

Shigeaki Takamatsu

Atsushi Takahara

Yota Kokubo

Ryosuke Matsuno

An ion-immobilized metal oxide particle includes a metal oxide particle and an anion that itself includes a) a reactive group that consists of an alkoxysilyl group and b) an anionic group consisting of a carboxylate (&#x2014;COO) group or a sulfonate (&#x2014;SO) group, the anion being immobilized to the metal oxide particle via a silanol group derived from the reactive group. An elastomer includes the ion-immobilized metal oxide particle, and a transducer includes the elastomer.

Reactive ionic liquid, and ion-immobilized metal oxide particle, ion-immobilized elastomer, and transducer using same

A reactive ionic liquid to be used as an ionic component that is contained in an ion-containing layer in a transducer arranged in contact with a high-resistance layer as a dielectric layer of the transducer, and is restrained from migrating from the ion-containing layer to the high-resistance layer on application of a voltage is provided. The reactive ionic liquid comprises an ion pair that consists of an anion and a cation. In the reactive ionic liquid, (a) the anion comprises (a1) a reactive group that consists of an alkoxysilyl group and (a2) an anionic group consisting of a carboxylate (&#x2014;COO) group or a sulfonate (&#x2014;SO) group. (b) The cation (b1) consists of an imidazolium, ammonium, pyrrolidinium, morpholinium, or phosphonium cation, and (b2) does not comprise an N&#x2014;H group or a P&#x2014;H group.

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Toyohashi, Japan

Shingi Kumagai