A hydrogel stretches and contracts in response to temperature changes / ヒドロゲルアクチュエータの変形動作

This video shows a hydrogel developed at RIKEN stretching and contracting in response to a change in temperature. As you can see from the video, when it stretches in one orientation is simultaneously gets thicker in the other, like a muscle, as it does not take in extra water like many hydrogels. RIKEN press release: New hydrogel stretches and contracts like a heat-driven muscle Credit: Kim et al., Nature Materials (2015) 開発したヒドロゲルアクチュエータを加熱すると、ナノシート面間距