LLNLの研究者が、外部刺激に応答するアーキテクトマテリアルの進展を示す(LLNL researchers chart progress in architected materials that respond to external stimuli)


2022-06-23 アメリカ・ローレンスリバモア国立研究所(LLNL)

Nature Reviews Materials誌に掲載された論文の中で、LLNLの研究者たちは、熱、磁気または電気力、化学または電気化学反応、機械的変形にさらされると特定の形状に変形し、新しい特性を示すことができる応答性アーキテクト材料における進展について概要を述べている。また、各アプローチのプログラミングと変形メカニズムについて説明し、埋め込み型医療機器、ロボット工学、化学的または機械的センサーなどの潜在的なアプリケーションを検証しています。


空間と時間の中で設計されたレスポンシブマテリアル Responsive materials architected in space and time

Xiaoxing Xia,Christopher M. Spadaccini & Julia R. Greer
Nature Reviews Materials  Published:20 June 2022


Rationally designed architected materials have attained previously untapped territories in materials property space. The properties and behaviours of architected materials need not be stagnant after fabrication; they can be encoded with a temporal degree of freedom such that they evolve over time. In this Review, we describe the variety of materials architected in both space and time, and their responses to various stimuli, including mechanical actuation, changes in temperature and chemical environment, and variations in electromagnetic fields. We highlight the additive manufacturing methods that can precisely prescribe complex geometries and local inhomogeneities to make such responsiveness possible. We discuss the emergent physics phenomena observed in architected materials that are analogous to those in classical materials, such as the formation and behaviour of defects, phase transformations and topologically protected properties. Finally, we offer a perspective on the future of architected materials that have a degree of intelligence through mechanical logic and artificial neural networks.