Background and emerging applications of acoustic metamaterials: a forum on classical waves

Advancements in physical concepts and manufacturing technology such as 3D printing have generated an exciting field of research in recent years that is known as 'metamaterials'. When applied to electromagnetic waves, novel applications have emerged in sensing or cloaking devices. In contrast, acoustic metamaterials may provide solutions to acoustic problems as well as a conceptual and developmental platform for condensed-matter physics. National Science Review invited Prof. Hong Chen of Tongji University to organize a forum to discuss this unique field of acoustic metamaterials in physical research. <b>Che Ting Chan</b> () Professor, Department of Physics, Hongkong University of Science and Technology <b>Yan-Feng Chen</b> () Professor, College of Engineering and Applied Sciences, Nanjing University <b>Zhengyou Liu</b> () Professor, School of Physical & Electronic Sciences, Wuhan University <b>Jie Zhu</b> () Professor, School of Physical Science and Engineering, Tongji University <b>Hong Chen</b> () (Chair) Professor, School of Physical Science and Engineering, Tongji University.