Ontology highlight
ABSTRACT:
SUBMITTER: He C
PROVIDER: S-EPMC7211004 | biostudies-literature | 2020 May
REPOSITORIES: biostudies-literature
He Cheng C Lai Hua-Shan HS He Bo B Yu Si-Yuan SY Xu Xiangyuan X Lu Ming-Hui MH Chen Yan-Feng YF
Nature communications 20200508 1
Topological insulators (TIs) can host an insulating gapped bulk with conducting gapless boundary states in lower dimensions than the bulk. To date, various kinds of classical wave TIs with gapless symmetry-protected boundary states have been discovered, promising for the efficient confinement and robust guiding of waves. However, for airborne sound, an acoustic analogue of a three-dimensional TI has not been achieved due to its spinless nature. Here, we experimentally demonstrate a three-dimensi ...[more]