Progress of low-frequency sound absorption research utilizing intelligent materials and acoustic metamaterials Chang, Longfei ; Jiang, Ajuan ; Rao, Manting ; Ma, Fuyin ; Huang, Haibo ; Zhu, Zicai ; Zhang, Yu ; Wu, Yucheng ; Li, Bo ; Hu, Ying Abstract Publication: RSC Advances Pub Date: November 2021 DOI: 10.1039/D1RA06493B Bibcode: 2021RSCAd..1137784C