Nature CommunicationsUltra-soft organic combined film with piezoelectricity induced by liquid-liquid interface polar engineeringYongkang ZhangXiaonan HuZhaonan YanSiyu ZhangJiling ZhaoHao SunShuhai LiuYong Qin2025-07-11Full textDOI https://doi.org/10.1038/s41467-025-61526-2