Near-room-temperature martensitic actuation profited from one-dimensional hybrid perovskite structure

• DOI: 10.1038/s41467-022-34356-9
• Publication Date: 2022-11-03T14:02:46Z
• Authors: Bei-Dou Liang; Chang-Chun Fan; Cheng-Dong Liu; Chao-Yang Chai; Xiang-Bin Han; Wen Zhang
• Keywords: Thermoelastic damping; Pseudoelasticity; Diffusionless transformation

Martensitic transformation, usually accompanied by ferroelastic and thermoelastic behaviors, is an interesting useful mechanical-related property upon external stimuli. For molecular crystals, however, martensitic systems to show reversible stimuli-actuation behaviors are still limited because of a lack designability frequent crystal collapse due large stress releases during the transformations. Here, one-dimensional hybrid perovskite semiconductor (NMEA)PbI3 (NMEA = N-methylethylammonium) was prepared following dimensionality reduction design principle. The undergoes transformations, which attributed weak intermolecular interactions among chains that easily trigger interchain shearing movement. actuation behavior occurring phase transition very close room temperature demonstrated behave as mechanical actuator for switching. This work provides effective approach designing actuators with promising applications in next-generation intelligence devices.