2012/09/01 by Yusuke Inuzuka, Katsuki Onishi, Shunsuke Kinoshita +7
Chemistry · Engineering · Materials Science · #Acoustics #Actuator #Chemistry #Composite material #Dielectric materials and actuators #Electrical engineering #Ferroelectric and Piezoelectric Materials #Materials science #Physics #Piezoelectricity #Polymer #Supercritical fluid #Transducer #Vibration Control and Rheological Fluids #Voltage
paper · doi:10.1143/jjap.51.09ld15
openalex publication_date 2012/09/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/27
To realize a new piezoelectric chiral polymer actuator, we studied the motion induced by the shear piezoelectricity of a poly(L-lactic acid) (PLLA) film under the application of an ac voltage. First, PLLA was subjected to a supercritical CO 2 treatment to change its high-order structure, resulting in an improvement in its piezoelectricity. Then, we designed a PLLA film roll transducer, which consisted of a piece of the treated PLLA film rolled into a long thin roll. To demonstrate the transducer, we placed it vertically on a fixed stand. A plastic hemispherical container was placed on the upper end face of the transducer. It was found that the container rotated smoothly in the counterclockwise direction when an ac voltage was applied. We emphasize that no special complex mechanical parts were used in this study.