Phys.org May 18, 2022
A team of researchers in the US (Pennsylvania State University, Michigan Technological University) developed and demonstrated a mechanism that enhances the magnitude of the piezoelectric coefficient of a ceramic. Through extensive characterization conducted using high-resolution microscopy and diffraction techniques in conjunction with the computational models they found that chemical heterogeneity and anisotropy are the underlying mechanisms that govern the piezoelectric performance of ceramic materials. They showed that by aligning all the grains in a ceramic material along certain crystallographic axes they could get a very high piezoelectric response. They achieved close to 2,000 picocoulombs per Newton. Their findings have the potential to lead to improved and novel piezoelectric materials, leading to better robotics, sensors, transformers, ultrasonic motors, and medical technologies…read more. Open Access TECHNICAL ARTICLEÂ
Phenomenological illustration and phase-field simulation of enhanced piezoelectricity… Credit: Advanced Science (2022), 16 March 2022Â