Incineration research

Exploring the Mpemba effect: a universal ice pressing enables porous ceramics

“…Piezoceramics are key enabling materials in actuators, sensors, transducers, and memory devices. 14,15 Compact piezoceramics usually exhibit high piezoelectric responses 16,17 but a low hydrostatic figure of merit and poor acoustic coupling. [18][19][20][21][22][23] To attain balanced performance or abnormal responses, researchers have designed threedimensional (3D) microstructures such as holes and tunnels in piezoelectric ceramics and formed metamaterials, smart composites, and transducers.…”

“…[18][19][20][21][22][23] To attain balanced performance or abnormal responses, researchers have designed threedimensional (3D) microstructures such as holes and tunnels in piezoelectric ceramics and formed metamaterials, smart composites, and transducers. 17,18,23,24 Unfortunately, the construction of lightweight porous bodies usually suffers from the significant loss of mechanical properties and piezoelectricity, thus making the integration of compactness and porosity contradictory. 25 Is it possible to fabricate globally porous but locally compact materials?…”