Fig. 4: Devices produced by the USS process.
From: Programmable and rapid fabrication of complex-shape ceramics
a Schematic illustration and digital image of stamping micropatterns on ceramics by the USS process. b Surface images of BT ceramics with stamped micropatterns including spherical shape, hexagonal shape and prism array, showing the potential of the USS approach in manipulating the surface microstructures of ceramic materials. Scale bar 300 um. c The depth distribution of the pressed micropatterns, showing smooth and similar profiles with the corresponding master patterns. Note that the variation in the depth of each unit in the array is caused by the slope of the stamping head during processing. Scale bar 300 um. d Application demonstration of the twisted piezoceramic, serving as the actuation part in a pump. The pump is in operation (Supplementary Movie 4). Scale bar 1 cm. e Photograph of the arch-shaped alumina ceramic that serves as an armor for electronics. Compared with metals and plastics, the ceramic armors are anti-RF absorption, corrosion-resistant and thermally stable. f A design for fabricating ceramic materials in arbitrary shapes that involves a Joule heater and two programmable load arrays for guiding the ceramic sample deform.
