Abstract: Pulsated orifice ejection method (POEM) enables the preparation of mono-sized spherical liquid droplets and solidified particles with uniform size and consistent thermal history. It holds significant advantages in various fields including research in solidification theory, microelectronic packaging, metal 3D printing, and powder metallurgy. This review article begins with the simulation study of metal droplet solidification prepared using POEM, summarizing the applications of these micro-droplets, which have not reached the cooling solidification state, in solder bump deposition, 3D printing, and droplet-by-droplet atomization using centrifugal force. Additionally, it discusses the applications of micro-particles, which have reached the cooling solidification state, in electronic packaging, core-shell structures, metal glasses, and other aspects. Furthermore, it discusses current issues and future prospects in POEM applications, offering valuable insights into fields related to mono-sized spherical micro-droplets, solidified micro-particles, and solidification theory research.
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