介绍了用于制备单分散高精度球形微粒子的脉冲微孔喷射技术,说明了该技术的工作原理,根据所能制备材料的熔点不同,分为低熔点压片式喷射设备和高熔点传动杆式喷射设备.脉冲微孔法制备出的粒子具有单分散,粒径均一可控,圆球度高,热历史一致的优点,通过介绍该方法制备的粒子在电子封装、生物工程、微成型、金属熔滴的快速凝固分析、增材制造等领域的应用,说明了该技术蕴涵的巨大潜力.可以预见,随着研究的深入,该技术因其独有的特点将具有更广阔的发展.%A novel technology called pulsated orifice ejection method (POEM ) and used for preparing mono-sized and high-precision spherical micro particles was introduced in this article .The working principle of the technique was illustrated and it was in two modes :low-melting point diaphragm mode and high-melting point rod mode ,depending on the different melting points of materials .The particles prepared by POEM have the advantages of mono-sized ,uniform and controllable particle size ,high sphericity ,and consistent thermal history .By introducing the application of particles prepared by this method ,showing the huge application prospects of this technology in electronic packaging ,bioengi-neering ,micro-fabrication ,rapid solidification analysis of metal droplets ,additive manufacturing and so on .With the development of POEM ,this technology is predicted to have wider prospects due to its unique characteristics.
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