A problem with micromechanics is that the commonly used fabrication methods and materials are relatively expensive. To be competitive on the market, new low-cost materials and manufacturing methods are necessary. Different micro-devices have already been made, e.g., micropumps. Micro-replication also enables different materials like polymers, metals and ceramics to be used. The research was conducted through part design, mold fabrication, experimental analysis, and quality test. The process parameters including injection speed, melt temperature, mold temperature and packing pressure on quality of micropumps were investigated. The injection molded part was actuated by a piezoelectric disc. Flow test was conducted to check the micropump performance.
Many micro devices have been successfully injection molded. Efforts need to be made to identify the significant factors that affect micro filling behaviors. The objective of this paper is to investigate the application of injection molding and injection compression molding processes to produce diffraction gratings. A mold was designed to produce a diffraction rating connected with the fixed bushing. The combined part was verified to have a good diffraction performance. Integrated grating eliminates the assembly cost and error. Photolithography was applied to make the mold insert. The Taguchi method and parametric analysis were applied to study the effects of molding parameters on grating quality. The design, fabrication of structured mold surfaces and the results of the replication by injection molding (IM) and injection compression molding (ICM) are presented and compared.