It is a long way from basic machine parts such as screws and shafts to the USD 500,000 mask aligners required to produce integrated circuits. But for engineers, selecting the exact part for a given task is simply good practice, however simple or complex the project may be.
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While working on developing new 3D-printing techniques for his Ph.D., Assistant Professor of Mechanical and Biomedical Engineering Rafael Song became interested in building smaller objects. "I started learning about microfabrication techniques, which allowed me to build things on a micro-scale level," said Song.