
441
14
Micromachining
14.1 Introduction
Recently, the need for semiconductor devices, extremely compact electrical
circuits, and integrated circuit packages that contain devices having micro
dimensions has led to the introduction of micromachining. The circuit board
must have microholes if relays and switches are required to be assemblies of
microsized parts. Fuel injection nozzles for automobile have become smaller
in size and more accurate to solve many environmental problems. In the area
of biotechnology that includes biological cells and genes, the tools required to
handle them must have microeffectors. Miniaturization of medical tools for ...