Abstract
Gallium can be used as a temporary glue for semiconducting wafer mounting. The good electric contact between the electrode, the gallium layer, and the semiconducting wafer makes the spark cutting and the semiconducting wafer form shaping much easier. After wafer spark cutting, the residual gallium can be easily removed by a cotton swab from the surface of the wafer in warm isopropyl alcohol (IPA). Also, in this report, improved circuitry of the electric discharge machine for easy and economical construction is described. Gallium arsenide wafers have been form shaped by the present method.
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