A semiconductor device comprises an insulation layer, an active semiconductor layer formed on an upper surface of the insulation layer, and a plurality of fins formed on the insulation layer. As the user dries his hands on the loop of toweling and pulls downwardly on the toweling, a limited amount of clean paper toweling is pulled from the roll and an equal amount is wrapped about the take-up roller. Instead, each data packet transmitted in a time-slot includes a header label or preamble indicating to which of multiple possible receivers a data packet is directed. The compacted green material samples are baked for 1-3 hours in an Air oven in the temperature range of 90-130\xb0 C. 5\xd710\u22124\u03c0 rms over four hours, and a spatial phase resolution of 10\u22123 \u03c0 with a lateral resolution of 100 \u03bcm.