"SAPPHIRE DISC, 0.5""X0.020"", EA"

PELCO® Sapphire Substrate Discs

The PELCO® Sapphire Discs or wafers are made from high purity clear sapphire (Al2O3), ground and optically clear polished on both sides.  Sapphire has a wide transmission range; from 150 to 6000nm with low absorbance in the 300 to 4500nm range. The discs are ideal as substrates for thin film research and are suitable for optical research. Excellent resistance against a wide range of chemicals. Surface polish to one microinch or better on each face. Tolerances are ±0.001" (0.025mm) in diameter and thickness; flatness to 0.0003" (0.0008mm) or better. Available in 0.5" (12.7mm), 0.75" (19mm) and 1" (25.4mm) diameter with a choice of thickness between 0.010" or 0.125" (0.25 or 3.2mm). 
Wafer Carriers