There are provided a method of processing an amorphous material which is capable of forming surface projections of uniform height in desired positions on the amorphous material, and a magnetic disk substrate using the amorphous material. The interface may include a conductor that carries read and write gate signals. The emissive element, separator, and metallic holder are heated to accelerate diffusion bonding between the emissive element and separator, and between the separator and metallic holder. By processing the returned power and the illuminating power with a transfer function, the RFID verifier may provide an absolute indicia of quality for the interrogated RFID tag. , polypeptides which are selected from random or semi-random polypeptide libraries. The grain bin includes an unloading system which enables the grain to be unloaded from the grain bin without the need to remove the covering and which substantially reduces the dust typically produced during unloading of currently used temporary grain bins.