While it's not nearly as glamorous as DRAM, you can't make a practical semiconductor device without good ohmic contacts . : ) Edit : Not that Flash is the only type of semiconductor memory that actively uses tunneling; EEPROM and SONOS ( both similar to Flash ), MRAM, and a novel construction called DT-RAM ( " DT " for " direct tunneling " ) .-- mattb @ 2007-04-12T15 : 21Z
