Erasable Tattoos Work Like Scratch'n'Sniff
When a laser "scratches," dye microcapsules dissolve away.
By Morgen Peck
Nov 16, 2007 6:00 AMNov 12, 2019 4:45 AM
Microscopic beads that were produced with a red-brown iron oxide to create a red-brown ink.These microscopic beads are 5-6 microns in size and are suspended in solution. Images courtesy of Freedom-2, Inc. | NULL
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