Nano Manufacturing: Banknotes From Butterflies

By Amelia Hennighausen - 2013-09-23T13:23:07Z

Photograph by Grant Harder for

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Yellow Room

Engineers wear full clean-room gowns because manufacturing on such a minute scale requires that the several billion holes are not compromised by particles on the master, which would ruin it. The room is yellow to maintain stability for certain chemicals used in the process.