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. Author manuscript; available in PMC: 2014 Nov 11.
Published in final edited form as: Small. 2013 May 8;9(21):3704–3713. doi: 10.1002/smll.201202075

Figure 1.

Figure 1

A) (i – iv) Process flow of mold fabrication, showing a machinable wax mold. Left Bottom left is showing SEM images of drilling bits with different tip sizes and bottom right is the fabricated negative MN mold in machinable wax material. B) (i) Schematic of epoxy casting onto the wax mold and optical image of epoxy MN, (ii) Polydimethylsiloxane (PDMS) negative MN mold fabricated from an epoxy-based MN generated from machinable wax, (iii) digital image of pure silk MN prepared in a PDMS mold.