Page 40 - Principles and Applications of NanoMEMS Physics
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26 Chapter 1
Figure 1-24. Microcontact printing. (a) The elastic stamp (PDMS) is inked in thiols and then
pressed against the gold film previously deposited in the wafer. (b) The stamp is retracted,
transferring a pattern of self-assembled thiols. (After [34].)
Molding is effected by pressing the elastic stamp against a liquid polymer
on the wafer, shown in Figure 1-25, which causes the polymer to flow into
Figure 1-25. Molding. (a) The elastic stamp is pressed against the deposited liquid polymer,
which flows into the recesses/channels of the mold. (b) Upon curing, the polymer solidifies
into the mold pattern. (After [34].)
