
119Protein Micropatterning Techniques for Tissue Engineering
are too compliant will cause the relief patterns to collapse or the spaces in between
patterns will sag under load, preventing transfer of especially submicron-level pat-
terns. Additionally, the surface wettability of the stamp plays an important role in
ink physiosorption and transfer. The most common material used for μCP is PDMS,
though other materials such as poly(ether-block-ester), polyolen elastomers, or even
hydrogels such as agarose have been used [48]. PDMS stamps offer easy fabrication
through thermal curing, are relatively inexpensive and easy to acquire, and have a
suitable ...