Fig. 3
From: Contactless Laser-Assisted Patterning of Surfaces for Bio-Adhesive Microarrays
Optical microscope images of dot-like micropatterns with a period of 150 μm on PEMA-coated glass irradiated with (a) 100 pulses at 134 mJ/cm² (with a total exposure dose of 13.4 J/cm²), inset SEM picture and (b) 110 pulses also at 134 mJ/cm² (with a total exposure dose of 14.8 J/cm²) on PEMA-coated glass using 5% w/w dl-camphorquinone. The photopolymerization threshold for this composition is 12.8 J/cm²