Organizing DNAzymes into an Array

The DNAzyme used in these experiments cleaves itself in the presence of Cu2+.  The idea behind the experiment is shown in the schematic below: 


The pattern in the top section is a striped repeat of 32 nm. where the yellow stripes are from DNA hairpins and the white stripes are from the DNAzyme.  Upon exposure to Cu2+, the DNAzyme cleaves and the stripe separation increases to 64 nm.  The AFM patterns for the two states are shown below:


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