Fig. 2.
Scanning electron microscopy images of (A) PUMA replica of an array of closely spaced high-aspect-ratio columns. (B) DRIE-Si master that is opposite in polarity as (A), and (C) PDMS replica made from DRIE-Si master in (B).
Scanning electron microscopy images of (A) PUMA replica of an array of closely spaced high-aspect-ratio columns. (B) DRIE-Si master that is opposite in polarity as (A), and (C) PDMS replica made from DRIE-Si master in (B).