Cover Image, Volume 127, Issue 4


original image

UV-ozone treatment serves for cleaning injection-molded polypropylene micro-cantilevers for sensing purposes, as presented by Helmut Schift and colleagues on page 2363. Treatment durations of more than 20 minutes, however, give rise to characteristic surface morphologies, which reflect the inhomogeneous degree of crystallinity of the cantilever surface. The optical micrograph of a cantilever surface treated for 120 minutes elucidates the surface cracks, which indicate polymer flow and crystallization directions. The multi-focus image of the Leica DMRX system with an L Plan 10Č ocular and a PL Fluotar 50Č/0.85 objective underwent polarization and interference filtering.