March 2007 issue
Cover illustration: False-colour images created by chemically selective patterning of a polymethylmethacrylate-polyacrylonitrile (PMMA/PAN) bilayer by focused soft X-rays in the beamline 5.3.2 scanning transmission X-ray microscope at the Advanced Light Source (see Wang, Stöver, Hitchcock and Tyliszczak, pages 181-190). Top: logo of Lawrence Berkeley National Laboratory (left) and logo of the Canadian Light Source (right). PMMA = red, PAN = blue. Bottom left: Smokie the cat. PMMA = brown, PAN grey. Bottom right: grey-scale colour-separated image used as source for the patterned image of Smokie (courtesy of S. G. Urquhart). Scale bars = 1 µm.