Seminars

PIER PHOTON SCIENCE COLLOQUIUM:
X-ray micro- and nano-imaging: Optics, laboratory sources and systems

by Hans M. Hertz (Department of Applied Physics, Royal Institute of Technology, Stockholm, Sweden)

Friday, May 6, 2011 from to (Europe/Berlin)
at Bldg. 48e, L202
Description
Progress in laboratory-scale x-ray micro- and nano-imaging is reviewed. In the soft x-ray regime we demonstrate laboratory water-window microscopy with <25-nm-resolution, 3D microtomography of cryo-fixed biological samples, and aqueous-state imaging of environmental colloids. The progress relies heavily on our developments in diffractive optics, for resolution (13 nm Ni zone plates, compound zone plates), efficiency (Ni-Ge zone plates, now also at 13 nm) and for new contrast mechanisms (DIC and Zernike zone plates). In hard x-rays (10-30 kV) we discuss diffractive optics for high-brilliance synchrotron sources and free-electron lasers as well as phase-contrast x-ray biomedical imaging with 10-µm detail based on new laboratory x-ray source, the electron-impact liquid-metal-jet-anode x-ray tube.