Tracking the motion of charges in a terahertz light field by femtosecond X-ray diffraction
Article Abstract:
Femtosecond time-resolved X-ray diffraction, a phase-sensitive analogue to inelastic X-ray scattering, is used to measure the lattice motions that sustain terahertz light propagation in ferroelectric lithium tantalate, LiTaO3. The extension of other X-ray methods to the femtosecond timescale could be used for studies in complex systems, where electric fields couple to multiple degrees of freedom.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
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Holed up in a natural crystal
Article Abstract:
New X-ray diffraction techniques are used to determine the structure of the polyhedrin protein of silkworm cytoplasmic polyhedrosis virus (CPV) at 2-Angstrom resolution from microcrystals grown in vivo. The analysis has shown that it is possible to use these polyhedra to make ultra-stable protein chips, in which the protein of interest is protected from dehydration and other damage.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2007
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Molecular dynamics of cyclically contracting insect flight muscle in vivo
Article Abstract:
Changes in thick-filament structure and actin-myosin interactions in living, flying Drosophila is shown with the use of synchrotron small-angle X-ray diffraction. Images of 340 mus duration every 625 mus are recorded to create an eight-frame diffraction movie, with each frame reflecting the instantaneous structure of the contractile apparatus.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
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