UCL  IRIS
Institutional Research Information Service
UCL Logo
Please report any queries concerning the funding data shown on the profile page to:

http://www.ucl.ac.uk/finance/secure/research/post_award
Please report any queries concerning the student data shown on the profile page to:

Email: portico-services@ucl.ac.uk

Help Desk: http://www.ucl.ac.uk/ras/portico/helpdesk
Publication Detail
Coherent x-ray diffraction imaging of ZnO nanostructures under confined illumination
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Xiong G, Huang XJ, Leake S, Newton MC, Harder R, Robinson IK
  • Publisher:
    IOP PUBLISHING LTD
  • Publication date:
    02/03/2011
  • Journal:
    NEW J PHYS
  • Volume:
    13
  • Print ISSN:
    1367-2630
  • Language:
    EN
  • Keywords:
    CRYSTALS, STRAIN
  • Addresses:
    Xiong, G
    UCL
    London Ctr Nanotechnol
    London
    WC1H 0AH
    England

    Swiss Light Source
    Villigen
    Switzerland

    UK & Diamond Light Source
    Didcot
    OX11 0DE
    Oxon
    England
Abstract
Coherent x-ray diffraction imaging has been used to study a single ZnO nanorod in a confined illuminating condition. The focused beam size is smaller than the length of the nanorod, and the diffraction intensity is strongly dependent on the illumination position. The density maps show that the nanorod width in the radial direction is around 210 nm and has a length of 1.5 mu m, in agreement with the scanning electron microscope measurement. Reconstructed phase maps show a maximum phase change of 0.8 radians. The reconstructed direct space structures reveal the exit wavefront profile, which includes that of the focused x-ray beam. The beam profile presents in reconstructions some 'hill and valley' surface features with a typical size of a few tens of nanometres and are attributed to the noise due to the slow variation of the focused beam intensity along the boundary. A single ZnO tetrapod has been investigated with the same method to recover the beam profile in the horizontal direction.
Publication data is maintained in RPS. Visit https://rps.ucl.ac.uk
 More search options
UCL Authors
London Centre for Nanotechnology
University College London - Gower Street - London - WC1E 6BT Tel:+44 (0)20 7679 2000

© UCL 1999–2011

Search by