Dr. Dina Carbone - MAX IV Laboratory
Brilliant opportunities with X-ray Nanobeams
Time: Thu 2014-12-04 09.00 - 11.00
Location: FA32
Participating: Dr. Dina Carbone
Title: Brilliant opportunities with X-ray Nanobeams
Abstract:
The recent development of optics for X-ray focusing allows routine production of beam focus in the sub-micron down to few tens nanometers range [1]. This development has fostered the progress of a wide range of scanning microscopy approaches that are becoming interesting for an increasing number of research fields, such as nanomaterials, environment, biology, to cite a few. Along with scanning microscopy approaches, nanobeams are useful tools for single object investigations, in contrast to conventional ensemble average measurements, especially relevant when the ensemble information is not representative of the single nanostructures [2]. Furthermore, nanobeams can be used as a “local probe” to access information at the nano-scale in specific location within complex or inhomogeneous systems [3] (e.g. heterostructures, device-like structures, etc).
Finally, the bright beams produced at new synchrotron radiation facilities, like MAX IV in Lund, will allow anextremely efficient focusing and the production of nanobeams with high degree of coherence[5]. This characteristic can be exploited for the visualisation of phase defects [4] or in coherent diffraction imaging methods for a "inverse" imaging of the internal structure of nano and meso crystals with a resolution bridging the scanning and the scattering techniques [6].
In this lecture I will give a brief overview of different uses of nanobeams, with a special focus on the the future possibilities for scanning microscopy at the beamline NanoMAX of MAX IV.
[1] J. Stangl et al. (2013). "Nanobeam X-Ray Scattering: Probing Matter at the Nanoscale" Wiley-VCH Verlag GmbH & Co ISBN: 978-3-527-41077-4.
[2] A. Biermanns et al. (2014) Phys. Status Solidi RRL, 7: 860
[3] T. Etzelstorfer et al (2014). J. Synchrotron Rad. 21, 111.
[4] V. L. R. Jacques et al. (2013). Phys. Rev. Lett. 111, 065503.
[5] C. Schroer and G. Falkenberg (2014) J. Synchrotron Radiation 21 996
[6] P. Godard et al. (2011). Nat. Comm. 2 568.