Jump to main content
Jump to site search

Issue 14, 2017
Previous Article Next Article

Morphological and chemical transformations of single silica-coated CdSe/CdS nanorods upon fs-laser excitation

Author affiliations

Abstract

Radiation-induced modifications of nanostructures are of fundamental interest and constitute a viable out-of-equilibrium approach to the development of novel nanomaterials. Herein, we investigated the structural transformation of silica-coated CdSe/CdS nanorods (NRs) under femtosecond (fs) illumination. By comparing the same nanorods before and after illumination with different fluences we found that the silica-shell did not only enhance the stability of the NRs but that the confinement of the NRs also led to novel morphological and chemical transformations. Whereas uncoated CdSe/CdS nanorods were found to sublimate under such excitations the silica-coated nanorods broke into fragments which deformed towards a more spherical shape. Furthermore, CdS decomposed which led to the formation of metallic Cd, confirmed by high-resolution electron microscopy and energy dispersive X-ray spectrometry (EDX), whereby an epitaxial interface with the remaining CdS lattice was formed. Under electron beam exposure similar transformations were found to take place which we followed in situ.

Graphical abstract: Morphological and chemical transformations of single silica-coated CdSe/CdS nanorods upon fs-laser excitation

Back to tab navigation

Supplementary files

Publication details

The article was received on 23 Dec 2016, accepted on 17 Mar 2017 and first published on 23 Mar 2017


Article type: Paper
DOI: 10.1039/C6NR09879G
Citation: Nanoscale, 2017,9, 4810-4818
  •   Request permissions

    Morphological and chemical transformations of single silica-coated CdSe/CdS nanorods upon fs-laser excitation

    W. Albrecht, B. Goris, S. Bals, E. M. Hutter, D. Vanmaekelbergh, M. A. van Huis and A. van Blaaderen, Nanoscale, 2017, 9, 4810
    DOI: 10.1039/C6NR09879G

Search articles by author

Spotlight

Advertisements