A New Method for Determining the Composition of Core–Shell Nanoparticles via Dual-EDX+EELS Spectrum Imaging
Particle & Particle Systems Characterization
MetadataShow full item record
Rossouw, D., Knappett, B. R., Wheatley, A., & Midgley, P. (2016). A New Method for Determining the Composition of Core–Shell Nanoparticles via Dual-EDX+EELS Spectrum Imaging. Particle & Particle Systems Characterization https://doi.org/10.1002/ppsc.201600096
Simultaneously acquired microanalytical X-ray and electron energy loss signals are obtained from a bimetallic core–shell nanoparticle system (FePt@Fe$_3$O$_4$). The signals are decomposed using independent component analysis and the extracted components are used to separately quantify the composition of the spatially overlapping core and shell phases in the nano-heterostructure. The utilization of the complementary strengths of energy dispersive X-ray and electron energy-loss spectroscopy microanalysis has enabled the quantification of both light and heavy elements in a single spectrum image acquisition.
nanoparticles, core-shell, EDX, EELS, ICA
Is supplemented by: https://doi.org/10.17863/CAM.415
D.R. acknowledges support from the Royal Society’s Newton International Fellowship scheme. P.A.M acknowledges financial support from the European Research Council under the European Union’s Seventh Framework Programme (FP7/ 2007-2013)/ERC grant agreement 291522-3DIMAGE. P.A.M. also acknowledges financial support from the European Union’s Seventh Framework Programme of the European Commission: ESTEEM2, contract number 312483. B.R.K. thanks the UK EPSRC for financial support (EP/J500380/1).
European Research Council (291522)
EC FP7 CP WITH CSA (312483)
External DOI: https://doi.org/10.1002/ppsc.201600096
This record's URL: https://www.repository.cam.ac.uk/handle/1810/256888