Print Email Facebook Twitter Nanoparticle discrimination based on wavelength and lifetime-multiplexed cathodoluminescence microscopy Title Nanoparticle discrimination based on wavelength and lifetime-multiplexed cathodoluminescence microscopy Author Garming, M.W.H. (TU Delft ImPhys/Charged Particle Optics) Weppelman, I.G.C. (TU Delft ImPhys/Charged Particle Optics) De Boer, Pascal (University Medical Center Groningen) Martínez, Felipe Perona (University Medical Center Groningen) Schirhagl, Romana (University Medical Center Groningen) Hoogenboom, J.P. (TU Delft ImPhys/Charged Particle Optics) Moerland, R.J. (TU Delft ImPhys/Quantitative Imaging) Date 2017-09-14 Abstract Nanomaterials can be identified in high-resolution electron microscopy images using spectrally-selective cathodoluminescence. Capabilities for multiplex detection can however be limited, e.g., due to spectral overlap or availability of filters. Also, the available photon flux may be limited due to degradation under electron irradiation. Here, we demonstrate single-pass cathodoluminescence-lifetime based discrimination of different nanoparticles, using a pulsed electron beam. We also show that cathodoluminescence lifetime is a robust parameter even when the nanoparticle cathodoluminescence intensity decays over an order of magnitude. We create lifetime maps, where the lifetime of the cathodoluminescence emission is correlated with the emission intensity and secondary-electron images. The consistency of lifetime-based discrimination is verified by also correlating the emission wavelength and the lifetime of nanoparticles. Our results show how cathodoluminescence lifetime provides an additional channel of information in electron microscopy. To reference this document use: http://resolver.tudelft.nl/uuid:686d9383-458b-4fed-969d-73844495cd43 DOI https://doi.org/10.1039/c7nr00927e ISSN 2040-3364 Source Nanoscale, 9 (34), 12727-12734 Part of collection Institutional Repository Document type journal article Rights © 2017 M.W.H. Garming, I.G.C. Weppelman, Pascal De Boer, Felipe Perona Martínez, Romana Schirhagl, J.P. Hoogenboom, R.J. Moerland Files PDF c7nr00927e.pdf 4.66 MB Close viewer /islandora/object/uuid:686d9383-458b-4fed-969d-73844495cd43/datastream/OBJ/view