@conference {2081, title = {3D Atomic Scale Quantification of Nanostructures and their Dynamics Using Model-based STEM}, year = {2020}, author = {Sandra Van Aert and Annick De Backer and De wael, A and Jarmo Fatermans and Friedrich, T and Ivan Lobato and O{\textquoteright}Leary, C M. and Varambhia, A and Thomas Altantzis and Jones, L and Arnold Jan den Dekker and Peter D Nellist and Sara Bals} } @article {1793, title = {An alternative approach for ζ-factor measurement using pure element nanoparticles}, journal = {Ultramicroscopy}, volume = {164}, year = {2016}, pages = {11{\textendash}16}, abstract = {It is very challenging to measure the chemical composition of hetero nanostructures in a reliable and quantitative manner. Here, we propose a novel and straightforward approach that can be used to quantify energy dispersive X-ray spectra acquired in a transmission electron microscope. Our method is based on a combination of electron tomography and the so-called ζ-factor technique. We will demonstrate the reliability of our approach as well as its applicability by investigating Au-Ag and Au-Pt hetero nanostructures. Given its simplicity, we expect that the method could become a new standard in the field of chemical characterization using electron microscopy.}, keywords = {Bimetallic nanoparticles, EDXS quantification, Electron tomography}, issn = {03043991}, doi = {10.1016/j.ultramic.2016.03.002}, url = {http://linkinghub.elsevier.com/retrieve/pii/S0304399116300134}, author = {Daniele Zanaga and Thomas Altantzis and Jonathan Sanctorum and Bert Freitag and Sara Bals} } @article {1674, title = {Quantitative 3D analysis of huge nanoparticle assemblies.}, journal = {Nanoscale}, volume = {8}, year = {2016}, month = {2016 Jan 7}, pages = {292-9}, abstract = {Nanoparticle assemblies can be investigated in 3 dimensions using electron tomography. However, it is not straightforward to obtain quantitative information such as the number of particles or their relative position. This becomes particularly difficult when the number of particles increases. We propose a novel approach in which prior information on the shape of the individual particles is exploited. It improves the quality of the reconstruction of these complex assemblies significantly. Moreover, this quantitative Sparse Sphere Reconstruction approach yields directly the number of particles and their position as an output of the reconstruction technique, enabling a detailed 3D analysis of assemblies with as many as 10,000 particles. The approach can also be used to reconstruct objects based on a very limited number of projections, which opens up possibilities to investigate beam sensitive assemblies where previous reconstructions with the available electron tomography techniques failed.}, issn = {2040-3372}, doi = {10.1039/c5nr06962a}, author = {Daniele Zanaga and Folkert Bleichrodt and Thomas Altantzis and Winckelmans, Naomi and Willem Jan Palenstijn and Jan Sijbers and de Nijs, Bart and Marijn A van Huis and Ana S{\'a}nchez-Iglesias and Luis M Liz-Marzán and van Blaaderen, Alfons and Kees Joost Batenburg and Sara Bals and Van Tendeloo, Gustaaf} } @article {1580, title = {The ASTRA Toolbox: a platform for advanced algorithm development in electron tomography}, journal = {Ultramicroscopy}, volume = {157}, year = {2015}, pages = {35{\textendash}47}, doi = {10.1016/j.ultramic.2015.05.002}, author = {Wim Van Aarle and Willem Jan Palenstijn and Jan De Beenhouwer and Thomas Altantzis and Sara Bals and Kees Joost Batenburg and Jan Sijbers} } @article {1626, title = {Quantitative 3D analysis of huge nanoparticle assemblies}, journal = {Nanoscale}, volume = {8}, year = {2015}, pages = {292-299}, doi = {10.1039/C5NR06962A}, author = {Daniele Zanaga and Folkert Bleichrodt and Thomas Altantzis and Winckelmans, Naomi and Willem Jan Palenstijn and Jan Sijbers and B. van Nijs and Marijn A van Huis and van Blaaderen, Alfons and Ana S{\'a}nchez-Iglesias and Luis M Liz-Marzán and Kees Joost Batenburg and Sara Bals and Van Tendeloo, Gustaaf} }