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Project

Compressed Shape Sensing meets Dynamic Electron Tomography (4D-ATOM).

The 4D characterisation of nanoparticles, i.e., the time evolution of their 3D structures, is essential to understand their transient behaviour under external stimuli such as temperature and pressure. A recent revolution in transmission electron microscopy has made it possible to perform in-situ tomography experiments; hence 4D imaging is within reach. However, novel computational tools are urgently required since the conventional imaging methods fail to produce stable 4D images. 4D-ATOM will develop algorithms and computational techniques to enable 4D imaging of nanoparticles using compressed shape sensing. In particular, 4D-ATOM will construct a numerical scheme based on a dynamic level-set method to track the changes in nanoparticles during their heating or chemical transformations. Moreover, 4D-ATOM will design compressive measurement patterns to facilitate ultra-fast in-situ electron tomography for imaging beam-sensitive nanoparticles. The results of 4D-ATOM will be state-of-the-art in nanotechnology and open up an entirely new set of exciting experiments in the field of electron tomography. These tools will enable researchers to understand and overcome degradation mechanisms for sensitive structures such as metal halide perovskite materials, with applications for solar cells or X-ray detectors. Moreover, understanding the dynamic evolution of the nanoparticles' structure during catalysis will enable one to boost the efficiency and stability of the catalytic process.
Date:1 May 2021 →  30 Apr 2022
Keywords:NANOSCIENCE
Disciplines:Nanophysics and nanosystems