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PhD position, High Definition Electron Microscopy - 2019BAPFWETEF121Posted by: University of Antwerp
Posted date: 2019-Apr-30
The EMAT research group at the Faculty of Science (University of Antwerp) is seeking to fill two
PhD positions in the area of “High Definition Electron Microscopy: Greater clarity via multidimensionality” under the supervision of Prof. Timothy Pennycook
These vacancies are situated in the H2020 ERC Starting grant High Definition Electron Microscopy: Greater clarity via multidimensionality (HDEM). The overarching goal of the HDEM project is to maximize the amount of information retrieved per unit dose via multidimensional data acquisition and analysis techniques such as 4D STEM and optical sectioning.
Phase contrast imaging in HRTEM is currently the mode of choice for imaging the most beam sensitive specimens due to its high dose efficiency. Advances in camera efficiency and averaging methods such as single particle analysis have led to a so called resolution revolution in structural biology and the awarding of the 2017 Nobel prize in chemistry for cryo-EM. However we have recently shown via image simulations that electron ptychography can significantly outperform the dose efficiency of HRTEM, offering the prospect of extending the capabilities of cryo-EM yet further. To realize the potential of ptychography for low dose imaging experimentally we will utilize the latest in high speed cameras to record the required 4D STEM datasets. We will combine our enhanced imaging capabilities with single particle analysis for imaging biomolecules at ultra low doses. Similar techniques will be used for fragile materials science samples, for instance metal organic framework, Li ion battery, 2D, catalyst and perovskite solar cell materials. In addition to ultralow dose we aim to investigate high precision applications including imaging local electromagnetic fields such as those due to charge transfer, and testing the limits of imaging directly in 3D with optical sectioning in combination with spectroscopic imaging.
Profile and requirements
Additional information about the vacancy can be obtained from: Timothy Pennycook, tel. +32 3 265 36 65, timothy.pennycookuantwerpen.be.
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