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You are here Research > Research Groups > Ultramicroscopy Group > Research

Research Areas

Scan-distortion & Hysteresis Diagnosis and Correction

Modern electron microscopes are able to deliver deep sub-angstrom resolution, however in scanned systems the precision in positioning of the electron probe becomes increasingly important. The group researches methods to observe, diagnose and compensate errors in probe-scanning to deliver images with the highest possible precision.

STEM Imaging using Ultra-sensitive Electron Counting Sensors

Electron counting sensors represent the ultimate in detection efficiciency but come at a high cost (around €250k). This research activity in the group aims ot evaluate methods to reduce the cost of electron counting technology to make such high-performance imaging available to the wider research community.

Transmission Electron Microscope (TEM) Objective-lens Performance Assesment

Objective Lens Simulation

The objective-lens in an electron microscope dictates many of its fundamental operating performances. Using multi-physics modelling software we can simulate the magnetic field and optical focussing proerties of these lenses.

We also investigate the electrical stability and thermal-managment of electron-lenses to improve performance.

This research activity aims to evaluate current performance in these sytems and to lay the groundwork for possible future 3D-printing of microscope components.


Reduced Energy-spread Electron Emitters

The electron emitter is the start of the entire electron imaging process. This activity seeks to understand the opportunities for producing electron emitters with intrinsically lower energy spreads to improve low-voltage imaging without the use of expensive electron monochromator technology.

Evaluation of Addative Manufacturing (3D Printing) for Electron Microscopy

This research theme seeks to identify potential opportunities with, and risks for, using 3D printing in the manufactuer of EM equipment and accessories.