Transmission Electron Microscopy University of Limerick

Welcome

The Transmission Electron Microscopy research group at the University of Limerick (TEMUL) is led by Prof Ursel Bangert who is the Bernal Chair in Microscopy and Imaging and senior Professor at the University of Limerick Department of Physics. Prof Bangert is the Co-Principal Investigator on the H2020 EU Project MagnaPharm, the SFI funded US-Ireland project ‘conducting domain walls for novel nano-electronics’, and the Volkswagenstiftung funded project 'New Single Photon Sources by Engineering Monolayer-Thick Semiconductors on the Atomic Scale'. Prof Bangert is the President of the Microscopy Society of Ireland and is heavily involved in the Department of Physics Athena Swan committee. Prof Bangert's career fo over 30 years in the field of electron microscopy research includes academic positions at the Universities of Manchester and Surrey. Prof Bangert was heavily involved in the conception and managerial activities of Electron Microscopy Facilities at Liverpool (NorthWest STEM; Co-I) and at Daresbury (SuperSTEM; Co-I), and overseeing the Manchester University School of Materials Electron Optical facilities. She is currently building up an international centre for ultra-high resolution imaging and characterisation at the University of Limerick. Prof Bangert has obtained funding for a double corrected and monochromated Titan Themis, analytical transmission electron microscope, a full selection of in-situ TEM holders (liquid, electrochem, heating, biasing, and gas) and a fast direct electron detector Gatan K2 camera.

Our Work

2D Materials

2D Materials, sometimes referred to as single layer materials, are crystalline materials consisting of a single (or near single) layer of atoms.

TEM and STEM Imaging - Temul

TEM and STEM imaging

Imaging is carried out in diffraction contrast and phase contrast mode, as well as in scanning TEM (STEM), especially in high annular dark field (HAADF) STEM mode.

Electron Energy Loss Spectroscopy - Temul

Electron Energy Loss Spectroscopy

Electron Energy Loss Spectroscopy is an absorption spectroscopy technique, where the energy, absorbed from the incoming electron beam when passing through the sample, is measured with high energy and spatial resolution.

In-situ TEM/STEM

TEM imaging at 200kV of AlOOH mineral nanoparticles dissolving in a liquid cell by internal delamination.

Modelling - Temul

Modelling

Theoretical modelling and image simulations are essential for evaluation and interpretation of experimental observations.

Plasmonics

Plasmonics

Plasmons are collective excitations in materials exhibiting metallic and semiconducting properties, and, depending on the material, occur over an energy range from tens of eV down to the meV regime.

EDS Mapping - Temul

EDS Mapping

Energy-dispersive X-ray spectroscopy (EDS) is an analytical technique used for the elemental analysis or chemical characterization of a sample.

Nano-Crystallography

Nano-crystallography aims at the investigation of crystals in the overall size range from few hundred nano-meters on downwards .

High Resolution Imaging

In high resolution imaging the atomic lattice of a material can be resolved.

Imaging Tomography - Temul

Imaging Tomography

A tomographic series is and image series of the same feature taken at varying angles. The images can then be used to recreate a 3D model of the object being imaged.