Trinity College Dublin

Skip to main content.

Top Level TCD Links

Edmund Long

Postgraduate Student


Research

The field of two-dimensional nanomaterial research is dominated by graphene. However, recently the scope of this field has been expanding to include an ever-widening range of materials like Transition Metal Dichalcogenides (TMDs), as novel exfoliation methods are being developed.

It is important to understand exactly what you are producing within your dispersion, and to be able to characterise changes resulting from differing methods.

Characterisation is therefore vital. Combining high resolution imaging with analytical tools like EDX and EELS gives great insight into the structure and composition of materials produced through exfoliation. To some extent, this can be combined with in-situ microscope holders to produce conditions similar to those under which such materials might be expected to operate. For example, I have used a liquid-cell holder to study the behaviour of nanoflakes in a range of liquid environments, although most commonly in water. I am currently focussing on the degradation behaviour of some of these TMDs, in particular titanium disulphide, studied both in- and ex-situ. Another route towards understanding materials is to try and predict their properties through the use of computational modelling, and then compare the theory to experimental results to improve the model such that it could be used to model materials which have not yet been studied experimentally. I have recently started working with the fhi-AIMS density functional package, and I hope to incorporate this into my ongoing characterisation work.

University of Oxford

My undergraduate degree was in Materials Science at the University of Oxford, and I graduated in 2012 with an MEng.

Trinity College Dublin

I am currently studying for a PhD within the School of Physics here, at Trinity College Dublin.

Edmund
..developing an understanding of new instruments, .. how the information obtained relates to that resulting from various Transmission Electron Microscope techniques..

Publications

Title:
Scalable Production of Large Quantities of defect-free few-layer graphene by shear exfoliation in liquids
Authors:
K. R. Paton, E. Varrla, C. Backes, R. J. Smith, U. Khan, A. O’Neill, C. Boland, M. Lotya, O. M. Istrate, P. King, T. Higgins, S. Barwich, P. May, P. Puczkarski, I. Ahmed, M. Moebius, H. Pettersson, E. Long, L. Coelho, S. E. O’Brien, E. K. McGuire, B. Mendoza-Sanchez, G. S. Duesberg, N. McEvoy, T. J. Pennycook, C. Downing, A. Crossley, V. Nicolosi, and J. N. Coleman
Source:
Nature Materials, 13: 624 – 630 (2014)

Contact

School of Physics, TCD (AML Main Office)
E-mail: longed@tcd.ie


Last updated 9 May 2018 physics@tcd.ie (Email).