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Research interests

My group's research focuses on the quantum behaviour of electrons in materials, principally semiconductors, and we use a variety of optical spectroscopic techniques to probe this behaviour. In our laboratories at Bath, we use Raman microscopy, magneto-Raman scattering, and photoluminescence in order to investigate quantum-confined electronic states in semiconductor heterostructures, nanoparticles, and two-dimensional layered materials. In particular, we have recently pioneered the study of the highly unusual rhenium-based 2D semiconductors. Samples are supplied for all our studies by academic and industrial groups world-wide and the phenomena investigated include the introduction of magnetic phenomena into semiconductors, the growth and doping of epilayers and the behaviour of carriers confined in low-dimensional structures and quantum dot systems. We also use angle-resolved photoemission (nano-ARPES) to probe the electronic states of nanoscale materials; these experiments are based at synchrotrons (SOLEIL in Paris and DIAMOND in the UK). All of this work is supported by state-of-the-art computational modelling based on density functional theory and carried out on the Bath supercomputer in collaboration with theorists at Bath and elsewhere. 

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Projects 2006 2020

graphene
microscopy
scanning
sensors
imaging techniques
magnetic properties
transition metals
proposals
ferrimagnets
requirements
transition metals
travel
synchrotrons
x rays
baths
assemblies
nanocrystals
silicon
molecules
energy transfer

Research Output 2000 2018

Electronic band structure of rhenium dichalcogenides

Gunasekera, S. M., Wolverson, D., Hart, L. S. & Mucha-Kruczynski, M., 6 Jun 2018, In : Journal of Electronic Materials. 47, p. 4314-4320 13 p.

Research output: Contribution to journalArticle

Open Access
File
Rhenium
rhenium
Band structure
Brillouin zones
electronics

Fouling resistant 2D boron nitride nanosheet – PES nanofiltration membranes

Low, Z. X., Ji, J., Blumenstock, D., Chew, Y. M., Wolverson, D. & Mattia, D., 1 Oct 2018, In : Journal of Membrane Science. 563, p. 949-956 8 p.

Research output: Contribution to journalArticle

Nanofiltration membranes
fouling
Boron nitride
Nanosheets
boron nitrides
2 Citations

Investigating nanostructures in carbon fibres using Raman spectroscopy

Okuda, H., Young, R., Wolverson, D., Tanaka, F., Yamamoto, G. & Okabe, T., 1 Apr 2018, In : Carbon. 130, p. 178-184

Research output: Contribution to journalArticle

Open Access
File
Raman spectroscopy
Nanostructures
Carbon clusters
Carbon
Analytical models

Novel Transition Metal Dichalcogenide Semiconductors and Heterostructures

Hart, L., May 2018, 206 p.

Research output: ThesisDoctoral Thesis

rhenium
transition metals
anisotropy
electronics
Raman spectroscopy
6 Citations
Open Access
Photoelectron Spectroscopy
Metals
Rhenium
Anisotropy
Orbit