Solid State Physics;
Facility for Optical Characterisation and Spectroscopy (FOCAS.dit.ie);
Centre for Industrial and Engineering Optics (IEO.dit.ie)
'The mathematician's patterns, like the painter's or the poets, must be beautiful; the ideas, like the colours or the words, must fit together in a harmonious way. Beauty is the first test: there is no permanent place in the world for ugly mathematics.'