Nicholas Johnson (Department of Physics and Astronomy, University of Sussex, Brighton, BN1 9QH, UK), Foni Raphaël Lebrun-Gallagher (Department of Physics and Astronomy, University of Sussex, Brighton, BN1 9QH, UK), Sabastien Weidt (Department of Physics and Astronomy, University of Sussex, Brighton, BN1 9QH, UK), Zak Romaszko (Department of Physics and Astronomy, University of Sussex, Brighton, BN1 9QH, UK), Martin Siegele (Department of Physics and Astronomy, University of Sussex, Brighton, BN1 9QH, UK), Reuben Puddy (Department of Physics and Astronomy, University of Sussex, Brighton, BN1 9QH, UK), Weikang Fan (Department of Physics and Astronomy, University of Sussex, Brighton, BN1 9QH, UK), Kian Shen Kiang (Nanofabrication Centre, School of Electronics and Computer Science, University of Southampton, University Road, Southampton, SO17 1BJ, UK), Harold Chong (Nanofabrication Centre, School of Electronics and Computer Science, University of Southampton, University Road, Southampton, SO17 1BJ, UK), Winfried Hensinger (Department of Physics and Astronomy, University of Sussex, Brighton, BN1 9QH, UK)