Acknowledgements

We would like to thank:

Ross McPhedran for giving us the honour of writing the preface of this book and also for all the friendly and inspiring conversations on the subject and on many other topics including Shakespeare. This book owes a lot to the Marseille-Sydney collaboration.

Our colleagues and friends from the ARC Center for Ultrahigh Bandwidth Devices for Optical Systems (CUDOS) at the University of Sydney and University of Technology, Sydney, who developed the Multipole Method for MOFs with us. We are particularly indebted to Tom White who was audacious enough to dive into the -in these early days still quite hazardous- task of the very first simulations of MOFs using the Multipole Method; to the wizard of matrices (and more) Lindsay Botten; and to C. Martijn de Sterke -de facto and much appreciated co-supervisor of one of the authors. In this context we would also like to acknowledge the travel support received from the French and Australian governments and from the French embassy in Canberra and the University of Sydney under the PICS, IREX and cotutelle schemes, without which our very fruitful collaboration with our Australian colleagues would have remained wishful thinking.

Daniel Maystre, who got two of us started on the Multipole Method and whose wisdom and knowledge reach unfathomable depths.

Part of the writing of this book was undertaken when one of us was working with Sasha Movchan in the Department of Mathematical Sciences at Liverpool University. The book came to fruition whilst this author was working with John B. Pendry, FRS, in the Physics Department at Imperial College London. Henceforth, we wish to thank them both warmly for their invaluable human and scientific support.

John Pottage who demonstrated that it is possible to read this book within a week.

Niels Asger Mortensen for interesting discussions on modal cutoffs.

C. Geuzaine for his invaluable help as an infallible GetDP guru and, with him, all the present and former colleagues of the Department of Electrical Engineering of the University of Liège led by W. Legros: J.-F. Remacle, F. Henrotte, P. Dular, D. Colignon, H. Hédia, F. Delincé, A. Genon, B. Meys, R. Sabariego, Y. Gyselinck, J.-P. Adriaens, M. Umé, P. Scarpa, the late J.-Y. Hody, T. Ledinh, J. Mauhin, V. Beauvois, L. Brokamp, N. Bamps, M. Paganini, W. Legros, and many others...

A. Bossavit, E. Tonti, and P. Kotiuga for fascinating conversations on numerical electromagnetism and particularly on the applications of differential geometry and algebraic topology.