Acknowledgements Thank you, to all the people who followed along and supported me through this project! To my supervisor, Mikael, for lots of patience, many valuable lessons, hours of fruitful discussion and even occasional hands-on help in the laboratory. To Jean, for much of the same, and for all of the previous work that he has put into the laboratory without which the experiments that I present here would not have been possible. To Claudio, who answered all my technical problems with five

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... lutions, two additional solution to tangentially related problems, and an impromptu piece on the guitar. To all members of GAP, who make it the unique place that it is! To my family, for being there whenever the sailing wasn't quite as smooth.