Preface
This thesis is submitted as partial fulllment for obtaining the degree of Doctor of Philosophy
(PhD) at the Technical University of Denmark (DTU). The PhD project was nanced
by the Danish Council for Independent Research, Technology and Production Sciences,
Grant No. 11-107021. The project was carried out at the Department of Physics, DTU
Physics, as a member of the Theoretical Microuidics Group (TMF) during a three-year
and ve month period from April 2012 to September 2015. The project was supervised
by Professor Henrik Bruus, leader of the TMF group at DTU Physics. During all three
project years I have made short visits to the lab of Professor Thomas Laurell at Lund
University, Sweden, where the experiments for two of the papers in this thesis have been
performed.
I would like to thank the following people:
My supervisor Henrik Bruus, for teaching me some humility during our rst supervisor
meetings, which any straight-A student needs once in a while, for giving me the opportunity
to experience the joys of being a PhD-student, and for teaching me what good and thorough
physics is.
The people at Bläcklabbet, especially Thomas, Per, Maria, and Pelle, for good discussions
and Swedish food. The researchers in the acoustouidic community for great
conference memories, discussions and motivation to provide theoretical insight. Current
and former members of the TMF group: Christoer, Jonas, Mikkel, Rayisa, Fabio, Søren,
Mathias and Rune, for good discussions and moose adventures. My collaborators Alvaro,
Massimiliano, Per and Rune, for giving me the opportunity to join their great physics
quest to make a quantitative theoretical-experimental comparison of the acoustic streaming
ow. Comsol Mads for insightful discussions during and after our collaboration, and a
vital source of information to what goes on inside the stomach of Comsol.
My friend and collaborator Per Augustsson for teaching me the best of Swedish irony,
for never using smileys, and for giving me constructive feedback on the thesis. My friend
and former colleague Rune Barnkob, for welcoming me into the TMF group and the world
of acoustoudics, for inuencing me with his fascination of physics, for always being a
positive soul and a bundle of joy, and for great hugs.
My friends in Homogrotten for boardgaming and challenging my memory of the fundamentals
of physics through experiments with liquid substances. My family for support
and hygge. My children Aske and Ronja for being the best distraction from the world of
theoretical physics. My lovely wife Line for reminding me that any inconsistency is probvii