Dr Pierre Haas
Career
 2017 : Nevile Research Fellow in Applied Mathematics, Magdalene College, Cambridge
 20162017 : EPSRC Doctoral Prize Fellow, DAMTP, University of Cambridge
 20132016 : PhD Student, DAMTP, University of Cambridge
 20092013 : Mathematical Tripos (BA & MMath), Gonville & Caius College, Cambridge
Research
Pierre is a member of the Biological Physics research group in the Department of Applied Mathematics and Theoretical Physics. His research is on the mathematics of morphogensis: how does shape arise in physical systems, living or otherwise?.
Inversion in Volvox
In particular, Pierre is interested gaining a mechanical understanding of the inversion process in the green alga Volvox, spherical sheets of cells that turn themselves inside out through a small hole at the top.
 S. Höhn, A. R. HonerkampSmith, P. A. Haas, P. Khuc Trong, and R. E. Goldstein, "Dynamics of a Volvox Embryo Turning Itself Inside Out", Physical Review Letters 114, 178101 (2015).
 P. A. Haas and R. E. Goldstein, "Elasticity and Glocality: Initiation of Embryonic Inversion in Volvox", J R Soc Interface 12, 20150671 (2015).
 P. A. Haas, S. S. M. H. Höhn, A. R. HonerkampSmith, J. B. Kirkegaard, and R. E. Goldstein, "The noisy basis of morphogenesis: Mechanisms and Mechanics of Cell Sheet Folding Inferred from Developmental Variability", PLOS Biology 16, e2005536 (2018).
 P. A. Haas and R. E. Goldstein, "Embryonic Inversion in Volvox carteri: The Flipping and Peeling of Elastic Lips", sub judice (2018), arXiv:1808.00828.
The first paper on inversion was the subject of a Physics Viewpoint, "How to Turn an Embryo Inside Out", by Arezki Boudaoud.
Other Research
Shape generating chemical systems are a very literal instantiation of Turing's quest for the chemical basis of morphogenesis. Pierre has been interested in developing a theory describing a recently discovered exemplar of such a system: oil emulsion droplets that flatten into a variety of polygonal shapes upon slow cooling.
 P. A. Haas, R. E. Goldstein, S. K. Smoukov, D. Cholakova, and N. Denkov, "Theory of ShapeShifting Droplets", Physical Review Letters 118, 088001 (2017).
Another research interest centres around probabilistic models for the prediction of RNA secondary structures, in particular extending models based on stochastic contextfree grammars to include kinetic transcription effects.

J. W. J. Anderson, P. A. Haas, L.A. Mathieson, V. Volynkin, R. Lyngsø, P. Tataru, and J. Hein, "Oxfold: kinetic folding of RNA using stochastic contextfree grammars and evolutionary information", Bioinformatics 29, 704 (2013).