Jenny Clark, professor in physics at the University of Sheffield, obtained her PhD from the University of Cambridge in 2007 on intermolecular interactions in pi-conjugated molecules. She then worked on ultrafast all-optical switching in polymer optical fibers with Prof. Guglielmo Lanzani in Milan before returning to Cambridge to research singlet fission in carotenoids, polyenes and acenes. After maternity leave in 2012-14, she joined the University of Sheffield in 2015 on an Advanced Vice Chancellor’s Fellowship. Her current research focuses on singlet fission, photosynthesis, polaritonics and the spectroscopy of triplet pair states.