Department of Physics and Astronomy

Molecules and liquids

Atoms are the building blocks of our everyday world. They combine to form a multitude of systems, such as small molecules, large biomolecules, clusters and liquids. The macroscopic properties of these atomic-based systems result from the microscopic electron structure and dynamics, which we investigate using state-of-the art light sources such as X-ray free electron lasers, 4th generation synchrotrons, and High Harmonic Generation sources). We are both using and developing these techniques in order to understand and control the atomic structure and dynamics of electrons that determines their macroscopic properties.

List of people

Molecules – From atoms and molecules to clusters and biomolecules

  • Molecular Dynamics & Structure
    Aiming towards diffraction before destruction, we study radiation damage and non-thermal heating induced by X-ray free electron lasers in biological samples.

  • Clusters
    We study the general development of the electronic and geometric structure from the isolated atom to the infinite solid.

Liquids – from basics to environmental molecular science

  • Charge delocalisation dynamics
    We study processes such a intermolecular Coloumbic decay between solutes and water on timescales ranging from less than one to hundreds of femtoseconds.

  • Environmental molecular science
    We study the chemical physics of aqueous systems, studying carefully designed model systems to understand natural and anthropogenic processes in the biosphere, especially in connection to atmospheric aerosols.


Olle Björneholmprofessor
Carl Calemanresearcher
Victor EkholmPhD student
Olof JönssonPhD student
Melanie Muckeresearcher
Maria Novella Piancastelliprofessor
Davide Ragazzonpost doc.
Jan-Erik Rubenssonprofessor
Clara SaakPhD student
Matthew Salterresearcher
Anders Sandellprofessor
Hans Siegbahnsenior professor
Robert Stefanuikresearcher
Johan Söderströmassistant professor
Nicusor Timneanuresearcher
Isaak Ungerpost doc.
Josephina Werner, researcher
Christofer ÖstlinPhD student