Aerosol is particles in a gas volume. Examples are dust in your room air, cloud droplets, exhaust particles from an engine, sea-salt particles from wave foam as well as produced nanoparticles. We teach and research on the topic of aerosols: how are the particles structured, what is the interaction with the gas-phase, what physicochemical properties do they have, and what effects do they have on nature and our health?
Aerosol particles are everywhere, in size from 1 nanometer up to some tenths of a mm. Aerosol particles are not necessarily spherical, but can have a complex shape, surface structure and morphology (see image below). Filtered air can be completely free from particles, but dusty environments can have hundreds of thousands of particles per cubic centimetre. There is thus a high variability that sets high requirements on the instrumentation used and research questions to study.
Aerosol particles are used within nanotechnology (for instance solar cells), in health care (for instance the Turbuhaler®), but also have adverse health effects during deposition in our lungs and affect climate through the reflection and absorption of solar light and through cloud formation. Finally, they act as surfaces and volumes for atmospheric chemical reactions.
Please see the links below for more information about our research: