Fluorescence-detected magnetic field effects on radical pair reactions from femtolitre volumes

This is the authors' abstract. We don't add key points for this paper.

We show that the effects of applied magnetic fields on radical pair reactions can be sensitively measured from sample volumes as low as ∼100 femtolitres using total internal reflection fluorescence microscopy. Development of a fluorescence-based microscope method is likely to be a key step in further miniaturisation that will allow detection of magnetic field effects on single molecules.