Searches for Elementary Particles with Fractional Electric Charge

These high-sensitivity, non-accelerator experiments search for elementary particles with fractional electric charge in bulk matter. These experiments use new technologies involving the production of very small liquid drops and highly automated developments of the traditional Millikan method of measuring elemental electric charge. Future searches will concentrate on material from meteorites and ancient rocks. The search method will also be extended to very massive stable particles with conventional charge. This research is suitable for graduate students who wish to work on their own elementary particle physics experiments and learn a variety of experimental techniques ranging from microfabrication to machine vision.