His interests are in basic phenomena and in applications of superconductivity. Quantum mechanics in macroscopic systems is a topic of current interest and he and his group are studying it in long Josephson junctions by observing the tunneling of fluxons at very low temperatures using a 3He-4He dilution refrigerator. Tunneling is also studied in mesoscopic junctions where under suitable conditions single electron behavior is observed. A simple and reliable miniature refrigerator based on the thermoacoustic effect is being developed for cooling electronic devices. Such a refrigerator works on the principle that a sound field can produce cooling.
Research is in progress on thin films of quasicrystals for fundemental studies and applications.