Our research interests lie in exploring the local electronic, magnetic, and mechanical properties of atomic and molecular structures at surfaces. We are interested in studying how local interactions between atomic-scale structures affect their microscopic behavior, and how quantum mechanical effects might influence nanodevice behavior in very small structures. Our main experimental tool is scanning tunneling microscopy (STM), which we use in combination with other experimental tools to both fabricate atomic-scale structures and probe them spectroscopically.
| || || New classes of carbon nanostructures such as monolayer graphene, graphene nanoribbons, fullerenes, and nanotubes are extremely flexible and hold great promise for new generations of nanodevices. We are currently using scanned probe techniques to explore and modify the properties of these materials at the atomic scale, as well as investigate their device potential. Read more...
| || || Though historically difficult to control at a truly molecular level, NEMS (nano-electro-mechanical systems) have exciting potential technological applications. With STM, we build and explore the physics of new systems whose electro-mechanical state can be remotely switched. Our goal is to assemble these into funtional molecular machines. Read more...
| || || When magnetic structures are shrunk down to single-atom or single-molecule sizes, quantum spin effects dominate their behavior. Interest in this area derives from its great promise for revolutionary applications in spintronics and quantum information. Our group is using scanned probe techniques to explore individual magnetic atoms, spin clusters, and magnetic molecules.
| || || As an alternative to semiconductor solar cells, it is possible to engineer nanoscale elements in large quantities to form composite photovotaics with spatially distributed p-n interfaces. Our group is exploring nanophotovoltaic interfaces with the goal of understanding and optimizing the processes of converting sunlight into usable electrical energy in molecular-scale structures.
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