Computational Modeling
We use finite element modeling to understand the properties of near-field light and how the tip of an AFM interacts with different kinds of materials. These studies allow us to control near-field light for specific applications, such as increasing the intensity of light in the tip-sample region or launching surface polaritons.
Nano-Schottky effect
Recently we investigated the effects of an AFM tip on charge redistribution in a semiconductor. We found that because the AFM tip has a high work function, it can cause accumulation or depletion of charge carriers, over distances greater than 100 nm in the semiconductor. This matters a lot in nanostructured materials!
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