Scientists recently discovered that nanoscopic peapods — the latest class of nanomaterials created by filling the cores of single‑wall nanotubes — have tunable electronic properties. Our measurements show that encapsulation of molecules can dramatically modify the electronic properties of single-wall nanotubes. We also show that an ordered array of encapsulated molecules can be used to engineer electron motion inside nanotubes in a predictable way. By mapping electron waves of different energies inside these nanoscale structures, we can begin to unravel the complex interaction in these systems, and better understand their electronic properties.
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Mapping the One-Dimensional Electronic States of Nanotube Peapod Structures, D. J. Hornbaker, S-J Kahng, S. Misra, B. W. Smith, A. T. Johnson, E. J. Mele, D. E. Luzzi, and A. Yazdani, Science (Cover Story) 295, 828-831 (2002). (Article)