Filters: Format: "application/pdf" School Or College: "College of Science" Collection: "ir_uspace" Subject: "Carbon nanotubes"
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Saam, Brian | Optically polarized 129Xe NMR investigation of carbon nanotubes | We demonstrate the utility of optically polarized 129Xe NMR in a convection cell for measuring the surface properties of materials. In particular, we show adsorption of xenon gas on oxidatively purified single- and multiwalled carbon nanotubes. The interaction between xenon and multiwalled nanotube... | Carbon nanotubes; Multiwalled nanotubes; 129Xe NMR; Gas adsorption | 2008-12 |
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Rogachev, Andrey | Superconducting properties of polycrystalline Nb nanowires templated by carbon nanotubes | Continuous Nb wires, 7-15 nm in diameter, have been fabricated by sputter-coating single fluorinated carbon nanotubes. Transmission electron microscopy revealed that the wires are polycrystalline, having grain sizes of about 5 nm. The critical current of wires thicker than ~12 nm is very high (107 A... | Polycrystalline Nb; Carbon nanotubes; Langer-Ambegaokar-McCumber-Halperin; Phase slips | 2003 |
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Vardeny, Zeev Valentine | Ultrafast spectroscopy of excitons in semiconducting carbon nanotubes | Ultrafast relaxation dynamics of photoexcitations in semiconducting single walled carbon nanotubes (S-NTs) were investigated using polarized pump-probe photomodulation (with 150 fs time resolution) and cw polarized photoluminescence (PL). Both annealed and unannealed NT films and D 2 0 solutions of ... | Non-linear optical methods; Carbon nanotubes; ultrafast dynamics | 2005 |
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Vardeny, Zeev Valentine | Universal properties of quasi-one-dimensional excitons in semiconducting single-walled carbon nanotubes and ∏-conjugated polymers | The nature of the primary photoexcitations in semiconducting single-walled carbon nanotubes (S-SWCNTs) is of strong current interest. We have studied the emission spectra of S-SWCNTs and two different rr-conjugated polymers in solutions and films, and have also performed ultrafast pump-probe spectr... | Carbon nanotubes; pi-conjugated polymers; SWCNT; Photoexcitation; Optoelectronic properties; Quasi-one-dimensional | 2006 |
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