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    Far-Infrared Absorption of PbSe Nanorods

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    Type
    Article
    Authors
    Hyun, Byung-Ryool
    Bartnik, A. C.
    Koh, Weon-kyu
    Agladze, N. I.
    Wrubel, J. P.
    Sievers, A. J.
    Murray, Christopher B.
    Wise, Frank W.
    KAUST Grant Number
    KUS-C1-018-02
    Date
    2011-07-13
    Permanent link to this record
    http://hdl.handle.net/10754/598312
    
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    Abstract
    Measurements of the far-infrared absorption spectra of PbSe nanocrystals and nanorods are presented. As the aspect ratio of the nanorods increases, the Fröhlich sphere resonance splits into two peaks. We analyze this splitting with a classical electrostatic model, which is based on the dielectric function of bulk PbSe but without any free-carrier contribution. Good agreement between the measured and calculated spectra indicates that resonances in the local field factors underlie the measured spectra. © 2011 American Chemical Society.
    Citation
    Hyun B-R, Bartnik AC, Koh W, Agladze NI, Wrubel JP, et al. (2011) Far-Infrared Absorption of PbSe Nanorods. Nano Lett 11: 2786–2790. Available: http://dx.doi.org/10.1021/nl201115h.
    Sponsors
    This work was supported by the Cornell Center for Materials Research (CCMR) with funding from the Materials Research Science and Engineering Center program of the National Science Foundation (cooperative agreement DMR 0520404) and in part by Award No. KUS-C1-018-02 made by King Abdullah University of Science and Technology (KAUST). C.B.M. and W.-k.K. acknowledge financial support from the NSF through DMS-0935165. This research was partially supported by the Nano/Bio Interface Center through the National Science Foundation (NSEC DMR08-32802). Authors N.I.A., J.P.W., and A.J.S. were supported by DMR-0906491 and DOE No. DE-FG02-04ER46154.
    Publisher
    American Chemical Society (ACS)
    Journal
    Nano Letters
    DOI
    10.1021/nl201115h
    PubMed ID
    21627094
    ae974a485f413a2113503eed53cd6c53
    10.1021/nl201115h
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