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|Title:||Terahertz dielectric properties of MgO nanocrystals||Authors:||Han, J.
|Issue Date:||13-Nov-2008||Citation:||Han, J., Woo, B.K., Chen, W., Sang, M., Lu, X., Zhang, W. (2008-11-13). Terahertz dielectric properties of MgO nanocrystals. Journal of Physical Chemistry C 112 (45) : 17512-17516. ScholarBank@NUS Repository. https://doi.org/10.1021/jp805880p||Abstract:||Terahertz properties of chemically synthesized MgO nanocrystals are studied by terahertz time-domain spectroscopy in the frequency range extending up to 3.7 THz. The experimentally determined optical and dielectric properties of the nanocrystalline MgO are compared with those of a bulk MgO single crystal. Three prominent resonance modes, which are essentially responsible for the dielectric properties of the nanostructured MgO in the terahertz regime, are characterized at ω1l(2π) = 4.26 THz, ω2l(2π) = 7.68 THz, and ω2l(2π) = 12.18 THz and are well-described by a multiple-oscillator model through theoretical fitting. The MgO nanocrystals may find intriguing applications in developing terahertz quasi-optic components and terahertz spectroscopy. © 2008 American Chemical Society.||Source Title:||Journal of Physical Chemistry C||URI:||http://scholarbank.nus.edu.sg/handle/10635/98235||ISSN:||19327447||DOI:||10.1021/jp805880p|
|Appears in Collections:||Staff Publications|
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