Terahertz dielectric properties of MgO nanocrystals

Jiaguang Han; Boon Kuan Woo; Wei Chen; Mei Sang; Xinchao Lu; Weili Zhang

doi:10.1021/jp805880p

Terahertz dielectric properties of MgO nanocrystals

Jiaguang Han, Boon Kuan Woo, Wei Chen, Mei Sang, Xinchao Lu, Weili Zhang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

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.

Original language	English
Pages (from-to)	17512-17516
Number of pages	5
Journal	Journal of Physical Chemistry C
Volume	112
Issue number	45
DOIs	https://doi.org/10.1021/jp805880p
Publication status	Published - 13 Nov 2008
Externally published	Yes

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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.",

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T1 - Terahertz dielectric properties of MgO nanocrystals

AU - Han, Jiaguang

AU - Woo, Boon Kuan

AU - Chen, Wei

AU - Sang, Mei

AU - Lu, Xinchao

AU - Zhang, Weili

PY - 2008/11/13

Y1 - 2008/11/13

N2 - 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.

AB - 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.

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Terahertz dielectric properties of MgO nanocrystals

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