What question did this study set out to answer?

Investigate diameter- and polarization-dependent Raman scattering intensities in single tapered silicon nanowires and evaluate their influence on optical temperature measurements.

April 12, 2012Nano Letters

Diameter and Polarization-Dependent Raman Scattering Intensities of Semiconductor Nanowires

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FLFrancisco J. LópezAbbVie (United States)JHJerome K. HyunEwha Womans University UGUri GivanMax Planck Institute of Microstructure Physics

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Implication

Nanophotonic modeling demonstrates diameter- and polarization-dependent Raman scattering in tapered silicon nanowires, highlighting constraints on Raman-based temperature estimations.

Key Points

Investigate diameter- and polarization-dependent Raman scattering intensities in single tapered silicon nanowires and evaluate their influence on optical temperature measurements.
Synthesized single-crystal tapered silicon nanowires via concurrent homoepitaxial radial growth and vapor-liquid-solid axial growth.
Measured polarized Raman scattering along individual wires and simulated response profiles using finite-difference time-domain (FDTD) modeling that incorporates internal electromagnetic mode structures.
Electromagnetic resonances along the nanowire induced pronounced diameter-dependent variations in broad-band light absorption and scattering.
FDTD simulations quantitatively reproduced the experimental Raman scattering intensities across multiple polarization states, demonstrating that standard Stokes to anti-Stokes intensity ratios are distorted by internal cavity modes when estimating lattice temperature.

Cite This Study

López et al. (2012) studied this question.

synapsesocial.com/papers/6aae204765f45154cb879eb4 https://doi.org/10.1021/nl204537d

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Implication

Nanophotonic modeling demonstrates diameter- and polarization-dependent Raman scattering in tapered silicon nanowires, highlighting constraints on Raman-based temperature estimations.

Diameter and Polarization-Dependent Raman Scattering Intensities of Semiconductor Nanowires

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Cite This Study

Diameter and Polarization-Dependent Raman Scattering Intensities of Semiconductor Nanowires

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