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Browsing Research Articles (Chandrabhas N.) by Subject "Absorption"

Browsing Research Articles (Chandrabhas N.) by Subject "Absorption"

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  • Anharmonicity in light scattering by optical phonons in GaAs1-xBix 
    Joshya, R. S.; Rajaji, V.; Narayana, Chandrabhas; Mascarenhas, A.; Kini, R. N. (American Institute Physics, 2016)
    We present a Raman spectroscopic study of GaAs1-xBix epilayers grown by molecular beam epitaxy. We have investigated the anharmonic effect on the GaAs-like longitudinal optical phonon mode (LOGaAs') of GaAs1-xBix for ...
  • Comparative high pressure Raman studies on perfluorohexane and perfluoroheptane 
    Kavitha, C.; Narayana, Chandrabhas (Pergamon-Elsevier Science Ltd, 2015)
    High pressure Raman spectroscopic studies on perfluorohexane and perfluoroheptane have performed up to 12 GPa. Perfluorohexane under goes two pressure induced transitions: (1) liquid-solid transition at 1.6 GPa and (2) ...
  • Nano-morphology induced additional surface plasmon resonance enhancement of SERS sensitivity in Ag/GaN nanowall network 
    Sharvani, S.; Upadhayaya, Kishor; Kumari, Gayatri; Narayana, Chandrabhas; Shivaprasad, S. M. (IOP Publishing Ltd, 2015)
    The GaN nanowall network, formed by opening the screw dislocations by kinetically controlled MBE growth, possesses a large surface and high conductivity. Sharp apexed nanowalls show higher surface electron concentration ...
  • Nanocrystalline Ag microflowers as a versatile SERS platform 
    Mettela, Gangaiah; Siddhanta, Soumik; Narayana, Chandrabhas; Kulkarni, G. U. (Royal Society of Chemistry, 2014)
    In this paper, the synthesis of Ag microflowers for use as manipulable and reusable substrates in surface enhanced Raman spectroscopy (SERS) is demonstrated, working with ultra-low volumes of the analyte. Flower-like AgBr ...

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