C. S. Sundar

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  • N Chandrabhas, Ajay K Sood, D V S Muthu, C S Sundar, A Bharathi, Y Hariharan +1 other
  • 2008
We have studied single crystals of C 70 by Raman scattering and photolumi-nescence in the pressure range from 0 to 31.1 GPa. The Raman spectrum at 31.1 GPa shows only a broad band similar to that of the amorphous carbon without any trace of the Raman lines of C 70. After releasing the pressure from 31.1 GPa, the Raman and the photoluminescence spectra of(More)
  • A Bharathi, S Jemima Balaselvi, M Premila, T N Sairam, G L N Reddy, C S Sundar +1 other
  • 2002
Following the recent theoretical prediction of superconductivity in hole doped LiBC by Rosner et al [1], we have attempted to synthesise Li deficient Li x BC (x = 1, 0.8, 0.6 and 0.4) and look for superconductivity in this system. Our synthesis procedure, following the recipe for MgB 2 , involves reaction of elemental components in a Ta crucible at 900 o C(More)
We adopt the Ensemble Empirical Mode Decomposition (EEMD) method, with an appropriate thresholding on the Intrinsic Mode Functions (IMFs), to denoise the magnetocardiography (MCG) signal. To this end, we discuss the two associated problems that relate to: (i) the amplitude of noise added to the observed signal in the EEMD method with a view to prevent mode(More)
Cd K-edge extended X-ray absorption fine-structure spectroscopic studies were carried out on Cd(1-x)Ca(x)O (0 ≤ x ≤0.9) solid solutions and the first and second nearest neighbour (NN) distances and their mean square relative displacement σ(2) were estimated. The first NN distance, d(Cd-O)(x), was found to be smaller than its expected value, a(x)/2, obtained(More)
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