Articles written in Pramana – Journal of Physics
Volume 52 Issue 1 January 1999 pp 67-74
Orientational distribution function in nematic liquid crystals by x-rays: Fourier method
R Somashekar H Somashekarappa A P Divya D Revannasiddaiah M S Madhava
The existing methods for the determination of the orientational distribution function
Volume 69 Issue 3 September 2007 pp 435-443 Research Articles
Variation of long periodicity in blends of styrene butadiene, styrene copolymer/polyaniline using small angle X-ray scattering data
B G Soares Fernando G Souza Jr A Manjunath H Somashekarappa R Somashekar Siddaramaiah
Small angle X-ray scattering data have been recorded for the blends of styrene butadiene, styrene copolymer/polyaniline using the beamline of the LNLS (Laboratorio Nacional de Luz sincroton-Campinas, Brazil). Employing one-dimensional Hosemann's paracrystalline model, we have simulated the meridional reﬂections of these blends in order to compute the long periodicity and hence to ﬁnd the variation with concentrations of the blends. Within the region of available experimental data we observe that there is a linear relationship between long periodicity and concentration of blends. These parameters are compared with physical measurements like tensile strength to ﬁnd the structure–property relation in these blends.
Volume 73 Issue 5 November 2009 pp 927-938
Stacking faults and microstructural parameters in non-mulberry silk fibres
S Divakara S Madhu R Somashekar
We have analysed the broadening of X-ray reflections observed in non-mulberry silk fibres in terms of stacking faults and microstructural parameters using a single-order method and have, with these parameters, developed, for the first time, a procedure to compute the whole pattern of these silk fibres. The essential deviations in the values of microstructural parameters obtained from line profile and whole pattern fitting procedures are discussed in this paper.
Volume 97, 2023
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