Dr R Somashekar

Dr R Somashekar
Designation  Professor & Chairman
Email Id  rs@physics.uni-mysore.ac.in
Phone No  +91-821-2419608
Web  http://faculty.physics.uni-mysore.ac.in/rs
Qualification  M.Sc., Ph.D.,
Area of Specialization  Physics, Condensed matter physics,


Awards /recognitions:     (a) Young Scientist Award 1986;(b) Research associate, UMIST, UK, 1987-89;(c) Visiting professor, JSPS, Tokyo, Japan 2000-2001

Number of projects completed

sl. no

Title of the project

Funding agency

Amount

Year from -to

1

Basic research in liquid crystals

CSIR

Rs 5lakhs

1997-2000

 

2.

SAXS studies of silk fibers

CSIR

Rs 7 Lakhs

1999-2003

3.

SAXS studies of natural fibers

UGC

Rs 5 lakhs

2002-2005

On-going

Sl No

Title of the project

Funding Agency

Amount

Date of commencement

Expected date of completion

1.

Physical and mechanical properties of electron irradiated natural silk fibers

UGC

Rs 6 Lakhs

1-4-2008

1-4-2011

  • Number of Ph. D candidates successfully completed:   Seven (7)
  • Numbe rof Ph. D candidates currently working:    Four(4)

Pulbications

Articles in Journals

1.Micro-structural parameters of polymer materials using WAXS data: Bimodal crystal size distribution; O M Samir, A Manjunath, P Parameswara, H Somashekarappa and R Somashekar J.Polym. Mater,25(4), 529-540(2008).
1.Microstructural parameters of hydroxypropyl-methylcellulose films using X-ray data; P.Parameswara, T.Demappa, T.N.Guru Row and R.Somashekar, Iranian Polymer Journal,17(11), 821-829 (2008).
2.The Effect of cooking on the nano-sized crystalline in Finger Millet and Barley using WAXS data; V. K. Smitha, O. M. Samir ,R. Gopalkrishne Urs,S. S. Mahesh,N. G. Malleshi and R. Somashekar International Journal of Food Properties, 11(4) 781-790 (2008)
3.X-ray investigations of a nematic compound with smectic B phase; S Mohyeddine, R Somashekar and D Revannasiddaiah, Materials Science-An Indian Journal,4(4), 268-273 (2008)
4.Physical and thermal properties of 8MeV electron beam irradiated HPMC polymer films; Sangappa, Demappa T,m Mahadevaiah, Ganesha S., Divakara S., Manjunath Pattabhi and R Somashekar, Nuclear Instruments and Methods,266, 3975-3980 (2008).
5.Morphological parameters in supramolecular structure of new IPP/PLA fibers using SAXS: R Somashekar, V. Annadurai, G Venkatesh, P Parameshara and S. Divakara, Materials Science-An Indian Journal 4(4), 281-283 (2008)
6.Microstructural parameters in electron irradiated hydoxypropyl methyl cellulose films using X-ray line profile analysis: Sangappa, T Demappa, Mahadevaiah, S Ganesh, S Divakara and R Somashekar,J.Appl.Poly.Sci.,109(6), 3983-3990 (2008)
7.Polyaniline-multiwalled Carbon nanotube composites: Characterisation by WAXS and TGA: T Jeevananda, Siddaramaiah, Taek Su Lee, Joong Hee Lee, O M Samir and R Somashekar, J.Appl.Poly.Sci.,109(1),200-210(2008)
8.Nanocrystallite regions of guar gum filled PU/PAN composites before and after biodegradation using WAXS: H Kumar, Siddaramaiah, R Somashekar, S S Mahesh and A Manjunath,J.Appl.Poly.Sci.,,108(5),2762-2771,(2008)
9.Blends of styrene-butadiene-styrene tri-block copolymer/polyaniline-characteriation by SAXS;Fernando G.Souza Jr., B G Soares, Siddaramaiah, A Manjunath and R Somashekar,Materials Science and Engieering A,476(1-20)240-247 (2008)
10.Role of serine in the structural modifications from silk I to silk II: R Somashekar and S S Mahesh,Materials Science-An Indian Journal 3(2), 79-81 (2007).
11.Crystalline size and shape in electron irradiated poly(vinylidene fluoride trifluoroethylene) copolymers using WAXS;Sangappa, A Manjunath,S S Mahesh and RSomashekar,Bull.Phy.Sci., III(1), 23-31(2007).
12.Line Profile Analysis and Crystal Structure of fibers (Invited Article),R Somashekar J.Indian Institute of Science,87(2),213-220(2007)
13.Crystal structure and elastic constants of Dharwar cotton fibre using WAXS data,O M Samir and R SomashekarBulletin of Materials Science., 30(5), 503-510(2007).
14.Variation of long periodicity in blends of stryrene butadiene,styrene copolymer/polyaniline using small angle X-ray scattering data,Fernando G.Souza Jr., B G Soares, Siddaramaiah, A Manjunath, H Somashekarappa and R Somashekar, Pramana-J.Phys., 69(23), 435-443 (2007)
15.Microrheological studies of regenerated silk fibroin solution by video microscopy; A Raghu, R Somashekar and Sharath Ananthamurthy, Journal of Polymer Science Part B: Polymer Physics,45(18),2555-2562 (2007).
16.Crystal and molecular structures of raw bivoltine silk fibre-A comparative study; S S Mahesh and R Somashekar,Indian Journal of Fiber and textile research,32(2), 143-149 (2007).
17.Intrinsic strain effect on crystal and molecular structure of (dch32) cotton fiber; O M Samir and R Somashekar,Powder Diffraction,22(1), 20-26 (2007).
18.Physico-mechanical and WAXS studies of PU/PS semi interpenetration polymer networks; H.Kumar, Siddaramaiah, R Somashekar and S S Mahesh, European Polymer Journal, 43(2), 611-619 (2007)
19.Microcrystalline parameters of polyurethane/polymethyl methacrylate semi interpenetrating polymer networks by WAXS;H. Kumara, Siddaramaiah, R. Somashekar and S.S. Mahesh,Materials Science and Engineering:A, 447(1-2),58-64 (2007).
20.Synthesis and characterization of polyurethane/poly(vinylidene chloride) interpenetrating polymer networks; Muneera Begum, Siddaramaiah, R Somashekar and H Somashekarappa; J.Appl.poly.Sci., 103(3), 1375-1381 (2007)
21.Nature of crystallinity in native and acid modified starches; V Singh, S Z Ali, R Somashekar and P S Mukherjee, International Journal of Food Properties,, 9, 845-854 (2006)
22.Crystallite size and shape in Twaron fibers heat treated at different temperatures using WAXS; Anjana Jain, S Abhishek, Sangappa, SS Mahesh and R Somashekr, J. Appl.Polym.Sci.,100(6) 4910-4916(2006)
23.Variation of crystallite size of Al(1-x)In(x)N for different values of x and band gap; V Naik, R Naik, H Somashekarappa, S S Mahesh and R Somashekar , Bulletin of Materials Science, 29(1)29(2006)
24.Blends of styrene butadiene styrene TRI block copolymer/polyaniline-Characterization by WAXS;F.G. Souza, Jr, B.G. Soares, G.L. Mantovani, A. Manjunath, H. Somashekarappa, R. Somashekar and Siddaramaiah, Polymer 47(6),2163-2171 (2006).
25.Physicomechanical, optical, barrier, and wide angle X-ray scattering studies of filled low density polyethylene films;Siddaramaiah, K. H. Guruprasad, R. T. Nagaralli, H. Somashekarappa, T. N. Guru Row, R. Somashekar , J.Appl.Polym. Sci.,100(4) 2781-2789 (2006)
26.Structure-property relationship of polyethylene glycol-based PU/PAN semi-interpenetrating polymer networks (p 177-187);H. Kumar, Siddaramaiah, R. Somashekar, S. S. Mahesh, S. Abhishek, T. N. Guru Row, Geetha S. Kini Journal of Applied Polymer Science,99(1),177-187 (5 January 2006)
27.Orientational order and distribution function in nematic 1-(4-trans hexylcyclohexyl)-4-[(2-4-isothiocyanato phenyl) ethyl] benzene; D Gopalkrishna, R Somashekar and D Revannasiddaiah; Phase Transitions, 78(6), June , 515-520(2005)
28.Static dielectric studies of two nematogenic compounds; D Gopalakrishna, R Somashekar, D Revannasiddaiah, Mol.Cryst.Liq.Cryst., 436,107-116 (2005).
29.Microscopic order parameter of two nematogenic compounds using X-rays; D Gopalakrishna, D Revannasiddaiah and R Somashekar, Mol.Cryst. Liq.Cryst., 437, 121-131 (2005).
30.Role of micro-crystalline parameters in the physical properties of cotton fibers; S Abhishek, O M Samir, V Annadurai, R Gopalakrishne Urs, S S Mahesh and R Somashekar, European Polymer Journal, 41(12),2916-2922 (2005)
31.Analysis of diffraction line profile from silk fibers using various distribution functions; Sangappa, S S Mahesh, G Subramanya and R Somashekar, J.Polym.Research., 12, 465-472 (2005).
32.Crystal structure of raw pure mysore silk fibre based on (Ala-Gly)2-Ser-Gly peptide sequence using LALS method; Sangappa, S S Mahesh and R Somashekar, J.Bioscience., 30(2), 259-268 (2005)
33.Variation of crystallite shape ellipsoid in non-mulberry silk fibers; H Somashekarappa, S S Mahesh, Sangappa and R Somashekar, Indian J. Fibre and Textile Research,30(3),309-314(2005).
34.Rate of recovery of long periodicity in stretched muscle specimen using SAXS data; V Annadurai, Sangappa and R Somashekar, J.Polymer Materials'21(4),439-444,(2004)
35.Refractive indices, Lorentz field factors, order parameters in pure and binary nematic mixtures; D Sunanda, M S Madhava, D Revannasiddaiah, R Somashekar and J Mahadev, Mol.Cryst.Liq.Cryst., 409, 163-174(2004)
36.Studies on Physico-mechanical and optical properties, and WAXS of Castor oil based polyurethane/polyacrylates interpenetrating polymer networks; Siddaramaiah, P Mallu, S Roopa, H Somashekarappa, R Somashekar, J.Appl.Poly.Sci.,85(3),764-773(2005).
37.A set-up for probing collisions of highly-charged ions with liquid droplets; G K Padmashree, R Somashekar, A Roy, D Kanjilal, G Rodrigues, R Ahuja and C P Safvan, Rev. Sci. Inst., 755094 (2004).
38.Structure-Property relationship of Castor Oil-based PU-PBMA Interpenetrating Polymer Networks; M Begum, Siddaramaiah, R Somashekar and H Somashekarappa, Journal of Elastomers and Plastics,36,197, 2004..
39.Structure-property relation in polyvinyl alcohol /starch composites; Siddaramaiah, Baldev Raj and R Somashekar J.Appl.Polym.Sci.,91(1), 630-635 (2004).
40.Highly-charged ion interaction with liquid droplets; G K Padmashree, A Roy, R Ahuja, R Somashekar and C P Safvan, Physics Teacher,46(3), 74-77(2004)
41.Physico-mechanical, Optical, Barrier, and WAXS studies of Filled Linear Low-Density Polyethylene Films; Siddramaiah, T Jeevananda, K S Jagadeesh, H Somashekarappa and R Somashekar, J Appl. Polm. Sci.,,90(11),2938-2944 (2003).
42.Structure-property relationship in Polyaniline-filled Castor Oil Based Chain Extended Polyurethanes; B K Kendaganna swamy, Siddaramaiah, H Somashekarappa,and R Somashekar, Polymer Engineering and Science,44(4)772-778, 2004.
43.Strain-tensor components, crystallite shape and their effects on crystalline structure in silk I; Sangappa, Kenji Okuyama and R Somashekar, J.Appl.Polym.Sci.,,91(5),3045-3053,(2004).
44.Stucture-property relationship of castor oil based diol chain extended polyurethanes (PUs); B K Kendaganna swamy, Siddaramaiah and R Somashekar, Journal of Materials Science, 38, 451-460(2003).
45.Studies on drying of multi-bivoltine cocoons (IV)influence of stifling of cocoons on structural characteristics of Indian multibivoltine raw silk; G Hariraj, T H Somashekar, V Annadurai, Sangappa, and R Somashekar;J.Silk.Sci. Tech. Jpn.,, 11, 13-19 (2002).
46.Structure-property relation in varieties of acid dye processed silk fibers, H Somashekarappa, V Annadurai, Sangappa, G Subramanya and R Somashekar, Materials Letters, 53(6),415,(2002).
47.Small angle X-ray Scattering studies of silk fibers,J David Londono, V Annadurai, R Gopalkrishne Urs and R Somashekar, J.Polym.Mat., 19, 7-12 (2002).
48.Morphological parameters in varieties of silk fibers using SAXS, J David Londono, V Annadurai, R Gopalkrishne Urs and R Somashekar, J. Appl.Polym.Sci., 85(11), 2382-2388(2002).
49.Electrical, Physico-mechanical and X-ray studies on Ethylene-Vinyl Acetate Copolymer/Polyaniline Blends, T Jeevananda, Siddaramaiah, H Somashekarappa and R Somashekar, J.Appl.Polym.Sci., 83,1730-1735 (2002).
50.Crystal and molecular structure of silk I: Kenji Okuyama, R Somashekar, Keiichi Noguchi and Syuji Ichimura, Biopolymers, 59,310-319 (2001).
51.Variation of the entropy of the transition in nematic mixtures : Nagappa, K N Jagadish, J Mahadeva, S K Naveen and R Somashekar, Mol. Cryst. Liq. Cryst., 366, 239-246 (2001).
52.Structure-property relation in LDPE- starch immiscible blends: Baldevraj, V Annadurai, Madanraj, Siddaramaiah and R Somashekar, Eur. Poly. J, 37, 943 (2001).
53.Physico-chemical properties of PS polymers prepared by inclusion polymerization: P Ravi, S Divakar, Siddaramaiah and R Somashekar, J. Poly. Matls., 19, 127-134 (2001).
54.Studies on SLS-doped PAn and its blends with polycarbonate: T Jeevananda, Siddaramaiah, V Annadurai and R Somashekar, J. Appl. Polym. Sci., 82,383-388(2001).
55.Structure-property relation in varieties of silk fibres: V Annadurai, G Subramanya, R Gopalkrishne Urs and R Somashekar, J. Appl. Poly. Sci.,, 79, 1979 (2001).
56.X-ray structure refinements and strain analysis of substituted cubic lead pyrochlores Pb (M Pb )O ( ; M = Nb or Ta): G Nalini, R Somashekar and T N Guru Row, J. Solid State Chemi., 156, 207 (2001)
57.Phase stabilization in cinnarizine complexes using X-ray profile analysis, G Nagendrappa, S Subramanya Raj Urs, M S Madhava and R Somashekar, PRAMANA- J. Phys., 56, 797 (2001)
58.Physico-mechanical, optical and WAXS studies of chain extended PU films: B K Kendagannaswamy, Siddaramaiah, V Annadurai and R Somashekar J. Macromolecular Sci., Part A Poly. Chem., A37, 213 (2000).
59.X-ray induced disorder in Oligonuclide single crystal: G Savitha, R Somashekar and M A Viswamitra, Eur. Phys. J - Appl. Phys., 12, 99 (2000).
60.WAXS studies of thermally treated polypropylene films and its laminates: Siddaramaiah, A Ramakrishna, Nagappa and R Somashekar, J. Poly. Matls., 17, 63 (2000).
61.Variation of the entropy of the transition in nematic mixtures: Nagappa, J Mahadeva, H Somashekarappa and R Somashekar, Ind. J. Phys., 74A(1), 45 (2000).
62.Small angle X-rays scattering in Nylon 6 using exponential distribution of phase lengths: V Annadurai, R Gopalkrishne Urs, Siddaramaiah and R Somashekar, Polymer, 41, 5689 (2000).
63.Small angle X-ray scattreing patterns in silk fibres: J David Londono, V Annadurai, R Goplkrishne Urs and R Somashekar, Current Science, 79, 563 (2000).
64.Variation of phase lengths in wet and dry Nylon 6 using SAXS data: V Annadurai, R Gopalkrishne Urs and R Somashekar, J. Appl. Cryst., 33, 657 (2000).
65.Refractive index, density and distribution functions in nematic mixtures: A P Divya, D Revannasiddaiah, M S Madhava and R Somashekar, Mol. Cryst. Liq. Cryst., 365, 389-396 (2001).
66.Orientational order parameter in 1-Hexyl 1-4-(4'-isothiocynatophenyl) bicyclo [2.2.2] octance using X-rays: A P Divya, D Revannasiddaiah, M S Madhava and R Somashekar, Mol. Cryst. Liq. Cryst., 365 889-896 (2001).
67.Microcrystalline parameters in native and acid modified starches: H Somashekarappa, R Somashekar, Vasudeva singh and S Z Ali, Bull.Mat.Sci., 22(4), 805-810 (1999).
68.Orientational distribution function in nematic liquid crystals by X - rays : Fourier method; R Somashekar, H Somashekarappa, A P Divya , D Revannasiddaiah and M S Madhava Pramana-J. Phys., 52, 67-74 (1999).
69.Influence of inherent strain on the Curie temperature of rare earths ion-doped bismuth vanadate: K Sooryanarayana, T N Guru Row, R Somashekar and K B R Verma, Bull.Mater.Sci., 21(6), 499-502 (1999).
70.Microscopic order-parameter of two nematogenic compounds using X-rays: A P Divya, D Revannasiddaiah, R Somashekar and M S Madhava, Bull.Mat.Sci., 22(2), 129-132(1999).
71.WAXS studies on silk fibres treated with acid (blue) and metal complex (brown) dyes : H Somashekarappa, G S Nadiger, T H Somashekar, J Prabhu and R Somashekar Polymer, 39, 209 (1998).
72.DSC and WAXS studies of bread stalling, J H Jagannath, K S Jayaraman, S S Arya and R Somashekar, J.Appl. Polym. Sci., 67, 1597 (1998).
73.Characterisation of caster oil-based interpenetrating polymer networks of PU/PS: Siddaramaiah, P Mallu and R Somashekar, J.Appl.Poly.Sci., 68, 1739-43 (1998).
74.Mechanistics of stabilization via doping in Bismuth sesquioxide: A combined approach of Reitveld and microstructural analysis, K Sooryanarayana, R Somashekar and T N Guru Row, Solid State Ionics, 104, 319-324 (1997).
75.X-ray diffraction line-broadening analysis: paracrystalline model ; R Somashekar and H Somashekarappa, J.Appl.Cryst., 30, 147 (1997).
76.Effect of acid dye processing on microstructural parameters in silk fibres : R Somashekar, H Somashekarappa, G Subramanyam and U D Prahllad, European Polymer Journal., 33 (6), 963-967 (1997).
77.Order parameter and distribution functions for nematogenic OBA and NBA, A P Divya, K Narayanamurthy, M S Madhava , D Revannasiddaiah, and R Somashekar,Mol.Cryst.Liq.Cryst.,304, 9-13 (1997).
78.Dielectric relaxation and nematic potential of some nematogenic compounds, S R Kumarswamy, R Somashekar, M S Madhava and D Revannasiddaiah, Mol.Cryst.Liq.Cryst., 304, 1-7 (1997).
79.X-ray Debye temperatures in a series of organic haloamines: H S Yathirajan, K N Mohana , M S Madhava and R Somashekar; Asian Journal of Chemistry, 9(3), 469-473 (1997)
80.Debye-Waller factors in some metal-organic complexes: Nagendrappa, Ramappa, M S Madhava and R Somashekar, Indian J.Phys., 70A(5), 637-640 (1996).
81.Mesomorphic behaviour of stearic acid and DMS: K Narayanamurthy, D Revannasiddaiah, M S Madhava and R Somashekar, Indian Journal of Physics, 70A(2), 249-253 (1996).
82.Effect of physical and chemical modifications on microcrystalline parameters of silk fibres: H Somashekarappa, N Selvakumar, V Subramanyam and R Somashekar, J.Appl. Poly. Sci., 59, 1673-1683 (1996).
83.Microcrystalline parameters in annealed Bivoltine silk fibres using WAXS: R Somashekar and R Gopalkrishne Urs, Polymer , 36(10), 2007-2012 (1995).
84.Micellar nematic lyophase in the mixtures of sodium oleate and glacial acetic acid: Nagappa, Hanumanthanayak, R Jagadish, K N Sivaprasad, R Somashekar and Lokanath Rai K M, Mol.Cryst.Liq.Cryst., 260, 631 (1995).
85.Static dielectric studies of some nematogenic compounds: S R Kumaraswamy, R Somashekar, M S Madhava and D Revannasiddaiah, Mol.Cryst.Liq.Cryst., 268, 51-54 (1995).
86.X-ray analysis of different starch granules: Vasudev sing, R Gopalkrishne Urs, H Somashekarappa, S Z Ali and R Somashekar, Bulletin of Materials Science 18 (5), 549 (1995).
87.Optical properties of spherulites of cholesteryl - do - decyl carbonate : D Krishnegowda, S Kumarswamy, D Revannasiddiah, M S Madhava and R Somashekar, Mol. Cryst. Liq. Cryst., 250, 21 (1994).
88.Phase diagram and optical anisotropy in binary mixtures of two mesogenic compounds: Nagappa, M Marthandappa, K N Jagadish, A Sivaprasad, R Hanumantha Nayak, R Somashekar and V Ravindrachary, Indian J.Phys., 68A, 151 (1994).
89.Electrical conductivity measurements on some nematogenic compounds: S R Kumaraswamy, D Krishnegowda, R Somashekar, M S Madhava and D Revannasiddaiah, J.Mys.Univ.,(B) 33A, 29 (1994).
90.Refractive indices and orientational order parameters of some nematogenic compounds : S R Kumarswamy, K Narayanamurth, R Somashekar , M S Madhava and D Revannasiddaiah, J. Mys. Univ., (b) 33A , 33 (1994).
91.Crystal size and minimum enthalpy of cross breed silk fibres annealed at various temperatures: R Somashekar and R Gopalkrishne Urs,
J.Appl.Poly.Sci., 50, 949 (1993).
92.Crystal size and minimum enthalpy of various races of silk fibres: R Gopalkrishne Urs, G Subramanya and R Somashekar, Textile Research Journal, 63, 610-613 (1993).
93.Simulation of X-ray diffraction patterns for silk fibres using paracrystalline statistics: R Somashekar and R Gopalkrishne Urs, Pramana-J.Phys., 40, 335 (1993).
94.Crystal size distribution in pure Nistari silk fibres: R Somashekar and R Gopalkrishne Ure, Polymer, 34, 2711-2713 (1993).
95.Optical effects from spherulites in polyethylene: D Revannasiddaiah, M S Madhava, R Somashekar and S R Kumarswamy, Mol.Cryst.Liq.Cryst., 237, 217 (1993).
96.Mesomorphic behaviour of lauric acid in DMS: K Narayanamurthy, M S Madhava and R Somashekar, Mol.Cryst.Liq.Cryst., 237, 69-74 (1993).
97.Effect of soap solution on microstructural parameters in silk fibres: R Somashekar and R Gopalkrishne Urs,Materials Letters, 17, 323 (1993).
98.Dispersion of Birefringence in polymer fibers; R Somashekar, R Gopalakrishna Urs and M S Madhava, Journal of Mysore University-section-B,33, 77-81 (1993).
99.Mesomorphic behaviour of binary mixtures of two non-mesogenic compounds: M Marthandappa, Nagappa, R Somashekar and K M Lokanatha rai, Physica Status Solidi, 129, 389 (1992).
100.Crystal size and distortion parameter of natural pure Mysore silk fibres (Bombyx Mori): R Somashekar, R Gopalkrishne Urs and M S Madhava, J. Appl. Poly. Science., 44, 2161-2165 (1992).
101.Debye-Waller factor of lead nitrate: R Somashekar, U D Prahllad and M S Madhava, Pramana - J. Phys., 38, 343-346 (1992).
102.The Viscosity of dodecyl benzene sulfonic acid: R Somashekar, Mysore University Journal-B(Science Section,32,42-43 (1992).
103.Liquid crsytalline behaviour in the mixture of sodium oleate and glacial accetic acid; M Marthandappa, R Somashekar and Nagappa, Journal of Mysore University,32, 57-60 (1992)
104.Anisotropy of Lorentz field factors in p,p'-di-n-alkyl azoxy benzene( Series-I) and p,p'-di-n-alkoxy azoxy benzene (Series II): S R Kumarswamy, D Krishnegowda, R Somashekar and D Revannasiddaiah, Indian J. Phys.,66A 695 (1992).
105.Orientational order and Lorentz field factos in two cyzno biphenyls and their mixtures: S R Kumarswamy, D Krishnegowda, R Somashekar and D Revannasiddaiah, Mysore University Journal-(B-Science,32, 21-27 (1992).
106.Electro-optic effect of nematic liquid crystal: M Marthandappa, Nagappa, R Somashekar, Physica Status Solidi, 127, 259-263 (1991).
107.The determination of crystal size and disorder from the X-ray diffraction photograph of polymer fibres: Matching Intensity profiles: I H Hall and R Somashekar, J.Appl.Cryst., 24, 1051(1991).
108.Temperature factors in symmetric and asymmetric molecules : R Somashekar, Indian J. Physics, 64A, 275-280 (1990).
109.Debye-Waller factor and Debye temperature of sodium thio antimonate : R Somashekar, U D Prahllad and M S Madhava, J.Mat.Sci.,(letters) 9, 279-280 (1990).
110.Effect of annealing on crystal size in pure Mysore silk fibres: R Somashekar and R Gopalkrishneurs, Bull.Mater.Sci., 14, 87-91 (1990).
111.The determination of crystal size and disorder from the X-ray diffraction pattern of polymer fibres: R Somashekar, I H Hall and P D Carr, J Appl.Cryst., 22, 363 (1989).
112.Fourier methods of determining crystallite size and distortion from the X-ray diffraction pattern of polymer fibres: R Somashekar and I H Hall, The Textile Institute Proceedings 31 (1988).

113.Temperature variation of the Debye-Waller factor of  : R Somashekar , U D Prahllad and M S Madhava, J.Mat.Sci.,(letters) 7, 989 (1988).
114.Optical interference studies on single starch granules : A Chandrasekhar, R Somashekar and A Savitri, Starch, 39, 195-197 (1987).
115.Optical anisotropy and local order parameter in homologous series of cholesteryl esters of fatty acids: R Somashekar and M S Madhava, Liquid Crystals 2, 461-466 (1987).
116.X-ray Debye temperatures of   solid solution single crystals: R Somashekar, U D Prahllad and M S Madhava,
J.Mat.Sci.,(letters) 6, 207 (1987).
117.Refractive indices, densities and optical anisotropy of cholesteryl oleate: R Somashekar and M S Madhava, Mol.Cryst.Liq.Cryst., 147, 79-84 (1987).
118.Temperature variation of Debye-Waller factor of   : R Somashekar, U D Prahllad and M S Madhava, J.Mat.Sci.,(letters) 119 , 1103 (1987).
120.Mesomorphic behaviour of n-4(hexadecyl)pyridinium chloride: R Somashekar, Mol. Cryst. Liq. Cryst., 146, 225-233 (1987).
121.Mesomorphic behaviour of a mixtures of cetyl alcohol with dimethyl sulfoxide: R Somashekar, Ch Satyanarayana and M S Madhava, Physis Status Solidi, 90, 449-456 (1985).
122.Lamellar mesophase (G) in mixtures of stearyl alcohol and dimethyl sulfoxide : R Somashekar, Ch Satyanarayana and M S Madhava,
Mol.Cryst.Liq.Cryst., 131, 79-85 (1985).
123.Optical anisotropy and relative order in cholesteryl - n - alkyl carbonates : R Somashekar, Mol. Cryst. Liq. Cryst., 104, 187 (1984).
124.Orientational order of some nematogenic compounds: R Somashekar, Mol. Cryst. Liq. Cryst., 107, 371 (1984).
1215.Optical anisotropy of dodecyl benzene sulfonic acid: R Somashekar, Mol. Cryst. Liq. Cryst., 100, 341-344 (1983).
126.Optical anisotropy of cholesteryl oleyl carbonate: R Somashekar and D Krishnamurti, Mol. Cryst. liq. Cryst., 84, 1-4 (1982).
127.Rotatory dispersion of hexagonal crystals of Al(IO)  H IO  6H O and its temperature variation: M S Madhava and R Somashekar, Current Science, 51, 271-273 (1982).
128.The viscosity of cholesteryl oleyl carbonate: R Somashekar, Current Science, 50, 897 (1981).
129.Mesomorphic behaviour of dodecyl benzene sulfonic acid and its sodium salt: D Krishnamurti and R Somashekar, Mol.Cryst.Liq.Cryst., 65, 3 (1981).
130.Orientational order in n-alkyl-p(4-ethoxy benzylidene amino)-  -methyl cinnamates: D Krishnamurti and R Somashekar, Mol.Cryst.Liq.Cryst., 75, 131 (1981).
131.Crystallographic data of mesogenic 4,4'-bis(heptyloxy) azoxy benzene: R Somashekar and M S Madhava, Current Science, 48, 293 (1979).
132.Birefringence of some nematic compounds: R Somashekar, D Revannasiddaiah, M S Madhava, H S Subramhanyam and D Krishnamurti, Mol.Cryst.Liq.Cryst., 45, 253 (1978).
(iii) CONFERENCE PROCEEDINGS
133.Microcrystalline parameters of Cu-Zn ferrites using line profile analysis (LPA); DAE Solid State Physics Symposium
134.Elastic constants of cotton fiber using WAXS,O M Samir and R Somashekar;Invited talkDAE Solid State Physics Symposium,52 45-48 (2007).
135.Distribution function and microscopic order parameter in the case of a nematic 4,4'-dihexylazoxybenzene using X-rays, S Mohyeddine, R Somashekar and D Revannasiddaiah, ;DAE Solid State Physics Symposium,52 207-208 (2007)
136.X-ray diffraction line profile analysis for microstructural parameters of HPMC pure and 8 MeV EB irradiated films, Sangappa, T Demappa, Mahadevaiah, Devendrappa, S Ganesh and R Somashekar,;DAE Solid State Physics Symposium,52 609-610 (2007)
137.Line profile analysis of X-ray reflections observed in metal-halide doped poly(vinyl)alcohol films, S Divakara , Sangappa, A Manjunath and R Somashekar,;DAE Solid State Physics Symposium,52 611-612 (2007)
138.Microstructural parameters of PMMA pure and MnCl2 filled films using WAXS data, A Manjunath, Sangappa, SS Mahesh, S Divakara and R Somashekar,;DAE Solid State Physics Symposium,52 613-614 (2007).
139.Intrinsic strain and its effect on molecular and crystal structure of Dharwar cotton fibers; O M Samir and R Somashekar, National conference on emerging trends in physics, electronics and engineering sciences, 64-68 (2006)
140.Cooking effect on nano-sized crystallites in some cereals using WAXS data; V K Smitha, N G Malleshi, O M Samir, R Gopalkrishne Urs, SS Mahesh and R Somashekar;National conference on emerging trends in physics, electronics and engineering sciences, 129-132 (2006)
141.Electro-optic study of pure nematics and polymer dispersed liquid crystals; D Sunanda, K K Raina, M S Madhava, D Reveannasiddaiah and R Somashekar, National conference on emerging trends in physics, electronics and engineering sciences, 279-282 (2006)
142.Refractive index, density and orientational order parameter of Propoxy-4-heptyl-4-toluene; S Mohyeddine, R Somashekar and D Revannasiddaiah;National conference on emerging trends in physics, electronics and engineering sciences,291-294(2006)
143.Static dielectric permittivity of nematic 1-(4-trans-hexylcyclohexane)-4-[2-(4-isothiocyanatothenyl)ethyl ] benzene; S Mohyeddine, R Somashekar ,M V Pandey and D Revannasiddaiah; National conference on emerging trends in physics, electronics and engineering sciences, 295-298 (2006)
144.Distribution function and higher order parameters in the case of 1-isothiocyanato-o-(trans-4-propylcyclohexyl)benzene; D Gopalkrishna, R Somashekar and D Revannasiddaiah;National conference on emerging trends in physics, electronics and engineering sciences, 287-290 (2006)
145.Orientational order and Lorentz field factors in a Nematic 1-Isothiocyanato-4-(trans-4-propyl cyclohexyl) Benzene; D Gopalakrishna, D Revannasiddaiah and R Somashekar, DAE Solid State Physics Symposium,50 189-190 (2005)
146.Molecular and crystal structure of DCH32 cotton fiber by using LALS method; O M Samir, Sangappa and R Somashekar;DAE Solid State Physics Symposium,50 327-328 (2005)
147.Microstructural parameters of silk fibroin cellulose composite films: Sangppa, S S Mahesh and R Somashekar, DAE Solid State Physics Symposium,49 374-375 (2004)
148.Crystal structure of Raw Pure Mysore Silk fibre based on peptide sequence using LALS method;S S Mahesh, Sangappa, R Gopalkrishna Urs and R Somashekar DAE Solid State Physics Symposium,49388-389 (2004)
149.Role of crystalline shape and size in cotton fibers using WAXS; S S Mahesh, S Abhishek, H Somashekarappa, V Annandurai , M A Sridhar and R SomashekarDAE Solid State Physics Symposium,49390-391 (2004)
150.Refractive indices, density, and orientational order parameter in the case of a nematic methoxy-4-pentyl-4'-tolane; D Gopalkrishna , R Somashekar and D Revannasiddaiah,DAE Solid State Physics Symposium,49 390-391 (2004)
150.Microscopic order parameter in Nematic phase of a nematogenic compound using X-rays; B Gopalkrishna, D Revannasiddaiah and R Somashekar, DAE Solid State Physics Symposium,46 47 (2003)


151.Size characterisation of micron-size droplets; G K Padmashree, C P Safvan, R Somashekar adn A Roy;Size characterisation of micron-size droplets; G K Padmashree, C P Safvan, R Somashekar adn A Roy; DAE Solid State Physics Symposium,46 283 (2003)
152.Change in shape of the crystallite size with thermal ageing of twaron fibers; Anjana Jain, V Annadurai, S Abhishek, V Sunil Gladson, Sangappa, SS Mahesh and R Somashekar; DAE Solid State Physics Symposium,46 349 (2003)
153.WAXS study of a new variety silk fiber:C.nichi; Sangappa, H Somashekarappa, Kenji Okuyama and R Somashekar, DAE Solid State Physics symposium,45, 223-224(2002).
154.Variation of crystallite shape ellipsoid in non-mulberry silk fibers; H Somashekarappa, R Gopalkrishne urs, Sangappa and R Somashekar, Presented at Solid State Physics Symposium, BARC, Mumbai, Dec, 2001
155.Anisotropic pair potential in a binary nematic mixture, D Sunanda, M S Madhava, D Revannasiddaiah and R Somashekar,Presented at Solid State Physics Symposium, BARC, Mumbai, Dec, 2001
156.Dynamic alignment of CS  in intense picosecond laser field, G K Padmashree, D Mathur, F A Rajgara and R Somashekar, Presented at Solid State Physics Symposium, BARC, Mumbai, Dec, 2001
157.Anisotropic pair potential in two nematogenic compounds, A P Divya, M S Madhava, R Somashekar and D Revannasiddaiah,Presented at Solid State Physics Symposium, BARC, Mumbai, Dec, 2001
158.Crystal and molecular structure of Silk I: Kenji Okuyama, R Somashekar, Keiichi Noguchi and Syuji Ichimura, Presented at Japanese Polymer Society Meeting Held in Sendai, Sep 27-30, 2000.
159.Temperature Modifications of Bilayered Anti-ferroelectric Mesogens based on single crystals: R Somashekar, S Ito, K Noguchi, K Okuyama and Y Suzuki, Presented at Japan Crystallographic Society Meeting held in Sendai, Japan during 21-23 Nov 2000.
160.Structure-property relation in varieties of acid dye processed silk fibres: H Somashekarappa, V Annadurai, C I V Shastry and R Somashekar, Proceedings of solid state Physics symposium, In Press (2000)
161.Variation of phase lengths in nylon 6,6 using SAXS at the Brill transition Proceedings of solid state Physics symposium, In Press (2000)
162.Estimation of radius of gyration in satellite tobacco necrosis virus using SAXS data, V Annadurai, CIV Shastry and R Somashekar,Proceedings of solid state Physics symposium, 42, 295 (1999).
163.Structure-property relation in PBT/ABS-3 polymer blends: H Somashekarappa, V Annadurai and R Somashekar, Proceedings of solid state Physics symposium, 42, 298 (1999).
164.Variation of phase lengths in wet and dry Nylon6 using SAXS, V Annadurai, R Gopalakrishne Urs and R Somashekar, SAXS99, Brookhaven, (Oral Presentation) New York, USA 1999.
165.Induced chiral smectic phase in the mixture of cholesteric and nematic compounds: Nagappa, R Somashekar and B T Raju, (ORAL PRESENTATION) International Union of Materials Research Science, Abs. No 285 Oct, 13-16 (1998).
166.Mechanical and X-ray studies of LDPE films with/withour fillers; Siddaramaiah, R T Nagaralli, K S Jagadeesh and R Somashekar, (Poster Presentation)International Union of Materials Research Science, Abs. No 333 Oct, 13-16 (1998).
167.Synthesis and characterization of castor oil based
polyurethane-polyacrylonitrile interpenetrating polymer networks: P Mallu, Siddaramaiah, and R Somashekar, (Poster Presentation) International Union of Materials Research Science, Abs. No 334 Oct, 13-16 (1998).
168.Mesomorphic behaviour of binary mixture of two non-mesogenic components; J Mahadeva, Nagappa , R Somashekar, P Nagaraj and K R Prasad, Proceedings of the DAE SSP Symposium, 41, 132 (1998).
169.Phase behaviour of liquid crystalline phases in the mixture of two non-mesogenic compounds; B T Raju, Nagappa, R Somashekar, P Nagaraju and Lokanath Rai,Proceedings of the DAE SSP Symposium, 41, 144 (1998).
170.SAXS studies of wet and dry nylon 6 ; R Somashekar and V Annadurai, Proceedings of the DAE SSP Symposium, 41, 243 (1998).
171.Microscopic order parameter of two nematogenic compounds using X-rays: A P Divya, D Revannasiddaiah, M S Madhava and R Somashekar, (ORAL Presentation) International Union of Materials Research Science, Abs. No 286 Oct, 13-16 (1998).
172.Variation of the entropy of the transition in nematic mixtures; R Hanumanthanayak, J Mahadeva, K N Jagadish, R Somashekar and Nagappa,Proceedings of the DAE SSP Symposium, 40, 329 (1997).
173.Use of biaxial nematics in the preparation of polarised , non-oriented spin-1 assembly; Swarnamalasirsi and R Somashekar, Proceedings of the DAE SSP Symposium, 40, 323 (1997).
174.WAXS study on acid modified and neutralized waxy rice starch treated at different periods; R Somashekar and H Somashekarappa, Proceedings of the DAE SSP Symposium, 40, 213 (1997).
175.X-ray studies of silk fibres modified with dibasic acid anhydrides: H Somashekarappa and R Somashekar: Proceedings of the DAE SSP Symposium, 39C, 186 (1996).
176.Smectic mesophase in the mixtures of tristearin with dimethyl sulfoxide, A P Divya, M S Madhava, D Revannasiddaiah and R Somashekar, Proceedings of 16th International Conference of Liquid crystals held in Kent State, USA, 1996.
177.Order parameter and distribution functions for nematogenic OBA and NBA, A P Divya, K Narayanamurthy, M S Madhava , D Revannasiddaiah, and R Somashekar, Proceedings of 16th International Conference of Liquid crystals held in Kent State, USA, 1996.
178.Dielectric relaxation and nematic potential of some nematogenic compounds, S R Kumarswamy, R Somashekar, M S Madhava and D Revannasiddaiah, Proceedings of 16th International Conference of Liquid crystals held in Kent State, USA, 1996.
179.Bi-axial representation of order parameters, Swarnamala Sirsi and R Somashekar, Proceedings of 16th International Conference of Liquid crystals held in Kent State, USA, 1996.
180.X-ray studies of silk fibres modified with dibasic acid anhydrides, H Somashekarappa and R Somashekar, Proceedings of the DAE Solid State Physics Symposium, held at BARC, Mumbai, 1996.
181.Orientational distribution function in the case of a nematogenic IPBOC, S R Kumaraswamy, A P Divya, D Revannasiddaiah, M S Madhava and R Somashekar, Proceedings of National Seminar on Liquid Crystals, held at Patiala, 1996.
182.Electrical conductivity measurement in the case of a nematic 1-(trans-4-hexylcyclohexyl)-4-4-isothio-cyanato benzene(6CHBT) : S R Kumarswamy, D Revannasiddaiah, M S Madhava and R Somashekar, Proceedings of the DAE Solid State Symposium, held at BARC, Mumbai 1996.
183.Determination of crystallite size distribution and lattice distortion in fibrous polymers I H Hall and R Somashekar, Proceedings of the International Union of Crystallographic Research Meeting, Bordeaus, 22 July 1990.
184.Orientational order in homologous series of p,p'-di-n-alkoxy azoxy benzene: R Somashekar,Proceedings of the Solid State Symposium, 27, 118 (1984).
185.Dipole moments of some nematogenic compounds: R Somashekar, M S Madhava and D Krishnamurti, NP and SSP Symposium, Varanasi, 25C, (1982).
186.Refractive indices and orientational order of nematic n-(4'-hexyloxy benzylidene)-p-toluidene: R Somashekar and D Krishnamurti, NP and SSP Symposium, Pune,20C , 366 (1977).

Paper as a part of book

1.Title of the Book: Powder Diffraction Ed: S P Sen Gupta; Chapter 10; Title: Crystal size and strain parameters of fibres using Warren's Fourier method Author: R Somashekar; Allied Publishers Ltd; New Delhi.
2.Title of the Book: Defects and microstructure analysis by diffraction Eds: J Fiala, H J Bunge and R L Snyder, Publisher: Oxford University Press: Chapter 8: Title:Crystal Size and distortion parameters in Fibres using WAXS: Author: R Somashekar.


Conference/seminar organized

Sl no

Status of organizer

Title of the conference

Date

1.

Local organizing committee member

National seminar of crystallography

2005

2.

Co-convener

National seminar of crystallography

2009

3.

Joint Secretary

DAE Solid state physics seminar

2007

International

1.Invited talk at the International Conference "Powder Diffraction held during 21st-28th August 1995 at Slovakia
2.International Liquid Crystal Conference held in Bangalore, India during Jan 1-3, 1996.
3.Conference on Technology and Fibres, Coventry, UK in Dec 1988
4.Japan Crystallographic meeting, Sendai, Japan, Nov 2000
5.Japan Polymer meeting, Sendai, Japan Oct, 2000.
6.Sixth International Conference on Solvothermal reactions held at Department of Studies in Geology, University of Mysore, Mysore, India during 24-28 Aurgust, 2004.
7.Invited talk at 52nd Congress of ISTAM (An International Meet ) at BNMIT, Bangalore, December 14-17, 2007.
8.Invited talk at 52nd DAE Solid State Physics symposium held at Mysore , December 27-31, 2007. Title: Elastic constants of fibers using WAXS

National

1.NP and SSP Symposium held at Pune, Dec 1977
2.NP and SSP Symposium held at Varanasi, Dec 1982
3.Indian Science Congress held at Mysore, Jan 1982
4.NP and SSP Symposium held at Mysore, Dec 1983
5.National Conference on Liquid Crystals and their applications held at Baroda, 1994
6.National Conference on Liquid Crystals held at Mysore , Dec 1993
7.National Conference on X-ray Crystallography held at Mysore, Jan 16, 1995
8.Workshop on Advanced Materials , Mangalore, Dec, 1997
9.Discussion meeting on Advanced Topics of Liquid Crystals, RRI, Bangalore, Dec 28-31, 1998.
10.AsCA meeting held at IISc, BANGALORE. Nov 2001.
11.NSC acquaintance programme held in Department of Physics, JnanaBharati, Bangalore 2002.
12.National Conference on Tropical Sericulture for Global Competitiveness, CSRTI, Mysore, 5-7th November, 2003.
13.National conference on emerging trends in physics, electronics and engineering sciences, 25-26th September 2006, Mysore
14.() 13th National conference on liquid crystals, 9-11th October 2006, Mysore
15.Invited talk at 38th National Seminar on Crystallography, held at Mysoreand organised by Department of Studies in Geology, University of Mysore, Mysore 570006, Feb, 11-13th , 2009. Title: Microstructural parameters of natural fibers using WAXS data

Chairman/member of authority /committee etc


1.Member, Ph D, degree examiner, Anna University, Madras
2.Member, M Sc degree examiner, Karnataka University, Dharwar
3.Member, M Sc degree examiner, Kuvempu University , Shimoga
4.Member, M Sc degree examiner, Mysore University , Mysore
5.Member, M Sc degree examiner, Bangalore University, Bangalore
6.Member, M Sc degree examiner, Mangalore University, Mangalore
7.Member, Academic Council, University of Mysore, Mysore
8.Member, Local Inquiry Committee, Affiliation Committe,University of Mysore,2004
9.Member, Board of Appointment, Bangalore University, Bangalore, 2005,2006
10.Member, Board of Appointment, Gulbarga University, Gulbarga,2005,2006

Membership to professional organization /associations:


1.Life Member, International Liquid Crystal Society, UK
2.Member(1987-89), Institute of Physics, UK
3.Member(1979-85), Indian Physics Association, Mumbai
Any other information


1.X-ray Powder analysis of some compounds supplied by M/s MaxPharm India Ltd, Nanjungud, was carried out and a sum of Rs 2500/- was credited to the University funds.
2.M/s Max Pharm India Ltd after appreciating our earlier work gave another set of samples and we have sent report to the company.


1.I was invited as a visiting fellow by Jawaharlal Nehru Centre for Advanced Scientific Research , Bangalore India and I was at IISc, Bangalore from 22nd Nov 1996 to 17th Dec 1996.
2.I visited IISc, Bangalore, during 17th Nov 1997 to 16 Dec 1997 and gave a talk at Solid State Structural Chemistry, IISc, Bangalore on 15 Dec 1997.
3.Visiting Professor, Under JSPS, Department of Biotechnology, Tokyo University of Agriculture and Technology, Tokyo, Japan during the period 2nd April 2000 to 20th Feb 2001.


1.Fortran program for distortion and crystallite size using WAXS data of fibres.
2.Fortran program for finding the size of crystalline and amorphous regions using SAXS data of fibres.
3.Fortran program for finding the distribution function using outer reflection of fibre X-ray Laue data
4.Fortran program for background correction using Fourier-Bessel surface method.
5.Fortran program for simulation of Laue-type X-ray diffraction patterns form polymer fibres.
1.Recipient of Young Scientist Award, KAAS, Bangalore, India (1986)
2.Invited talk at an International Conference on Powder Diffraction organised by IUCr (international Union of Crystallography, UK)
3.The Commission, International Union of Crystallography, UK have asked me to write a chapter for a book to be released in 1999.
4.Contributed a chapter for a Book on "Powder Diffraction" by S P Sen Gupta, Allied Publisheres, New Delhi, 1998
5.Invited to give a talk at International School on Powder Diffraction, (ISPD'98) at Calcutta, 1998.
6.Elected as a member of Institute of Physics, UK and thereby declared a Chartered Physicist (C.Phys.,)
7.Co-ordinator, Refresher course in Experimental Physics conducted by Indian Academy of Science, Bangalore. November 1 to November 15th , 2004.