Gender

Male

Location

MANDYA, KARNATAKA

Birthday:

April 17

I am...

Physicist

My research field or area of interest innanotechnology

Polymers First-principles calculations Liquid crystals Study of defects and phase transitions

Interest in...

Polymers First-principles calculations Liquid crystals Study of defects and phase transitions

Publication list

1. Structural phase transition in a superionic conductor- Na2(La,Al)Zr(PO4)3 : Positron Annihilation Study. Physica Status Solidi (a) 120, 411 (1990) 2. Radiation induced changes in the free volume properties of the polymer PPO. Physica Status Solidi (a) 124, 441 (1991). 3. Nature of positron trapping centers in a gamma irradiated Nasicon analogue. Physica Status Solidi (a) 128, 1 (1991). 4. Positron lifetime study in the Eutectic alloy Pb50Sn50. Physics Teacher(1992) Jan-Mar 1992 p.11. 5. Positron lifetime study in an eutectic alloy Pb79Sb16Sn5 Material Science Forum Vol 105-110(1992)p.1245. 6. Positron lifetime and optical studies on poly ethylene glycol Material Science Forum Vol 105-110(1992)p.1707. 7. Effect of gamma irradiation on the positron trapping centers in the polymer PPO. Material Science Forum Vol 105-110(1992)p.1245. 8. Structural relaxation and crystallization of metallic glasses – Fe35Co52V13 and Fe45Co45V6Ni4 : Positron annihilation study. Physica Status Solidi (a) 117, 53 (1990) 9. Positron annihilation studies on nasicon analogue containing cation vacancies. Bulletin of Materials Science, 13, No3, 211 (1990). 10.Positron lifetime study on micro-structural changes in Iodine doped polymer PPO. Physica Status Solidi (a)125, 509 (1991). 11.Doppler broadening and conductivity measurements in a nasicon analogue. Solid State Ionics. 48, 173 (1991). 12.Positron annihilation study of structural relaxation and crystallization in a cobalt based metallic glass. Material Science Forum Vol 105-110(1992)p.1201. 13.Isochronal annealing study of positron trapping centers in a polymer matrix. Material Science Forum Vol 105-110(1992)p.1245. 14.Microstructural changes in the polymer Poly Acrylonitrile: A Positron Annihilation Study. Physical Review B, 46, p. 11471 (1992) 15.PLS of the free volume properties in the polymer polyacrylonitrile, Phy Lett A 174 (1993) 428-432. 16. Radiation induced changes in Polyoxymethylene, HRRavi, HR Sreepad and GS Gopalakrishna, Vijnana Prabha – Journal of Sciences, Vol 1, No.1, pp. 22-25 (2011) - ISSN 2231-3214 17. First-principles study of electronic and dielectric properties of Polyoxymethylene. AIP Conf. Proc. 1349, 871-872 (2011): doi: 10.1063/1.3606135. 18. Effect of gamma irradiation in PE-PP block copolymer. Vijnana Prabha – Journal of Sciences, Vol 1, No.2, pp. 05-10 (2011)- ISSN 2231-3214 19. Gamma radiation induced changes in polyoxymethylene – Res. & Reviews in Polymer 2(2), pp. 113-116, (2011). ISSN: 2249 – 8877. 20. Structural Pattern Recognition in Molecules. HRS, Int. J. Machine Intelligence, (ISSN0975- 2927), 3(3), pp- 108-111, 2011 21. Fluorination of Polyformaldehyde: Structural Pattern Recognition Study using First-principles. HRS and MR – Int. J. Machine Intelligence, (ISSN0975-2927), 3(3), pp- 96-99, 2011. 22. FTIR Study for Structural Pattern Changes due to Irradiation in PE-PP Block Copolymer. HRR, HRS and KA – Int. J. Machine Intelligence, (ISSN0975-2927), 3(3), pp- 100-102, 2011. 23. Study of Structural Patterns Exhibited by a Binary Mixture of Smectic and Cholesteryl Compounds. TNG, HRS and Ngp. Int. J. Machine Intelligence, (ISSN0975-2927), 3(3), pp- 112-115, 2011. 24. First-principles study of variation of dielectric constant in Polyoxymethylene. Vijnana Prabha – Journal of Sciences, Vol 1, No.3, pp. 25-28 (2011)- ISSN 2231-3214 25. Micellar Nematic Phase In a Binary Mixture Of Two Non-Mesogenic Compounds Mol. Cryst. Liq. Cryst., Vol. 552: pp. 24–32, 2012. 26. Thermotropic Liquid Crystalline Phases in Binary Mixture of Non-Mesogenic Compounds. TNG, HRS & NGP., Mol. Cryst. Liq. Cryst., Vol. 557: pp. 11–17, 2012. 27. Variation of orientational order parameter in a nematic mixture, TNG, HRS, HMD & Ngp. Vijnana Prabha – Journal of Sciences, Vol 1, No.4, pp. 5-10 (2012)- ISSN 2231-3214 28. First-principles study of Polyethylene. Vijnana Prabha – Journal of Sciences, Vol 1, No.4, pp. 21-24 (2012)- ISSN 2231-3214 29. First-principles Study of L-Alanine, International J. of Res. In Pharmaceutical and Biomedical Sciences (ISSN: 2229-3701), Vol 3, Issue 2, April-June, 2012, pp-797-801 30.Radiation Induced Changes In Electronic And Dielectric Properties Of Polyoxymethylene – AIP Conf. Proc. 1447, 793 (2012); doi: 10.1063/1.4710241. 31.First-principles Study Of Structure And Properties Of The Cyclic Pentamer Of Formaldehyde– AIP Conf. Proc. 1447, 795 (2012); doi: 10.1063/1.4710242. 32.Gamma Radiation Induced Degradation In PE-PP Block Copolymer. AIP Conf. Proc. 1447, 151 (2012); doi: 10.1063/1.4709925 33.Smectic Phases In A Binary Mixture Of Two Non-Mesogenic Compounds – AIP Conf. Proc. 1447, 153 (2012); doi: 10.1063/1.4709926. 34. First-principles study of Polytetrafluoroethylene.  (HRS, MR, KPSSH & UVW.)      Vijnana Prabha – Journal of Sciences, Vol 2, No.1, pp.43-48 (2012)- ISSN 2231-3214 35. Variation of Entropy of transition in a Nematic mixture. (TNG, HRS, JM & Ngp.)      Vijnana Prabha – Journal of Sciences, Vol 2, No.1, pp.37-41 (2012)- ISSN 2231-3214 36. Induced Chiral Smectic Phase In The Mixture Of Mesogenic And Non - Mesogenic Compounds –TNG, NGP, PMS, JM and HRS. Mol. Cryst. Liq. Cryst., Vol. 548: pp. 55–60, 2012 ISSN: 1542- 1406 print/1563-5287 online DOI: 10.1080/15421406.2011.590358 37. Twisted Grain Boundary Phases in Binary Mixture of Smectic and Cholesteryl Compounds Molecular Crystals and Liquid Crystals , Volume: 548, Issue: 01, pages 120 - 125 (2012). 38. Modification of dielectric and structural properties of PVC by gamma irradiation H.R.Ravi, H.R.Sreepad & C.P.Sajan2, Res. & Reviews in Polymer 3(3), 2012 [89-92] ISSN: 2249 – 8877. 39. First-principles study of ethylene tetrafluoroethylene, H.R.Sreepad, Res. & Reviews in Polymer 3(4), 2012 [117-120] ISSN: 2249 – 8877. 40. First-Principles Study Of The Excited-State Properties Of Coumarin 6 Dye In Dye-Sensitized Solar Cells, M. Ramegowda and H. R. Sreepad, International Journal of ChemTech Research CODEN( USA): IJCRGG ISSN : 0974-4290, Vol.4, No.4, pp 1560-1565, Oct-Dec 2012 41. Lyotropic chromonic liquid crystalline nature of berberine in orthophosphoric acid, T.N.Govindaiah, H.R.Sreepad, H.P.Nirmala, Nagappa, Physical Chemistry, PCAIJ, 7(4), pp148-153 (2012). 42. (3-Oxo-3H-benzo[f]chromen-1-yl)methyl N,N-dimethyl-carbamodithio-ate. Mahabaleshwaraiah NM, Ravi HR, Vinduvahini M, Sreepad HR, Kotresh O. Acta Crystall. Sect E Struct Rep Online. 2012 Oct 1;68(Pt 10):o3001. doi: 10.1107/S160053681203975X. Epub 2012 Sep 26. 43. Mesophase Formation In Binary Mixtures Of Berberine and Glacial Acetic Acid T. N. Govindaiah, H. R. Sreepad & Nagappa, Mol. Cryst. Liq. Cryst., 570(1) pp 101 - 108. (2013). DOI:10.1080/15421406.2012.708306. 44. First-principles study of structure and electronic properties of phenyl imidazole H. R. Sreepad, M. Ramegowda, Khaleel Ahmed, H. M. Dayananda, and Manohara AIP Conf. Proc. 1512, 802 (2013); doi: 10.1063/1.4791281 45. First-principles study of fluorination of L-Alanine H. R. Sreepad, H. R. Ravi, Khaleel Ahmed, H. M. Dayananda, K. Umakanth et al. AIP Conf. Proc. 1512, 836 (2013); doi: 10.1063/1.4791298 46. Optical and thermal properties of a lyotropic micellar nematic phase T. N. Govindaiah, H. R. Sreepad, P. M. Sathyanarayana, J. Mahdeva, and Nagappa AIP Conf. Proc. 1512, 114 (2013); doi: 10.1063/1.4790937 47. Twisted Grain Boundary Phase In Binary Mixture Of Liquid Crystals T. N. Govindaiah, Nagappa & H.R. Sreepad (In Press – MCLC) 48. Optical And Thermal Characterization Of Binary Mixtures Of Liquid Crystals T. N. Govindaiah, H.R. Sreepad & Nagappa (In Press – MCLC) (ID: 752301 DOI:10.1080/15421406.2012.752301) 49. Thermal Characterization Of Induced Mesomorphism In Binary Mixture of Cholesteryl and Poly Ethylene Glycol, T. N. Govindaiah, Nagappa & H.R. Sreepad (In Press – MCLC) (ID: 766932 DOI:10.1080/15421406.2013.766932) In National & International Conferences : 1. Positron annihilation studies on the nasicon analogue Na2(La,Al)Zr(PO4)3. 4th National symposium on crystal growth, Mysore, Aug 14-18, 1989. 2. Positron trapping at structural vacancies in a superionic material. Solid State Physics Symposium, IIT Madras, Dec 19-22, 1989. 3. Positron angular correlation studies on defect concentration in Na2(La,Al)Zr(PO4)3 Solid State Physics Symposium, IIT Madras, Dec 19-22, 1989. 4. Positron probe for defect study in nasicon analogue. 8th National Symposium in Radiation Physics, BARC, Bombay, Jan 17-19, 1990. 5. Isochronal annealing study in the Solder alloy (Pb67Sn33) using PLT. National symposium on recent trends in Nuclear Physics, Anna Univ., Madras, Feb 18-20, 1990. 6. Positron annihilation studies on iodine doped polymerPoly(2,6-dimethyl-1,4- Phenylene oxide). S.S.P. Symposium (DAE), BARC, Bombay, Jan 1-4, 1991. 7. Study of defects in a sodium superionic material using positron angular correlation technique. S.S.P. Symposium (DAE), BARC, Bombay, Jan 1-4, 1991. 8. Study of variation of free volume size in the polymer PPO using PLT. S.S.P. Symposium (DAE), BARC, Bombay, Jan 1-4, 1991. 9. Conductivity study in a nasicon analogue. S.S.P. Symposium (DAE), BARC, Bombay, Jan 1-4, 1991. 10. Annealing study in the Pb-Sn alloy using PLT. S.S.P. Symposium (DAE), BARC, Bombay, Jan 1-4, 1991. 11. Radiation induced changes in the free volume of a polymer matrix. International Conf. On Disordered materials(structure & properties), Feb 3-6, 1991. Indore, India. 12. Positron lifetime study on binary amorphous alloy Pb67Sn33. International Conf. On Disordered materials(structure & properties), Feb 3-6, 1991. Indore, India. 13. Positron annihilation study on the free volume properties of a polymer marix. International Conf. On Disordered materials(structure & properties), Feb 3-6, 1991. Indore, India. 14. Positron probe for the study of microstructural changes in the polymer PA. 9th National Symposium on Radiation Physics, Hyderabad, Nov 27-30, 1991. 15. Effect of gamma radiation on positron trapping centers in a nasicon analogue. S.S.P. Symposium held at Varanasi, Dec 27-30, 1991. Vol 34C, p.182 16. Positron trapping rates in a gamma irradiated polymer matrix. S.S.P. Symposium held at Varanasi, Dec 27-30, 1991. Vol 34C, p.183 17. Positron lifetime study of a Cobalt based amorphous alloy. S.S.P. Symposium held at Varanasi, Dec 27-30, 1991. Vol 34C, p.192 18. Dopant induced microstructural study of a polymer by positron annihilation technique. Sol. State Phys. Symp., Tirupathi, 35C, 218 (1992) India 19. Annealing behaviour of TGDDM epoxy resin. Sol. State Phys. Symp., Tirupathi, 35C, 217 (1992) India 20. Phase transition in a Nasicon analogue. Sol. State Phys. Symp., Tirupathi, 35C, 369 (1992) India. 21. Gamma Radiation induced changes in the polymer matix, National level seminar, SJVP College, Harihar, March 3,4 – 2010. 22. First-principles study of electronic and dielectric properties of Polyoxymethylene. S.S.P. Symposium held at Manipal, Dec 26-30, 2010. 23. Radiation induced Degradation in PE-PP block copolymer International Conference and Workshop on New Materials, February 10-12, 2011, Madurai. 24. Degradation of the PE-PP block copolymer due to gamma irradiation. 5th National conference on plastic and rubber technology(POLYCON2011), JCE, 25,26 April 2011. 25. Gamma Radiation induced Degradation in PE-PP block copolymer. International Conf. ICNN 2011 – Coimbatore, July 6-8, 2011. 26. Structural Pattern Recognition in Molecules. HRS - DIPPR – 2011, GC(A), Mandya 27. Fluorination of Polyformaldehyde: Structural Pattern Recognition Study using First-principles. HRS and MR – DIPPR – 2011, GC(A), Mandya 28. FTIR Study for Structural Pattern Changes due to Irradiation in PE-PP Block Copolymer. HRR, HRS and KA – DIPPR – 2011, GC(A), Mandya 29. Study of Structural Patterns Exhibited by a Binary Mixture of Smectic and Cholesteryl Compounds. TNG, HRS and Ngp. DIPPR – 2011, GC(A), Mandya. 30. Radiation Induced Changes In Electronic And Dielectric Properties Of Polyoxymethylene – 56th DAE SSP Symposium- SRM Univ., Kattankulathur – 19-23 Dec 2011. 31. First-principles Study Of Structure And Properties Of The Cyclic Pentamer Of Formaldehyde– 56th DAE SSP Symposium- SRM Univ., Kattankulathur – 19-23 Dec 2011. 32. Gamma Radiation Induced Degradation In PE-PP Block Copolymer – 56th DAE SSP Symposium- SRM Univ., Kattankulathur – 19-23 Dec 2011. 33. Smectic Phases In A Binary Mixture Of Two Non-Mesogenic Compounds – 56th DAE SSP Symposium- SRM Univ., Kattankulathur – 19-23 Dec 2011. 34. First-principles study of structure and electronic properties of phenyl imidazole H. R. Sreepad, M. Ramegowda, Khaleel Ahmed, H. M. Dayananda, and Manohara 57th DAE SSP Symposium- IIT Bombay, Mumbai – 3-7 Dec 2011. 35. First-principles study of fluorination of L-Alanine H. R. Sreepad, H. R. Ravi, Khaleel Ahmed, H. M. Dayananda, K. Umakanth 57th DAE SSP Symposium- IIT Bombay, Mumbai – 3-7 Dec 2011. 36. Optical and thermal properties of a lyotropic micellar nematic phase T. N. Govindaiah, H. R. Sreepad, P. M. Sathyanarayana, J. Mahdeva, and Nagappa 57th DAE SSP Symposium- IIT Bombay, Mumbai – 3-7 Dec 2011. Books ; 1. Physics for I year PUC - Published by Hampi Kannada University – 1994. 2. Physics for II year PUC - Published by Hampi Kannada University – 1995. 3. Supplementary course material for High School Teachers – Published by Department of Physics and Electronics, Yuvaraja college, Mysore – 2005. 4. Aanandayaatre; Published by VISHIST, Doddamudawadi, Ramanagar Dist.2007. 5. Navaratna maale ; Published by Virajananda Satsanga, Holenarasipura, 2008. 6. Bhakthashtaka : Published by VISHIST Mysore Branch, December 2008. 7. UdayaRavi: Published by Sadguru Seva Samithi, Mysore Branch, Mysore, June 2010. 8. “…Ondu Olanota”: Published by VISHIST, Mysore Branch, Mysore, Sept. 2010. 9. Samskara raja – Brahmopadesha; Pub by VISHIST, Mysore Branch, Mysore, July. 2012. 10. Sadguru Namana - Published by Sahajananda JnanaGanga, SACRED Trust,  October 2012 11. Gurukrupa Tarangini - Published by VISHIST Mysore Branch, Jan 2013. 12. (A)Ghorakashtodharana Stotra - Published by VISHIST Mysore Branch, Feb 2013.

Researchgroup, Institute, University, School, Company name

Government College (Autonomous), Mandya

Researchgroup, Institute, Company, University, School webpage

https://sites.google.com/site/sreepadhr

The network creator will send periodical messages to members - you below to allow us to email you

yes