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V. Jayaram

by | Nov 6, 2015 | Faculty | 0 comments

Assistant Professor
Ph.D. UPMC, Paris-6
Email: mondal@iisc.ac.in
Phone: +91 9932207177

Shock waves in materials research and development of facilities: 

  1. Synthesis of ultra-high-temperature ceramics (UHTC), thermal barrier coating (TBC) and thermal protection system (TPS)materials by RF/DC magnetron sputtering, solution combustion and shock wave methods.
  2. Established the shock tube facilities to elevate the temperature of mono and di-atomic gas species to about 25000 K at medium pressure of 10-200 bar for 1-5 ms time scale.
  3. Study of phase transformation, surface modification, oxidation resistance and catalysity of high temperature materials in presence of strong shock heated test gases.
  4. Effect of super heating and coolingof materials (at the rate of about 1-20 MK/s) after strong shock treatment.
  5. Indo-French research initiative on Chemistry, Kinetics and Spectroscopy in Extreme Environments: Applications to Astro-chemistry and Astro-physics.
  6. Indo-Israel research initiative to synthesis strong shock resistance materials like inorganic fullerenes and layered materials.
  7. Design and fabrication of major scientific equipment such as Electron Energy Loss Spectrometer (EELS) and Ultraviolet Photoelectron Spectrometer (UPS) for molecules and gas phase, EEL Spectrometer and Secondary Electron Emission Spectrometer (SEES) for solid surfaceshad been developed for the first time in India.

Representative Publications:

  1. LudovicBiennier, V. Jayaram, Nicolas Suas-David, Robert Georges, Kiran Singh, E. Arunan, Samir Kassi, Emmanuel Dartois and Reddy. K.P. J, “Shock-wave processing of C60in hydrogen”,Astron. and Astrophys.,pp. 1-12, (Article In Press).
  2. V. Jayaram and Reddy.K. P. J,“Catalytic effect of CeO2-stabilized ZrO2 ceramics with strong shock-heated mono- and Di-atomic gases”, J. Am. Ceram. Soc., pp. 1-9 (2016).DOI: 10.1111/jace.14454.
  3. V. Jayaram and Reddy.K. P. J, “Experimental Study of the Effect ofStrong Shock Heated Test Gases with Cubic Zirconia,” Adv. Mater. Lett., 7 [11], pp. 122-127 (2016).DOI: 10.5185/amlett.2016.6379.
  4. V. Jayaram, “Shock-induced reversible phase transformation from rutile to anatase in TiO2 powders”, SAMPE proceedings,LB15-0212, pp. 1-14 (2016).
  5. V. Jayaram. V, Asha Gupta and Reddy. K. P. J, “Investigation of strong shock wave interactions with CeO2 ceramic”,Journal of Advanced Ceramics, 3 [4], pp. 297–305 (2014).
  6. O. Brontvein, V. Jayaram, Reddy. K. P. J, J. M. Gordon, R. Tenne, “Two-step synthesis of  MoS2 nanotubes using shock waves with lead as growth promoter”, Z. Anorg. Allg. Chem., 640 [6], pp.1152–1158 (2014).
  7. N. Koteeswara Reddy, V. Jayaram, E. Arunan, Y. B. Kwon, W.J. Moon, Reddy. K. P. J,“Investigations on high enthalpy shock wave exposed graphitic carbon nanoparticles”, Diamond & Related Materials, 35, pp. 53 (2013).
  8. K. Vasu, H. S. S. R. Matte, Sharmila N. Shirodkar, V. Jayaram, Reddy. K. P. J, Umesh V. Waghmare, C. N. R. Rao, “Effect of high temperature shock-waves compression on few-layer MoS2, WS2 and MoSe2”, Chemical Physics Letters, 582, pp. 105 (2013).
  9. LudovicBiennier, Robert Georges, VijayanandChandrasekaran, Bertrand Rowe, Thierry Bataille, V. Jayaram, Reddy. K. P. J, and E. Arunan, “Characterization of circumstellar carbonaceous dust analogues produced by pyrolysis of acetylene in a porous graphite reactor”, Carbon,47, pp. 3295-3305 (2009).
  10. P. Bera, K. R. Priolkar, A. Gayen, P. R. Sarode, M. S. Hegde, S. Emura, R. Kumashiro, V. Jayaram and G. N. Subbanna , “ Ionic dispersion of Pt over CeO2 by combustion method: Structural investigation by XRD, TEM, XPS and EXAFS”, Chem. Mater., 15, pp. 2049-2060 (2003).
  11. C. L. Aravinda, P. Bera, V. Jayaram, and S. M. Mayanna, “An X-ray photoelectron spectroscopic study of electrochemically deposited Fe-P thin film on Cupper substrate”, Appl. Surf. Sci., 191, pp. 254 (2002).
  12. C. L. Aravinda, P. Bera, V. Jayaram, A. K. Sharma and S. M. Mayanna, “Characterization of electrochemically deposited Cu-Ni black coatings”, Matter. Res. Bull., 37, pp. 397 (2002).
  13. P. Bera, K. C. Patil, V. Jayaram, G. N. Subbanna and M. S. Hegde, “Ionic dispersion of Pt and Pd on CeO2 by combustion method: Effect of metal-ceria interaction on catalytic activities for NO reduction, CO and hydrocarbon oxidation”, J. Catal., 196, pp. 293 (2000).
  14. P. Bera, K. C. Patil, V. Jayaram, M. S. Hegde and G. N. Subbanna, “Combustion synthesis of nanometals supported on α- Al2O3: CO oxidation and NO reduction catalysts”, J. Mater. Chem., 9, pp. 1801 (1999).
  15. V. Jayaram, G. U. Kulakarni and C. N. R. Rao, “Study of the electronic structures of high Tc cuprate superconductors by electron energy loss spectrometer and secondary electron emission spectroscopy”, Solid State Communication, 72 [1], pp. 101-105 (1989)
  16. V. Jayaram, “Design and fabrication of an electron energy loss spectrometer for investigating electronic structures of solid surfaces”, Indian Journal of Pure & Applied Physics, 27, pp. 429-437 (1989).
  17. V. Jayaram, M. S. Hegde,“Design and fabrication of an ultraviolet photoelectron spectrometer for the study of free molecules”, Proc. Indian Acad. Sci., 97 [5 & 6], pp. 617-626 (1986).
  18. M. S. Hegde, V. Jayaram, P. Vishnu Kamath and C. N. R. Rao, “Electron energy loss spectroscopy (EELS) of organic molecules in vapour phase: Design and fabrication of an indigenous EEL spectrometer”, Pramana, 24 [1 & 2], pp. 293-310 (1985).