Dr. K. C. Sekhar

Assistant Professor
Central University of Tamil Nadu, India

Highest Degree
Ph.D. in Physics from Indian Institutes of Technology, India

My URL
https://livedna.org/91.26307

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Area of Interest:

Physics
Physics and Informatics
Cellular Signaling
Atomic and Molecular Physics
Nuclear Energy

Selected Publications

  1. Silva, J.P.B., K.C. Sekhar, F. Cortes-Juan, R.F. Negrea and A.C. Kuncser et al., 2018. Ferroelectric photovoltaic characteristics of pulsed laser deposited 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3/ZnO heterostructures. Solar Energy, 167: 18-23.
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  2. Silva, J.P.B., J.M.B. Silva, M.J.S. Oliveira, T. Weingartner, K.C. Sekhar, M. Pereira and M.J. Gomes, 2018. High-performance ferroelectric-dielectric multilayered thin films for energy storage capacitors. Adv. Funct. Mater., (In Press). 10.1002/adfm.201807196.
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  3. Silva, J.P.B., J. Wang, G. Koster, G. Rijnders and R.F. Negrea et al., 2018. Hysteretic characteristics of pulsed laser deposited 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3/ZnO bilayers. ACS Applied Mater. Interfaces, 10: 15240-15249.
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  4. Silva, J.M.B., J.P.B. Silva, K.C. Sekhar, M. Pereira and M.J.M. Gomes, 2018. Impact of the ferroelectric layer thickness on the resistive switching characteristics of ferroelectric/dielectric structures. Applied Phys. Lett., Vol. 113, No. 10. 10.1063/1.5047853.
    CrossRef  |  Direct Link  |  

  5. Oliveira, M.J.S., J.P.B. Silva, K Veltruska, V. Matolin and K.C. Sekhar et al., 2018. Annealing induced effect on the physical properties of ion-beam sputtered 0.5 Ba(Zr0.2Ti0.8)O3 - 0.5 (Ba0.7Ca0.3)TiO3-δ ferroelectric thin films. Applied Surf. Sci., 443: 354-360.
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  6. Kamakshi, K., J.P.B. Silva, K.C. Sekhar, J.A. Moreira, A. Almeida, M. Pereira and M.J.M. Gomes, 2018. Substrate temperature effect on microstructure, optical and glucose sensing characteristics of pulsed laser deposited silver nanoparticles. Plasmonics, 13: 1235-1241.
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  7. Jayakrishnan, A.R., K.V. Alex, A. Thomas, J.P.B. Silva and K. Kamakshi et al., 2018. Composition-dependent xBa(Zr0.2Ti0.8)O3-(1-x)(Ba0.7Ca0.3)TiO3 bulk ceramics for high energy storage applications. Ceram. Int., (In Press). 10.1016/j.ceramint.2018.11.250.
    CrossRef  |  Direct Link  |  

  8. Silva, J.P.B., M. Vorokhta, F. Dvorak, K.C. Sekhar and V. Matolin et al., 2017. Unraveling the resistive switching effect in ZnO/0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 heterostructures. Applied Surf. Sci., 400: 453-460.
    CrossRef  |  Direct Link  |  

  9. Silva, J.P.B., K. Kamakshi, K.C. Sekhar, X.R. Novoa and E.C. Queiros et al., 2017. Light controlled resistive switching and photovoltaic effects in ferroelectric 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 thin films. J. Eur. Ceram. Soc., 37: 583-591.
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  10. Silva, J.P.B., F.L. Faita, K. Kamakshi, K.C. Sekhar and J.A. Moreira et al., 2017. Enhanced resistive switching characteristics in Pt/BaTiO3/ITO structures through insertion of HfO2:Al2O3 (HAO) dielectric thin layer. Scient. Rep., Vol. 7. 10.1038/srep46350.
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  11. Kunti, A.K., K.C. Sekhar, M. Pereira, M.J.M. Gomes and S.K. Sharma, 2017. Oxygen partial pressure induced effects on the microstructure and the luminescence properties of pulsed laser deposited TiO2 thin films. AIP Adv., Vol. 7, No. 1. 10.1063/1.4973721.
    CrossRef  |  Direct Link  |  

  12. Silva, J.P.B., K. Kamakshi, K.C. Sekhar, J.A. Moreira, A. Almeida, M. Pereira and M.J.M. Gomes, 2016. Light-controlled resistive switching in laser-assisted annealed Ba0.8Sr0.2TiO3 thin films. Physica Status Solidi (a), 213: 1082-1087.
    CrossRef  |  Direct Link  |  

  13. Silva, J.P.B., K. Kamakshi, K.C. Sekhar, J.A. Moreira, A. Almeida, M. Pereira and M.J.M. Gomes, 2016. Ferroelectric polarization and resistive switching characteristics of ion beam assisted sputter deposited BaTiO3 thin films. J. Phys. Chem. Solids, 92: 7-10.
    CrossRef  |  Direct Link  |  

  14. Silva, J.P.B., K. Kamakshi, K.C. Sekhar, E.C. Queiros and J.A. Moreira et al., 2016. Resistive switching in ferroelectric lead-free 0.5Ba (Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 thin films. J. Phys. D: Applied Phys., Vol. 49, No. 33. 10.1088/0022-3727/49/33/335301.
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  15. Kunti, A.K., K.C. Sekhar, M. Pereira, M.J.M. Gomes and S.K. Sharma, 2016. Synthesis, structural and luminescence studies of pyrochlore phase free TiO2:Dy3+ produced by solid-state reaction method. Int. J. Applied Ceram. Technol., 13: 1139-1148.
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  16. Kamakshi, K., J.P.B. Silva, K.C. Sekhar, G. Marslin and J.A. Moreira et al., 2016. Influence of substrate temperature on the properties of pulsed laser deposited silver nanoparticle thin films and their application in SERS detection of bovine serum albumin. Applied Phys. B, Vol. 122, No. 5. 10.1007/s00340-016-6385-0.
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  17. Choi, H.R., K. Sekhar, A.R. Jo and Y.S. Cho, 2016. Dielectric characteristics of UV-curable CaCu3Ti4O12 composite thick film capacitors on Cu foils. Int. J. Applied Ceram. Technol., 13: 685-689.
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  18. Silva, J.P.B., E.C. Queiros, P.B. Tavares, K.C. Sekhar and K. Kamakshi et al., 2015. Ferroelectric phase transitions studies in 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 ceramics. J. Electroceram., 35: 135-140.
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  19. Sekhar, K.C., K. Kamakshi, S. Bernstorff and M.J. Gomes, 2015. Effect of annealing temperature on photoluminescence and resistive switching characteristics of ZnO/Al2O3 multilayer nanostructures. J. Alloys Compd., 619: 248-252.
    CrossRef  |  Direct Link  |  

  20. Karzazi, O., K.C. Sekhar, A. El Amiri, E.K. Hlil and O. Conde et al., 2015. Structural, optical and magnetic properties of pulsed laser deposited co-doped ZnO films. J. Magn. Magn. Mater., 395: 28-33.
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  21. Kamakshi, K., K.C. Sekhar, A. Almeida, J.A. Moreira and M.J.M. Gomes, 2015. Surface plasmon resonance-coupled photoluminescence and resistive switching behavior of pulsed laser-deposited Ag:SiC nanocermet thin films. Plasmonics, 10: 1211-1217.
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  22. Sekhar, K.C., S. Levichev, M. Buljan, S. Bernstorff and K. Kamakshi et al., 2014. Effect of bi-layer ratio in ZnO/Al2O3 multilayers on microstructure and functional properties of ZnO nanocrystals embedded in Al2O3 matrix. Applied Phys. A, 115: 283-289.
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  23. Kamakshi, K., K.C. Sekhar, A. Almeida, J.A. Moreira and M.J.M. Gomes, 2014. Tuning the surface plasmon resonance and surface-enhanced Raman scattering of pulsed laser deposited silver nanoparticle films by ambience and deposition temperature. J. Opt., Vol. 16, No. 5. 10.1088/2040-8978/16/5/055002.
    CrossRef  |  Direct Link  |  

  24. Silva, J.P.B., S.A.S. Rodrigues, K.C. Sekhar, M. Pereira and M.J.M. Gomes, 2013. Ferroelectric properties of pulsed laser deposited PZT (92/8) thin films. J. Mater. Sci.: Mater. Electron., 24: 5097-5101.
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  25. Silva, J.P.B., K.C. Sekhar, S.A.S. Rodrigues, M. Pereira and A. Parisini et al., 2013. On the formation of an interface amorphous layer in nanostructured ferroelectric Ba0.8Sr0.2TiO3 thin films integrated on Pt-Si and its effect on the electrical properties. Applied Surf. Sci., 278: 136-141.
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  26. Silva, J.P.B., K.C. Sekhar, A. Almeida, J.A. Moreira, M. Pereira and M.J.M. Gomes, 2013. Influence of laser repetition rate on ferroelectric properties of pulsed laser deposited BaTiO3 films on platinized silicon substrate. Applied Phys. A, 113: 379-384.
    CrossRef  |  Direct Link  |  

  27. Silva, J.P.B., K.C. Sekhar, A. Almeida, J.A. Moreira, M. Pereira and M.J.M. Gomes, 2013. Effects of oxygen partial pressure on the ferroelectric properties of pulsed laser deposited Ba0.8Sr0.2TiO3 thin films. Applied Phys. A, 113: 817-824.
    CrossRef  |  Direct Link  |  

  28. Sekhar, K.C., S. Levichev, K. Kamakshi, S. Doyle, A. Chahboun and M.J.M. Gomes, 2013. Effect of rapid thermal annealing on texture and properties of pulsed laser deposited zinc oxide thin films. Mater. Lett., 98: 149-152.
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  29. Sekhar, K.C., K.P. Hong, S.H. Key, C.S. Han and J.C. Kim et al., 2013. Enhanced dielectric and tunable characteristics of K-doped Ba0.5Sr0.5TiO3 thin films prepared by pulsed laser deposition. Thin Solid Films, 527: 267-272.
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  30. Sekhar, K.C., J.P.B. Silva, K. Kamakshi, M. Pereira and M.J.M. Gomes, 2013. Semiconductor layer thickness impact on optical and resistive switching behavior of pulsed laser deposited BaTiO3/ZnO heterostructures. Applied Phys. Lett., Vol. 102, No. 21. 10.1063/1.4809531.
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  31. Silva, J.P.B., K.C. Sekhar, S.A.S. Rodrigues, A. Khodorov, J. Martin-Sanchez, M. Pereira and M.J. Gomes, 2012. Ferroelectric switching behavior of pulsed laser deposited Ba0.8Sr0.2TiO3 thin films. Curr. Applied Phys., 12: 1144-1147.
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  32. Silva, J.P.B., K.C. Sekhar, A. Almeida, J.A. Moreira and J. Martin-Sanchez et al., 2012. Effect of Pt bottom electrode texture selection on the tetragonality and physical properties of Ba0.8Sr0.2TiO3 thin films produced by pulsed laser deposition. J. Applied Phys., Vol. 112, No. 4. 10.1063/1.4748288.
    CrossRef  |  Direct Link  |  

  33. Sekhar, K.C., S.H. Key, K.P. Hong, C.S. Han and J.M. Yook et al., 2012. Thickness-dependent tunable characteristics of (Ba0.5Sr0.5)0.925K0.075TiO3 thin films prepared by pulsed laser deposition. Curr. Applied Phys., 12: 654-658.
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  34. Sekhar, K.C., A. Khodorov, A. Chahboun, S. Levichev and A. Almeida et al., 2012. Oxygen partial pressure effect on structural and electrical behavior of pulsed laser deposited Zn0.98Co0.02O thin films. Mater. Chem. Phys., 135: 174-180.
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  35. Reddy, A.V., K.C. Sekhar, N. Dabra, A. Nautiyal, J.S. Hundal, N.P. Pathak and R. Nath, 2011. Ferroelectric and magnetic properties of hot-pressed BiFeO3-PVDF composite films. ISRN Mater. Sci., Vol. 2011. 10.5402/2011/142968.
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  36. Nautiyal, A., N. Dabra, K.C. Sekhar, J.S. Hundal, N.P. Pathak and R. Nath, 2011. Switching kinetics in cesium nitrate: Poly (vinyl alcohol) composite film. Ferroelectr. Lett., 38: 51-58.
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  37. Nautiyal, A., K.C. Sekhar, N.P. Pathak, N. Dabra, J.S. Hundal and R. Nath, 2010. Polarization switching properties of spray deposited CsNO3: PVA composite films. Applied Phys. A, 99: 941-946.
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  38. Nautiyal, A., K.C. Sekhar, N.P. Pathak and R. Nath, 2010. Study of ferroelectric properties of spray pyrolysis deposited cesium nitrate films. Thin Solid Films, 518: e143-e145.
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  39. Doo, S.H.N., Y.H. Jo, J.S. Lee, B.C. Mohanty, K.C. Sekhar and Y.S. Cho, 2010. Enhanced quality factor of zinc lanthanum borates-based dielectrics via the control of ZnO/B2O3 ratio. J. Am. Ceram. Soc., 93: 334-337.
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  40. Dabra, N., J.S. Hundal, A. Nautiyal, K.C. Sekhar and R. Nath, 2010. Analysis of ferroelectric polarization switching in (NH4)0.39K0.61NO3 films using nucleation limited switching model. J. Applied Phys., Vol. 108, No. 2. 10.1063/1.3457228.
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  41. Sekhar, K.C., A. Nautiyal and R. Nath, 2009. Structural and ferroelectric properties of spray deposited sodium nitrite:poly(vinyl alcohol) composite films. J. Applied Phys., Vol. 105, No. 2. 10.1063/1.3072626.
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  42. Sekhar, K.C., A. Nautiyal and R. Nath, 2009. Structural and ferroelectric properties of NaNO2: PVF composite film. Adv. Mater. Res., 67: 83-88.
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  43. Sekhar, K.C., A. Nautiyal and R. Nath, 2009. Analysis of ferroelectric switching in sodium nitrite:poly (vinyl alcohol) nanocomposite films. Applied Phys. A, 95: 415-421.
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  44. Sekhar, K.C. and R. Nath, 2009. Polarization reversal behavior of spray deposited sodium nitrite:poly(vinyl alcohol) composite films. Applied Phys. Lett., Vol. 94, No. 10. 10.1063/1.3098355.
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  45. Nautiyal, A., K.C. Sekhar, N.P. Pathak and R. Nath, 2009. Ferroelectric and phase transition studies in cesium nitrate: Poly(vinyl alcohol) composite films. Applied Phys. A, 97: 205-210.
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  46. Dabra, N., J.S. Hundal, K.C. Sekhar, A. Nautiyal and R. Nath, 2009. Preparation and characterization of the ferroelectric potassium nitrate: Poly(vinyl alcohol) composite films. IEEE Trans. Ultrason. Ferroelectr. Frequency Control, 56: 1627-1633.
    CrossRef  |  PubMed  |  Direct Link  |  

  47. Dabra, N., J.S. Hundal, K.C. Sekhar, A. Nautiyal and R. Nath, 2009. Ferroelectric phase stability studies in spray deposited KNO3:PVA composite films. J. Am. Ceram. Soc., 92: 834-838.
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  48. Sekhar, K.C., A. Nautiyal and R. Nath, 2008. Polarization switching in ferroelectric sodium nitrite thick film. Applied Phys. Express, Vol. 1, No. 9. 10.1143/APEX.1.091601.
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  49. Sekhar, K.C. and R. Nath, 2007. Study of ferroelectric properties in sodium nitrite:poly(vinyl alcohol) nanocomposite films. J. Applied Phys., Vol. 102, No. 4. 10.1063/1.2772599.
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