© Division for Research in Advanced Materials, CUSAT

Division For Research in Advanced Materials

Department of Physics
Cochin University of Science and Technology
 Time in Cochin

Recent publications


  • Exceptionally crystalline and conducting acid doped polyaniline films by level surface assisted solution casting approach,  Anand B. Puthirath, Shijeesh Methattel Raman, Sreekanth J. Varma and Jayalekshmi, Applied Physics Letters, 2016, 108, 161901

  • Impressive electromagnetic shielding effects exhibited by highly ordered, micrometer thick polyaniline films, Ranjini R. Mohan, Sreekanth J. Varma and Jayalekshmi Sankaran, Applied Physics Letters, 2016, 108, 154101

  • Semiconducting thienylene–biphenylenevinylene hybrid polymers: Synthesis, characterization and application prospects in polymer LEDs,     Vidya Gopia, Sreekanth J. Varma, M.V. Mahesh Kumard, S. Prathapan S. Jayalekshmi, Rani Joseph, Dyes and Pigments, 2016, 126,  303–312


  • Lithium doped Polyaniline and its composites with LiFePO4 and LiMn2O4 - Prospective cathode active materials for environment friendly and flexible Li-ion battery applications, Anand .B. Puthirath, Bibin John, C. Gouri, S. Jayalekshmi, RSC Advances, 2015, 5,  69220-69228.
  • Lithium doped PEO-a prospective solid electrolyte with high ionic conductivity, developed using n-butyl lithium in hexane as dopant, Anand .B. Puthirath, Bibin John, C. Gouri, S. Jayalekshmi,  Ionics, 2015, 21, 2185-2191.

  • Polyaniline/graphene hybrid film as an effective broadband electromagnetic shield", Ranjini. R .Maohan, Sreekanth. J. Varma, Muhammad Faisal, S. Jayalekshmi, RSC Advances , 2015, 5, 5917-5923


  • Cytotoxicity and cellular uptake of ZnS:Mn nanocrystals biofunctionalized with chitosan and aminoacids, M. Sajimol Augustineb, Abdulaziz Anas, Ani V. Das, S. Sreekanth, S. Jayalekshmi , Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy,Volume 136, Part B, 5 February 2015, Pages 327–333

  • Enhanced photoluminescence in transparent thin films of polyaniline-zinc oxide nanocomposite prepared from oleic acid modified zinc oxide nanoparticles, M. Sajimol Augustine, P. P Jeeju, S.J.Varma, Francis Xavier, S.Jayalekshmi, Thin Solid Films, Volume 562, 1 July 2014, Pages 84–89

  • On the structural and impedance characteristics of Li- doped PEO, using n-butyl lithium in hexane as dopant,   P. B. Anand, S. Jayalekshmi, AIP Conf. Proc. 1576, 159 (2014)


  • Enhanced linear and nonlinear optical properties of thermally stable ZnO/poly(styrene)–poly(methyl methacrylate) nanocomposite films, P.P. Jeeju , S. Jayalekshmi , K. Chandrasekharan b , P. Sudheesh, Thin Solid Films 531 (2013) 378–384

  • Observation of switching between SA and RSA in silver/goldpolyaniline nanocomposite films, P. B. Anand, S. Jayalekshmi, Plasmonics: Metallic Nanostructures and Their Optical Properties XI, Proc. of SPIE Vol. 8809 88092B-1

  • Highly luminescent and biocompatible, L-citrulline-capped ZnS:Mn nanocrystals for rapid screening of metal accumulating Lysinibacillus fusiformis bacteria, Augustine M. Sajimol, Alex Roselin, V.G. Sreevalsa, G.D. Deepa, G. Bhat Saritab and S. Jayalekshmi, Luminescence,Volume 28, Issue 4, pages 461–467, July/August 2013

  • Size-dependent optical properties of bio-compatible ZnS:Mn nanocrystals and their application in the immobilization of trypsin, M. Sajimol Augustine, P.P. Manzur Ali , K. Sapna , K.K. Elyas , S. Jayalekshmi,Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, Volume 108, May 2013, Pages 223–228

  • "Exceptionally good, transparent and flexible FeS2/PVP and FeS2/PVA nanocomposite thin films with excellent UV-shielding properties", M. Sajimol; P.B. Anand; K.M. Anil Kumar; S. Jayalekshmi Polymer International,Volume 62, Issue 4, pages 670–675, April 2013

  • On the structural and electrochemical properties of Li-ion cells based on Lithium doped (n-butyl Lithium in hexane as dopant) polyaniline (LIPO) as cathode active material, Anand, P. B., Tomy Rajive. M., Anilkumar K. M., Jayalekshmi. S,  Annual International Conference on Optoelectronics, Photonics & ;04/02/2013, page 78  DOI: 10.5176/2301-3516_OPAP13.07


  • Size dependant nonlinear optical properties of spin coated ZnO/Polystyrene nanocomposite films, Jeeju. P. P, S. Jayalekshmi, K Chandrasekharan, P Sudheesh , Polymer Internatioanal. 60: 1263–1268 (2011)

  • Novel Polypyrrole films with excellent crystallinity and good thermal stability", P.P.Jeeju, S. J.Varma, P.A.Francis Xavier, A. M. Sajimol, S.Jayalekshmi,   Materials chemistry and physics, 34 (2012) pp. 803-808

  • On the structural and optical properties of gold.polyaniline nanocomposite synthesized via a novel route, P. B. Anand, K. Hasna, K. M. Anilkumar and S. Jayalekshmi.  Polymer International, Volume 61, Issue 12, pages 1733–1738, December 2012

  • Effect of annealing on the electrochemical properties of the Li-Mn-O thin films, prepared by high frequency RF magnetron sputtering, M. Rajive Tomy, , K.M. Anil Kumar, P.B. Anand, S. Jayalekshmi, Journal of Physics and Chemistry of Solids,Volume 73, Issue 4, April 2012, Pages 559-563

  • Effect of annealing on structural and electrical properties of the Li-Mn-O thin films, prepared by high frequency RF magnetron sputtering, M. Rajive Tomy, , K.M. Anil Kumar, P.B. Anand, S. Jayalekshmi, Journal of Physics and Chemistry of Solids,Volume 72 , 2012, Pages  1251-1255

  • Quantum confinement effects in highly conducting, ultrathin polyaniline flms pursued through spectroscopic investigations, Sreekanth J. Varma, , Jerin George, P.P. Jeeju, S. Jayalekshmi, Journal of Luminescence,Volume 132, Issue 3, March 2012, Pages 801-805

  • Synthesis and studies on exceptionally crystalline polyaniline thin films, Sreekanth J Varma, Francis Xavier, Soney Varghese, S. Jayalekshmi, Polymer International,Volume 61, Issue 5, pages 743-748, May 2012

  • "Excellent UV absorption in spin-coated thin films of oleic acid modified Zinc oxide nanorods embedded in Polyvinyl alcohol" M. Sajimol Augustine, , P.P. Jeeju, V.G. Sreevalsa, S. Jayalekshmi, Journal of Physics and Chemistry of Solids,Volume 73, Issue 3, March 2012, Pages 396-401

  • L histidine modified bio-compactible ZnO nanocrystals , Sreevalsa V.G, Jeeju P P , Sajimol Augustine Anilkumar K M , S Jayalekshmi, Journal of Experimental Nanoscience , 29, page 1-10 2012


  • Studies on the thermal, optical and dielectric properties of a new nonlinear optical crystal - L-citrulline oxalate grown by slow evaporation technique,  Sreevalsa V. G, Jayalekshmi S.  Transactions of the Indian Institute of Metals, 2011, vol. 64, no1-2, pp. 205-208

  • Characterization Of  Transparent PVA/Amino acid complex capped ZnO nano composite films,Sreevalsa V. G., Sajimol Augustine M. and Jayalekshmi S. , INTERNATIONAL JOURNAL OF PLASTICS TECHNOLOGY, Volume 15, Supplement 1 (2011), 10-18

  • Investigations on the growth and characterization of l-citrulline oxalate monohydrate single crystal ,  V.G. Sreevalsa, , S. Jayalekshmi, Journal of Crystal Growth, Volume 324, Issue 1, 1 June 2011, Pages 172-176

  • "On the interesting optical properties of highly transparent, thermally stable, spin coated Polystyrene (PS) /Zinc Oxide (ZnO) nanocomposite films"   P. P. Jeeju, S. Jayalekshmi, Journal of Applied Polymer Science Volume 120, Issue 3, pages 1361-1366, 5 May 2011

  • "Size dependent optical properties of transparent, spin coated Polystyrene/Zinc Oxide nanocomposite films" Pullarkat P Jeeju, Augustine M Sajimol, Vallath G Sreevalsa,Sreekanth J Varma and S Jayalekshmi, Polymer International,Volume 60, Issue 8, 14 APR 2011

  • A Cost effective, fully automated electrochemical Characterization setup for thin film LI-ion battery research,  Rajive Tomy M, Anil Kumar K M and S Jayalekshmi, Journal of Instrument Society of India, Vol 41, No. 2, June 2011

  • Enhanced photoluminescence in oleic acid modified polyaniline M. Sajimol Augustine, S. J. Varma, P. A. Francis Xavier and S. Jayalekshmi Transactions of the Indian Institute of Metals Volume 64, Numbers 1-2 (2011)

  • Thermal diffusivity measurements in PANI and PANI-MWNT composites using photo acoustic technique M. Amrithesh, P. A. Francis Xavier, V. Ganesh Chandraprabhu, S. Jayalekshmi, S. Thomas Lee and Jyotsna Ravi Transactions Of The Indian Institute Of Metals Volume 64, Numbers 1-2 (2011)

  • Investigations on the nonlinear optical properties of glycinium oxalate single crystals K. J. Arun and S. Jayalekshmi Optoelectronics Letters Volume 7, Number 2 (2011), 136-138

  • Adsorption Studies of Nanocrystalline MgO in 1,2- Dichloromethane Solution by FTIR Spectroscopy. Jagadeesh, M. Junaid Bushiri and S. Jayalekshmi,  International Journal of Nanotechnology and Applications (IJNA) K.S. PP.341-344, 2011


  • On the prospects of Polyaniline and Polyaniline/MWNT Composites for possible pressure sensing applications"; S.J.Varma, S.Jayalekshmi, Journal of Applied Polymer Science, 2010,   Volume 117 Issue 1, Pages 138 - 142

  • Urbach tail analysis on the defect states of polypyrrole thin films prepared by a.c.plasma polymerization,  K.Joseph John,U.S.Sajeev and S.Jayalekshmi, e-Polymers - The European Polymer Federation, Internet based, peer reviewed Journal , 2010

  • Effect of iron doping and annealing on structural and optical properties of cerium oxide nanocrystals, T. Dhannia , S. Jayalekshmi, M.C. Santhosh Kumar, T. Prasada Rao and A. Chandra Bose, Journal of Physics and Chemistry of Solids, 2010, Volume 71, Issue 7, Pages 1020-1025

  • Investigations on the mechanism of carrier transport in plasma polymerized pyrrole thin films, Joseph John, Sajeev Sivaraman, S. Jayalekshmi, M.R. Anantharaman, Journal of Physics and Chemistry of Solids , Volume 71, Issue 7, Pages 935-939, (2010)


  • Growth and characterization of nonlinear optical single crystals of L-alaninium oxalate, Arun.K.J, S.Jayalekshmi, Journal of Minerals and Materials Characterization & Engineering, U.S.A,  2009, Vol. 8, No. 8, pp 635-646

  • Effect of aluminium doping and annealing on structural and optical properties of     cerium oxide nanocrystals, T. Dhannia, S. Jayalekshmi, M.C. Santhosh Kumar, T. Prasada Rao and A. Chandra Bose,  Journal of Physics and Chemistry of  Solids, Volume 70, Issue 11, November 2009, Pages 1443-1447

  • On the interesting optical transitions observed in polyaniline films in the conducting and insulating states",Amrithesh.M, S.Jayalekshmi, Chandni.K.P, Febin Kurian, S.J.Varma, Optoelectronics and Advanced Materials - Rapid Communications Vol. 3, No. 2, February 2009, p. 149 - 154


  • CarbonNanotube - Polymer Nanocomposites for Possible Pressure Sensor   Applications,  Sreekanth.J.Varma, S.Jayalekshmi, Proc. of SPIE Vol. 7037, 703716, (2008)

  • P-AgCoO2/n-ZnO heterojunction diode grown by rf magnetron sputtering,K. A. Vanaja, Umananda M. Bhatta, R. S. Ajimsha, S. Jayalekshmi and M. K. Jayaraj,  Bulletin of Material Science,Vol 31, Number 5, October 2008.

  • Polyaniline doped with orthophosphoric acid - A material with prospects for optoelectronic applications , M. Amrithesh, S. Aravind, S. Jayalekshmi, and R.S. Jayasree, Journal of Alloys and Compounds, Volume 458, Issues 1-2, 30 June 2008, Pages 532-535

  • Enhanced luminescence observed in polyaniline - polymethylmethacrylate composites,  M. Amrithesh, S. Aravind, S. Jayalekshmi, R.S. Jayasree ,J.Alloys Compounds, 449(1)(2008), 176-179.;

  • Growth and characterization of glycinium oxalate crystals for nonlinear optical applications,Arun.K.J, S.Jayalekshmi, J. Optoelectron. Adv. Mater (RC), Vol.2, No.11, p701-706, (2008).

  • Studies on the microstructure and micro hardness of   L-alaninium oxalate single crystals for optical devices,Arun.K.J, S.Jayalekshmi, J. Optoelectron. Adv .Mater   (RC), Vol.2, No.12, p802-805, (2008).

  • Studies on the vibrational spectra of the nonlinear optical crystal L-alaninium oxalate,   Arun.K.J, S.Jayalekshmi ,American Institute of Physics (AIP) Conf .Proc. 1075, 115-117,(2008)

  • Evidence of Jahn- Teller Distortion in LixMn2O4 by Thermal Diffusivity    Measurements, K. Raveendranath, Rajive M. Tomy, S. Jayalekshmi, R. V. Mangalaraja, J. Ravi and S.Thomas Lee,  Appl. Phy. A, 90 (3), 437 (2008)


  • Evidence of band structure modification of  LiMn2O4 upon lithium deintercalation  by photo acoustic spectroscopy,  S. Thomas Lee, K. Raveendranath, Rajive M.Tomy, Paulraj, S. Jayalekshmi and J. Ravi,  Applied Physics Letters 90, 1 (2007)

  • Evidence of band structure modification due to Jahn-Teller distortion in LixMn2O4 by photoacoustic spectroscopy, S.Thomas Lee, K.Raveendranath, Rajive.M.Tomy, Nibu. A.George, S.Jayalekshmi and JyotsnaRavi,    J.Phys.D:Appl.Phys.40(2007)1-4

  • Effect of Lithium concentration on the Thermal and optical properties of LixMn2O4 Investigated using Photoacoustic Technique, S.Thomas Lee, K.Raveendranath, Rajive M Tomy, Paulraj, S.Jayalekshmi and J.Ravi, Physical Review. B 76, 115112- (2007)