List of Research publications
97. High pyroelectric performance and its dependence on the field-induced orientation in antiferroelectric PLZST system, A.Anil, Rajeev Ranjan and Viswanathan Kumar J.Amer.Ceram.Soc. doi:10.1111/jace.19713)
96.Improved piezoelectric properties through manganese-doping in phase coexistence region in lead strontium zirconate titanate (PSZT) thin films, V. Priyadarsini, Athul Pradeep, P. J. Jumana, Isaku Kanno, and V. Kumar, J. Appl. Phys. 133, 164102 (2023)
95. New insights into suppression of intermediate incommensurate phase in lead zirconate stannate titanate antiferroelectric system, , Anil Adukkadan, Sujoy Saha, Niranjan Lalla, Rajeev Ranjan and Kumar Viswanathan, J. Mat.Sci. 58,8878-88(2023)
94. Transparent PZT thin films on indium tin oxide-coated glass, A.Pradeep, V. Priyadarsini, V. Kumar*T.Nishikado, Y Kanayama, I. Kanno, Bull . Mater. Sci.,46,197(2023)
93. Influence of defect chemistry on NO2 gas sensing of Li-ZnO thin films, K K Jasmi, T Anto Johny, V S Siril, V Kumar & K N Madhusoodanan, Bull. Mater. Sci. 45, 203 (2022)
92. New insights into stabilization of tetragonal phase in donor-acceptor co-doped BaTiO3, J.P. Jumana, A.Anil and V.Kumar,
Appl.Phys.A128,837(2022)
91. Transverse piezoelectric properties of preferentially {110}-oriented (Pb1-xSrx)(Zr0.80Ti0.20)O3 thin films, V.Priyadarsini,Athul Pradeep, A.Choudhary, V.Kumar, Takumi Nishikado, Kouta Onishi and Isaku Kanno, Integr. Ferroelectrics 230,163-170(2022)
90. Energy storage characteristics of novel antiferroelectric compositions, A.Chowdhary,V.Priyadarsini, Varna.V.Nair, Athul Pradeep, J.P.Jumana and V.Kumar J. Alloys Compd.,899,163395(2022)
89. Engineering Nanocrystalline Titania thin films for high photocatalytic activity , K.Vijila, K.V.Baiju and V.Kumar, Materials Today Proceedings,9,621(2019)
88. Role of Defect Structures in Stabilization of Ferroelectric Phase in Tin-Substituted Lead Zirconate Titanate, A.Anil, K.Vani and V.Kumar, J.Amer.Ceram.Soc, 101,3377-3382(2018)
87. Transverse Piezoelectric properties of {110}-oriented PLZT thin films, S.Laxmi Priya, V.Kumar, Takuya Teramoto and Isaku Kanno Integr. Ferroelectrics, 192(1),113-120(2018)
86. Enhanced electrostrain in Copper-doped Barium Strontium Titanate, K.Vani, A.Anil and V.Kumar, Ferroelectrics 550,136-140(2019)
85. Influence of Zr/Sn ratio on the Transverse Piezoelectric Coefficient e(31,f) in Lanthanum doped Lead Zirconate Titanate Stannate Thin Films, S.Laxmi priya, V. Kumar and Isaku Kanno Integr. Ferroelectrics 201,86(2019)
84. Manganese doped BaTiO3 nanotube arrays for enhanced visible-light photocatalytic applications, N.Manoj and V.Kumar, Mat.Chem.Phys,213,400-405(2018)
83. Stability studies of CdS sensitized TiO2 nanotubes prepared using the SILAR method, K.Vijila, K.Baiju Vijayan and V.Kumar, J.Environ.Chem.Engg, 6,1404-1413(2018)
82. Influence of A-site Sr2+ substitution on structure, dielectric and ferroelectric characteristics of 0.66[Pb(In0.50Nb0.50)O3]-0.34[PbTiO3], A.S.Divya, P.Juairiya, A. Anil, K.Vani and V.Kumar, Ceram.Intl,43,825-829(2017)
81. Influence of defects on the photocatalytic activity of Niobium-doped ZnO nanoparticles,M.K. Satheesan and V.Kumar, J.Mater.Sci:Mater.Electron,28, 4719-4724(2017)
80. SnO2-loaded BaTiO3 nanotube arrays: fabrication and visible-light photocatalytic application, N.Manoj, A.B.Shalet and V.Kumar,J.Mater.Sci: Mater.Electron, 28,9770-9776(2017)
79. Room temperature ferromagnetism and red shift of band gap in Mn2+,Mg2+- codoped ZnO nanoparticles, M.K.Satheesan and V.Kumar, J.Mater.Sci. Mater.Electron, 27,17601-17605(2017)
78. Acceptor-defect mediated room temperature ferromagnetism in (Mn2+,Nb5+) co-doped ZnO nanoparticles, M.K. Satheesan, K.Vani and V.Kumar, Ceram .Intl,43, 8098-8102(2017))
77. Local structural rearrangements and evolution of Relaxor state in the complex perovskite (Ba1-xPbx)(In0.50Nb0.50)O3, A.Anil and V.Kumar, J.Amer.Ceram. Soc, 99, 3980--3984(2016)
76. Influence of defect structure on Ferroelectric aging in donor-acceptor hybrid doped PZT, A.Anil and V.Kumar, Appl. Phys. A,122,581(2016)
75. Heteroepitaxial growth of phase-pure Lead indium niobate, A.S.Divya and V. Kumar, Ceram.Intl,42,12385(2016)
74. Composition dependence of Transverse Piezoelectric properties of preferentially {110}-oriented (1-x) PIN-x PT thin films, S. Laxmipriya, V. Kumar, Shogo Nishio and Isaku Kanno, J. Alloys Compd,688,863-867(2016)
73. Improved transverse piezoelectric properties in {110}-oriented B-site acceptor doped PLZT(8/65/35) thin films, S. Laxmipriya, V. Kumar, Shogo Nishio and Isaku Kanno, Integr.Ferroelectrics,176,210-219(2016)
72. Pd loaded TiO2 nanotubes for the effective catalytic reduction of p-nitrophenol, C.M.Divya, K.Vijila, Wilfried Wunderlich, Suresh Pillai, Steven Hinder and V.Kumar, Cat.Lett,146,474-82(2016)
71. Titania Nanotube Arrays surface- modified with ZnO for enhanced photocatalytic applications, N.Manoj, K.Vijila, K.V.Baiju and V.Kumar, Mat.Res.Bull,77,35-40(2016)
70. Influence of lithium doping on the correlated ferromagnetic ordering and red shift of band gap in weakly Mn.-doped ZnO nanoparticles, M.K. Satheesan and V.Kumar, J.Mater.Sci:Mater.Electron,27,6522(2016)
69. Stability studies of PbS sensitised TiO2 nanotube arrays for visible light photocatalytic applications by X-ray Photo electron spectroscopy, N. B. Rahna, K. Vijila, N. Manoj, S.C.Pillai, S.J.Hinder, V.Kumar, K.V.Baiju, Mat. Sci. Semicond.Process,42(3), 303-310(2016)
68. Influence of Fe3+ substitution on the dielectric and ferroelectric characteristics of Lead Indium Niobate, A.S. Divya and V.Kumar, J.Alloys Compd, 637,426-430(2015)
67. Evolution of Dielectric and Ferroelectric Relaxor States in Al3+-doped BaTiO3, K. Vani and V.Kumar, AIP Advances,5,027135(2015)
66. Transverse piezoelectric properties of {100}-oriented PLZT[x/65/35] thin films, S.Laxmipriya, V.Kumar, Fumiya Kurokawa and Isaku Kanno, Mat.Chem.and Phys,151,308(2015)
65. Influence of Lithium doping on orange emission in Mn.-doped ZnO, T.Anto Johny, and V.Kumar, J.Mat.Sci.: Mat. Elec,25,1456(2014)
64. Non linear optical absorption in lithium doped ZnO thin films, T. Anto Johny , V.Kumar, P.Sudheesh and K.Chandrasekharan, Opt.Commun,309,279(2013)
63. Facile Aqueous Synthesis of ZnO Nanorods and it’s Photocatalytic studies, N.Manoj, P.M. Aparna, K.Vijila, K.V.Baiju and V.Kumar, Proceedings of Indo-US Workshop on Nanomaterials(IUSWNM), C-MET, Thrissur, India 2013
62. Titania films with Anatase-Rutile interface by simple sol-gel method for enhanced Photocatalytic Application, K.Vijila, K.V.Baiju and V.Kumar, Proceedings of Indo-US Workshop on Nanomaterials(IUSWNM), C-MET, Thrissur, India 2013
61. Influence of defect mobility on electrostrain in (Ba0.80Sr0.20)TiO3, K.Vani and V.Kumar, AIP Advances,2,042177(2012)
60. Mg-doped ZnO Nanoparticles for efficient sunlight driven photocatalysis, Vinodkumar Etacheri, Roshith Roshan, and Viswanathan Kumar, ACS Appl. Mater. Interfaces,4(5),2717-25(2012)
59. Deposition of PZT thin films with {001}, {110}, and {111} crystallographic orientations and their transverse piezoelectric characteristics, D Ambika V Kumar, K Tomioka and Isaku Kanno, Adv.Mater.Lett.3(2),102-106(2012)
58. Influence of Lithium doping on the structural and electrical characteristics of ZnO Thin Films, Anto Johny T, V.Kumar, Hideyuki Imai and Isaku Kanno, Thin Solid Films,520,5797(2012)
57. PZT Thin Film: Influence of Film Texture For Microactuator Applications.,D Ambika, V Kumar, K Tomioka and Isaku Kanno, Proceedings of 1st International Symposium on Physics and Technology of Sensors (ISPTS),C-MET,Pune, Mar.2012
56. Tunability of third order nonlinear absorption in PLZT thin films, D.Ambika, V.Kumar, C.S. Suchand Sandeep and R.Philip, Appl. Phys, Lett,98,011903( 2011)
55. Influence of Strontium Substitution on Ferroelectric–Relaxor Transition in PLZT (7/60/40)V.Priyadarsini, P.V. Salija, A.S. Divya V.Kumar, J. Am. Ceram. Soc,93 [11],3584–3586(2010))
54. Chemical solution deposition and nonlinear dielectric characteristics of (Pb0.5Sr0.5)TiO3 thin films, D.Ambika and V.Kumar, J.Phys.D: Appl.Phys,43, 065401(2010)
53. Influence of low trivalent iron doping on the electrical characteristics of PZT K.P.Rema, Vinod K. Etacheri,V.Kumar, J.Mat.Sci.: Mat. Elec,21(11),1149-1153 (2010)
52. Sol-gel deposition and Piezoelectric properties of {110}-oriented PZT thin films, D. Ambika, V.Kumar, Hideyuki Imai and Isaku Kanno, Appl. Phys. Lett,96, 031909(2010)
51. FERROELECTRIC GLASS-CERAMICS: V.Kumar, Proceedings of International Workshop and Symposium on Synthesis and Characterization of Glass /Glass Ceramics (IWSSCGGC-2010) ,C-MET,Pune, 7-10 July, 2010
50. A Novel mechanism for Relaxor to ferroelectric transition in PLZT[8/65/35], A.S. Divya and V.Kumar, J.Am.Ceram.Soc,92(9),2029-32(2009)
49. Non-linear optical properties of (Pb1-xSrx)TiO3 thin films, D. Ambika, V.Kumar, C.S. Suchand Sandeep and Reji Philip, Appl. Phys. B, 97,661-664(2009)
48. Fabrication and Tunable Dielectric Properties of (Ba0.70Sr0.30)TiO3- Glass Based Thick Film Capacitors, P.V. Divya, D. Ambika, Dhanya Krishnan, K. Sivanandan and V.Kumar, Int. J. Appl. Ceram. Technol,6,231-235(2009)
47. Synthesis and piezoelectric properties of PZT-based glass ceramics, K.P. Rema and V.Kumar, J.Mat.Sci.: Mat. Elec.,20,380-385(2009)
46. Influence of low lanthanum doping on the electrical characteristics of PZT(53/47), K.P. Rema, A.S. Divya and V.Kumar, J.Phys.D: Appl.Phys,42,075420-‘25(2009)
45. Degree of acceptor nature of Fe,Mn dopants in PZT, K.P. Rema, Vinod K., and V.Kumar ,Proceedings of International Conference on Advanced Functional Materials, NIIST,Trivandrum, Dec. 2009
44. Effect of annealing on the spectral and non-linear optical characteristics of thin films of nano-ZnO, Litty Irimpan, D.Ambika, V.Kumar, V.P.N. Nampoori and P.Radhakrishnan, J. Appl.Phy,104,033118(2008)
43. Synthesis and Nonlinear Optical studies of Nano ZnO colloids, B.Krishnan, L.Irimpan, V.P.N. Nampoori and V.Kumar, Physica E,40,2787(2008)
42. Fabrication and Transverse Piezoelectric Characteristics of PZT Thick-film Actuators on Alumina substrates,K. Sivanandan, Asha T. Achuthan , V. Kumar, Isaku Kanno, Sens. Actuators A,148,134-137(2008)
41. Structure-property relation in Mn3+- doped PZT, K.P. Rema and V. Kumar, J.Am.Ceram.Soc,91,164-168(2008)
40. Preparation and dielectric characteristics of nanocrystalline Ba(MxTi1-x)O3 V.Kumar, I. Packiaselvam, K. Jithesh and P.V. Divya, J. Phys.D: Appl. Phys,40,2936(2007)
39. Crystallisation studies and properties of (Ba1-xSrx)TiO3 in borosilicate glass, P.V. Divya and V. Kumar, J.Am.Ceram.Soc,90,472-476(2007)
38. Crystallisation studies and dielectric properties of (Ba0.70Sr0.30)TiO3 in alumino-silicate glass, P.V. Divya and V. Kumar, J. Phys.D: Appl. Phys,40,7804-7810(2007)
37. Preparation and Optical guidance of Nanocrystalline ZnO Thin Films, T.Anto Johny, V.P.N. Nampoori,V.Kumar, Proceedings of National Conference on Smart Electroceramics, C-MET, Trissur, Mar.,2007
36. Sol-gel synthesis and non-linear optical transmission in Zn1-xMgxO thin films, C.S.Suchand Sandeep, Reji Philip, R. Satheeshkumar and V. Kumar, Appl. Phys. Lett,89,063102( 2006)
35. Chemical-solution deposition of (Ba1-xSrx) TiO3 thin films and characterization, V. Kumar, I. Packiaselvam, K. Sivanandan, M.A. Vahab and A.K. Sinha, J. Am. Ceram.Soc,89(3),1136-39(2006)
34. Sol-Gel Synthesis of PZT-Glass Nanocomposites Using a Simple System and Characterization, V. Kumar, Asha T. Achuthan, K.Sivanandan, P.V.Divya and K.P.Rema, Int. J. Appl. Ceram. Technol,3,345-352(2006)
33. Novel synthesis of nanocrystalline BST, I. PackiaSelvam, P.A.Ashita and V.Kumar, Ferroelectrics,324,31-35(2005)
32. Novel synthesis of nanocrystalline PZT, N. Rani Panicker, V. Kumar, Y. Ohya and Y. Takahashi, Ferroelectrics,325,49-54(2005)
31. One-step synthesis of Nanocrystalline Ba(SnxTi1-x)O3 , V.Kumar, Jorphin Joseph and I.Packia Selvam J.Ceram.Soc.Jpn,113(12),784-787(2005)
30. Stable Nano-ZnO colloid using a novel capping agent,” B. Krishnan, Litty Irimpan, V.P.N. Nampoori ,V. Kumar ,Paper presented at First National Conference on Nanoscience and Technology, NCL, Pune, March 7-8, 2005
29. Preparation and characterization of ZnO thin films,” T. Anto Johny, V.P.N. Nampoori V. Kumar , National Seminar on Modern Trends in Materials Science, Calicut University, 29-30 August, 2005
28. Chemical precipitation of Nano-PMN,” I. Packiaselvam, K.C. Bini, N. Rani Panicker and V.Kumar( Paper presented in National Seminar on Emerging Trends and New Vistas in Chemistry( EMTIC), Calicut University, Nov.29-30, 2005)
27. Crystallisation of Ba1-xSrxTiO3 from amorphous gels,” P.V. Divya, P. Bashpa and V.Kumar,( Paper presented in National Seminar on Emerging Trends and New Vistas in Chemistry( EMTIC), Calicut University, Nov.29-30, 2005
26. Nonlinear Optical Absorption in Multilayer BaTiO3 Thin Films “ Anwar Salah, V V Namboodiri, A. Deepthy, V. Kumar, V. P. N. Nampoori and P. Radhakrishnan (Photonics 2004, Seventh International Conference on Optoelectronics, Fiber Optics and Photonics, 9th to 11th December 2004, Cochin.
25. Third order nonlinear optical properties of ZnO thin films using z- scan technique,” A Deepthy, D Ambika, Sajan D George, V Kumar and V P N Nampoori (Paper presented in Photonics 2004, Seventh International Conference on Optoelectronics, Fiber Optics and Photonics, 9th to 11th December 2004, Cochin, Kerala, India.
24. Sol-gel synthesis of nanocrystalline PZT using a novel system K.Stanly Jacob, N.Rani Panicker, I. Packia Selvam and V.Kumar, J. Sol-gel Sci. and Tech,28(3) 289-295 (2003)
23. An Overview of Multilayer Ceramic actuator Program in C-MET. N.Raghu, V.Kumar, K.R.Dayas and I.C.Rao – Smart Materials, Structures, and Systems. Edited by Mohan, S.; Dattaguru, B.; Gopalakrishnan, S. Proceedings of the SPIE,5062,473-480(2003)
22. Preparation and characterization of ZnO waveguide,” T. Anto Johny, V. Kumar and V.P.N. Nampoori, Poster presented at Annual Photonics Workshop – 2003 on “ Recent trends in Light- Matter interaction” held during Feb. 27-28 , 2003 at International School of Photonics, Cochin Univ. of Sci. and Tech., Kochi.
21. Novel synthesis of nanocrystalline BST,” I. PackiaSelvam, P.A. Ashita and V.Kumar ( Paper presented at the fourth Asian meeting on Ferroelectrics held at Indian Institute of Science[IISc]., Bangalore during Dec. 12-15, 2003)
20. Formation of Zinc-Antimony based spinel phases, K.G. Vasanthakumari, P.V. Divya, V. Kumar and T. Asokan, J.Am. Ceram. Soc,85(3),703-05(2002)
19. Effect of type of solvent and dispersant on nano PZT powder dispersion for tape casting slurry, S. Bhaskar Reddy, P. Paramanand Singh, N. Raghu, V. Kumar , J. Mat. Sci,37,929-34(2002)
18. Synthesis of nanopowders of (Ba1-xSrx)TiO3, I. PackiaSelvam and V. Kumar, Mater. Lett,56(6),1089-92(2002)
17. Modes in Planar Waveguides Based on Sol-gel Derived Thin Films of Nano ZnO. K.Geetha, T.Anto Johny, V.Kumar ,C.P.G. Vallabhan, V.P.N. Nampoori and P. Radhakrishnan, Paper presented in Photonics- 2002, Sixth International Conference on Optoelectronics, Fiber Optics and Photonics held at TIFR, Mumbai, India, Dec 16-18 (2002)
16. Characterisation of Barium titanate nano-size powders,” V. Kumar and I. Packia selvam, Paper presented in National Seminar on Current Trends in Materials Science held at Mahatma Gandhi University, Kottayam during March 23-24, 2001
15. Nanosized zirconate and titanate powder for enhanced device performance” V.Kumar, K.R. Dayas and N. Raghu , Paper presented in National workshop on Piezoceramics and Devices held at Armament Research and Development Establishment, [DRDO] Pune on 15.2. 2000
14. Solution-Precipitation of fine powders of BaTiO3 and SrTiO3, V.Kumar, J. Am. Ceram Soc,82(10),2580-2584(1999)
13. Precipitation of fine powders of PbTiO3 derived from organometallic solution, K.J.Stanly, I.Packia Selvam and V.Kumar, Mater.Lett. 40,118-123 (1999)
12. Sol-Gel processing of ferroelectric PbTiO3 and Pb(Zrx Ti1-x )O3 thin-films, V.Kuma, Y.Ohya and Y.Takahashi, Jap.J.Appl.Phys,37(8),4477-`81(1998)
11. On the formation aspects of BaTiO3 and SrTiO3 from solutions,” I. Packia Selvam, K.Jayan, K.J.Stanly and V.Kumar (paper presented in Tenth National Seminar on Ferroelectrics and Dielectrics( NSFD-X) held at IIT, Madras during Dec.16-18,1998)
10. Sol-Gel processing of PbTiO3 thin-films,” V.Kumar, Y.Ohya and Y.Takahashi (paper presented in NSFD-X held at IIT Madras during Dec. 16-18,1998)
9. A simple system for the preparation of Submicrometer Lead Titanate powders by the Sol-Gel method, V. Kumar, R. Marimuthu, S.G.Patil, Y.Ohya and Y.Takahashi. J.Am.Ceram.Soc,79(10), 2775-78(1996)
8. Synthesis and structure of Bisiodobis(diisopropyldithiocarbamato) Tellurium(lV), V.Kumar, G.Aravamudan and MSeshasayee, J.Cryst.Spec. Res,21(1),65-68(1991)
7. A Centric Thiuramdisulphide. Structure of Tetraisopropyl thiuramdisulphide, V.Kumar, G.Aravamudan and M.Seshasayee, Acta Cryst,C46,674-676(1990)
6. Structure of Tetrakis(diisopropyldithiocarbamato)Tellurium(lV), V.Kumar, G Aravamudan, M.Seshasayee, P.Selvam and K.Yvon, Acta Cryst,C46,2100-2102(1990)
5. Structure of Bis(diisopropyldithiocarbamato) Tellurium(II),V Kumar, G Aravamudan, M. Seshasayee, P Selvam and K Yvon, Acta Cryst,C46,2081- 2083 ( 1990)
4. Interaction of heterocyclic thioamides with Tellurium(ll) and Tellurium(lV). Synthesis and Crystal Structures of Bis [2-(2- thioxo 1,3-thiazolidin-3-yl]-4,5-dihydro-1,3thiazolium)] hexabromotellurate(lV) and Tris(1-methyl imidazoline- 2(3H)-thione) tellurium(ll)bromide, V.Kumar, G Aravamudan and M Seshasayee, Polyhedron,9(24),2879-2885(1990)
3. Structure of chloro(Nitrilotriethanolato)Cobalt(II), Radha Akella, M.Seshasayee, V.Kumar and G.Aravamudan, Acta Cryst,C45(6),882-4(1989)
2. 2-[2-Thioxo-1, 3-thiazolidin-3-yl]-4, 5-dihydro-1, 3-thiazolium bromide. 1H-NMR, Mass Spectral, XPES studies and crystal structure determination, V.Kumar, G.Aravamudan, V.Ganesh, M.Seshasayee, D.Heijdenrijk and H.Schenk Phosphorus, Sulfur and Silicon,45(1),15-22(1989)
1. A Novel Mixed Valence Iodide bridged Te(ll)-(lV) complex featuring diisopropyl dithiocarbamate (L) and Iodide : ILTeII (1) TeIV L2I, V Ganesh, M Sehasayee, V Kumar, S.P Chidambaram, G.Aravamudan, K.Goubitz and H. Schenk, J Cryst. Spec.Res,19(4),745-753(1989)
List of Patents
1. PIEZOELECTRIC COMPOSITION, METHODS AND APPLICATIONS THEREOF
A.Anil, V.Priyadarsini, M.Sathyanarayanan and V.Kumar
US Patent No.10720565; 21.07.2020
Indian Patent - No.434051- Granted on 7.6.2023
2. NANO-ZINC OXIDE, PROCESS OF PREPARATION AND APPLICATIONS THEREOF
N.Manoj, K.V. Baiju and V.Kumar
Indian Patent - No.325691- Granted on 25.11.2019
3. A PROCESS FOR PREPARATION OF BaTIO3, V.Kumar
Indian Patent – 197127- Granted 31.7.2009
4. A PROCESS FOR PREPARATION OF STRONTIUM TITANATE POWDERS
V.Kumar, K.J.Stanly, K.Jayan, K.Sivanandan, P.K.Girija.
Indian Patent- 215393 –Granted 14.3.2008
Books published
Contributing Author in Chapter entitled “ FERROELECTRIC GLASS-CERAMICS” in the book ADVANCED SENSOR AND DETECTION MATERIALS published by JOHN WILEY& SONS, May 2014
Invited lectures
1. NEW INSIGHTS INTO STABILIZATION OF TETRAGONAL PHASE IN DONOR-ACCEPTOR CO-DOPED BaTIO3 – Invited lecture delivered at) National Seminar on Ferroelectrics & Dielectrics(NSFD-2022) organized by VIT-AP University,AP during Dec.17-19(2022)
2. PIEZOELECTRIC MICROMACHINED DEVICES FOR SENSING AND IMAGING- Invited lecture delivered at FDP on Biomedical devices organised by C-DAC,Thiruvananthapuram on 26.11.2021
3. FERROELECTRICS OR RELAXOR: A TUG OF WAR – Invited lecture delivered at the Second Symposium on Advances in Ferro & Piezoelectrics(SAFE-21)-Materials-Process-Devices jointly organized by RIC(DRDO) & IIT,Madras, on 17.9.2021
4. CHEMISTRY OF MATERIALS- Inaugural address delivered at the Refresher course on Chemical Sciences conducted jointly by UGC and Kannur University on 14.8.2020.
5. PIEZOELECTRIC VIBRATION ENERGY HARVESTERS – Invited lecture delivered at the Workshop on Condensed Matter and Materials Science organized by KSCSTE-SRIBS [Kerala state Council for Science,Technology and Engineering-Srinivasa Ramanujan Institute for Basic Sciences] and C-MET at C-MET,Thrissur on 21.9.2019.
6. NANOMATERIALS FOR DEVICE APPLICATIONS – Invited lecture delivered at the Faculty Development Programme sponsored by APJ Abdul Kalam Technological University and organized by MGM College of Engineering and Technology,Pampakuda on 13.6.2019
7. LOCAL STRUCTURAL REARRANGEMENTS IN COMPLEX PEROVSKITES – Invited lecture at the International Conference on Chemistry and Physics of Materials (ICCPM) organized by St.Thomas College,Trissur on 20.12.2018
8. DESIGN OF TRANSDUCER MATERIALS : A RAMAN PERPSPECTIVE , Invited lecture delivered at National Seminar on Advanced Materials-ADMAT 2018 organised by School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam during 23-24 March,2018.
9. ns2 LONE PAIR – AN IMPORTANT HANDLE FOR MATERIALS DESIGN: Invited lecture delivered at National Seminar on Frontiers in Chemical Sciences 2018, organised by Department of Chemistry, Calicut University, Calicut during 26-28 February,2018.
10. NLO PROPERTIES OF FERROELECTRIC THIN FILMS : Invited lecture delivered at National Seminar on Contemporary Trends in Physics, School of Physics, Kannur University, Kannur during 20-21 March,2018.
11. DESIGN OF NEW MATERIALS ; APPROACH THROUGH DEFECT CHEMISTRY: Invited lecture delivered at National Seminar on Science and technology of New Materials for Sustainable Future, organised by Department of Physics, Calicut University, Calicut during 7-9 February,2018.
12. DEFECT CHEMISTRY: A GOLDMINE FOR TAILORING MATERIALS, Plenary lecture at Seminar on Frontiers in Chemistry organized by Department of Chemistry, Calicut University, Calicut on 2.3.2017.
13. .NANOMATERIALS FOR DEVICE APPLICATIONS , Invited lecture delivered at the National Workshop on Nanomaterials and Nanocomposites held at Amrita Viswavidyapeetam, Coinbatore on 4.2.2017.
14. CHEMISTRY OF MATERIALS, Prof.K.P. Antony Memorial Lecture delivered at the National Seminar on Frontiers in Applied Chemistry, St.Thomas College,Trissur on 7.2.2017.
15. CHEMISTRY OF MATERIALS : Keynote address delivered at UGC sponsored National Seminar on Chemistry organized by Department of Chemistry, St.Joseph’s College, Irinjalakudar on 28.1.2016.
16. CHEMISTRY OF MATERIALS : Prof.V.A.Joseph Endowment lecture delivered at Dept.of Chemistry, Sacred Heart’s College, Thevara, Ernakulam on 9.2.2016.
17. CHEMISTRY OF MATERIALS : Plenary lecture at Seminar on Advances in Materials Chemistry organized by Department of Chemistry, Calicut University, Calicut on 5.12.2014
18. PIEZOELECTRIC THIN FILMS FOR MEMS APPLICATIONS : Invited lecture at Continous Education Program on Recent Trends in Underwater Transducers conducted by NPOL, Cochin on 14.10.2014.
19. NANOFERROELECTRIC-GLASS FOR ELECTRONICS APPLICATIONS, Invited lecture at Second refresher course in Nanoscience organized by UGC-Academic Staff College, Calicut University, Calicut on 17.9.2014
20. PZT THIN FILMS. INFLUENCE OF FILM TEXTURE FOR MICROACTUATOR APPLICATIONS” Invited lecture delivered at the IUMRS-ICA 2013 International Symposium held at IISc,Bangalore. during Dec.16-20, 2013.
21. FERROELECTRIC GLASS CERAMICS : Invited lecture at UGC-sponsored National Seminar on Advanced Materials organized by Department of Physics, Mahatma Gandhi University , Kottayam on Jan.19.2012.
22. NANOMATERIALS: CHARACTERISATION Invited lecture at Continuing Education Program on Science and Technology of Nanomaterials, held at NPOL, DRDO, Cochin on 21.9.2011.
23. FERROELECTRIC GLASS-CERAMICS: SYNTHESIS,CHARACTERISATION AND DEVICE APPLICATIONS Invited lecture at National Science Day organized by Department of Physics, Cochin University of Science and Technology, Cochin on March 1,2010.
24. NANOMATERIALS: IMPACT ON NANOTECHNOLOGY, Invited lecture at Short Term Training programme on NanoScience and Nanotechnology organized by Department of Chemical Engineering, Govt. Engineering College, Trissur on Jan.21, 2010.
25. NANOFERROELECTRICS Invited lecture at Workshop sponsored by UGC organized by Department of NANOMATERIALS SCIENCE AND TECHNOLOGY, Calicut University, Calicut on Aug. 26, 2009.
26. FERROELECTRIC GLASS-CERAMICS: SYNTHESIS,CHARACTERISATION AND APPLICATIONS Invited lecture at National Seminar on Advances in Physical and Theoretical Chemistry organized by Department of Chemistry, Calicut University, Calicut on March 28, 2009.
27. PIEZOELECTRIC THIN FILMS FOR MEMS Invited lecture at Workshop on Advanced Materials sponsored by UGC organized by Department of Physics, Calicut University, Calicut on March 26, 2009.
28. NANOMATERIALS FOR ELECTRONICS APPLICATIONS Invited lecture at National Seminar on Nanotechnology organized by School of Chemical Sciences, Kannur University, Kannur on December 14, 2007.
29. RECENT TRENDS IN MEMS AND NANOTECHNOLOGY Invited lecture at Continuing Education Program held at NPOL, DRDO, Cochin on 5.11.2008.
30. MATERIALS FOR ACTUATOR APPLICATIONS Invited lecture at Workshop on Advanced Materials sponsored by UGC organized by Department of Physics, Calicut University, Calicut on December 6, 2007.
31.NANOMATERIALS FOR ELECTRONICS APPLICATIONS : Invited lecture at National Seminar on Nanotechnology : The Technology of the Future organized by Dept. of Mechanical Engineering, Govt. Engineering College, Trivandrum on March 28, 2007 at Kanakakkunnu Palace, Trivandrum.
32.NANOCRYSTALLINE MATERIALS : Synthesis and Applications, Invited lecture delivered at National Seminar on Emerging Trends and New Vistas in Chemistry,( EMTIC),Calicut University, Nov.29-30, 2005.