Dr. B. Karthikeyan


Received  Ph.D degree from Pondicherry University and pursued postdoctoral fellowship in Raman Research Institute, Bangalore and Indian Institute of Science, Bangalore. My research interest is to study the Optical (steady state and Ultrafast) and Nonlinear Optical properties of materials like Glasss, polymers & Nanomaterials,  (Metallic clusters, semiconductors, carbon nanostructures). 

We also do corrosion and corrosion inhibition studies on Aerospace and Marine  materials through physical, NDT methods.

To visit my Research Lab Homepage

Employment Profile

Job Title Employer    
Post doctoral fellow Raman Research Institute, Bangalore    
Post doctoral fellow Indian Institute of Science, Bangalore    
Professor  National Institute of Technology -Trichirappalli    

Academic Qualifications (From Highest Degree to High School):

Examination Board / University      
PhD Pondicherry University      
MSc Pondicherry University      
BSc University of Madras      

Awards, Associateships etc.

Year of Award Name of the Award Awarding Organization
2009 Young Scientist Fellowship Department of Science and Technology (DST)
2007 Japan Society for the promotion of Science (JSPS) Ministry of Education, Culture, Sports, Science and Technology, Japan
2017 Best Performer Award -NIT Trichy NIT Trichy
2018 Best Performer Award- NIT Trichy NIT Trichy
2021 Best Performer Award -NIT Trichy NIT Trichy
2021 Ranked as World's Top 2% scientist -Survey done by Standford Uniiversity https://elsevier.digitalcommonsdata.com/datasets/btchxktzyw/3
2022 Ranked as World's Top 2% scientist -Survey done by Standford University https://elsevier.digitalcommonsdata.com/datasets/btchxktzyw/4
2023 Ranked as World's Top 2% scientist -Survey done by Standford University https://elsevier.digitalcommonsdata.com/datasets/btchxktzyw/6

Details of Academic Work

  • Curriculum Development- Photonics and LAser Applications
  • Courses taught at Postgraduate and Undergraduate levels
    1. Atomic and molecular spectroscopy
    2. Lasers and applications
    3. Radiography
    4. Material chrecterisation techniques
    5. Advanced lab-MSc
    6. Engineering Physics

Projects guided at Postgraduate level- M. Tech Students - 35(with external students 37)

M.Sc Students - 35(with external students40)

Details of Major R&D Projects

Title of Project Funding Agency Duration Status
From To Ongoing/ Completed
Synthesis and exciton dynamics study on semiconductor quantum dot nanocomposite polymers DST- FAST Track     Completed
Optical power limiting studies on ag and cu nano wire composite glasses Defense Research and Development Organisation     Completed
Synthesis, exciton and phonon properties of nio nanotube composite polymer films Council of Scientific and Industrial Research     Completed
Multiple Exciton Harvesting at Zero-Dimensional/Two-Dimensional (ZnO/MoS₂)–Polymer Heterostructures DST, (SERB)     Completed

Number of PhDs guided

Name of the PhD Scholar Title of PhD Thesis Role(Supervisor/ Co-Supervisor) Year of Award
Dr. T. Pandiyarajan Doping and polymer covering induced optical, vibrational properties of zno nanostructures Supervisor 2013
Dr. R. Udhayabaskar Optical and nonlinear optical properties of some metal and metal oxide nanostructures Supervisor 2014
Dr. S. Muthumariappan Metal/metal oxide decorated reduced graphene oxide for ammonia vapour sensing applications Supervisor 2017
Dr. S. Hariharan Nanomaterials based fluorescence sensing, excited state energy Transfer and photonic logic gates Supervisor 2019
Dr. Neena Prasad Optical and Raman spectral probe on different polar zns nanostructures for uv photodetector applications Supervisor 2019
Dr. R. Venkadesh Kumar Investigation on optical, nonlinear optical and photocatalytic Properties of reduced graphene oxide/XO3 (X=W, Mo) nanocomposites Supervisor 2021
Dr. Anoop Sunny Raman spectral probe on laser power, particle size and magneticorder induced phonon and magnon properties of NiO nanoparticles Supervisor 2021

Participation in Workshops/ Symposia/ Conferences/ Colloquia /Seminars/ Schools etc. (mentioning the role)

Date (s) Title of Activity Level of Event (International/ National/ Local) Role (Participant/ Speaker/ Chairperson, Paper presenter, Any other) Event Organized by Venue
12-07-2008 Induction Training program National Participant   Indian Institute of Technical Teachers Training & Research, Chennai
14 to 24 June 2011 Thermodynamics in mechanical engineering National Participant ISTE IIT Bombay
IIT-Bombay FDP on advanced nanomaterials:Process, Characterization and Applications National Participant   NIT-Calicut

Workshops/ Symposia/ Conferences/ Colloquia/Seminars Organized (as Chairman/ Organizing Secretary/ Convenor / Co-Convenor)

Title of Activity Level of Event (International/ National/ Local) Date (s) Role Venue
ISNT National Conference on NDE for Research Scholars and Students-IGNIT 2019 National 25-26 September 2019 Co-ordinator NIT Trichy
Training program on optical spectroscopy of semiconductor nanomaterials Local 08 March 2022 Convenor NIT Trichy

Invited Talks delivered

Topic Date Inviting Organization
Optical nonlinearity and excited electron dynamics in noble metal nanoparticles 2006 Raman Research Institute, Bangalore
Light and metallic nanoparticles 25-28 February 2009 PRIST University
Light and nanomaterials 23rd Aug. 2010 St. Josephs College of Arts and Science, Cuddalore
Material science and its applications 2020 Meenakshi college of arts and Science Pudukkottai
Novel materials 2020 Government college of engineering Thanjavur
Lasers and nano-optics 2020 NITT-OSA & NITT- SPIE student chaptERS
Nondestructive materials testing methods 2021 M R Government Arts College -Mannargudi
Emerging trends in photonics 2021 IIIT DM Kurnool
Emerging trends in materials 2021 University of Kerala

Membership of Learned Societies

Type of Membership (Ordinary Member/ Honorary Member / Life Member ) Organization Membership No. with date
Life member Indian Society for Non-destructive Testing  

Academic Foreign Visits

Country Duration of Visit Programme
Singapore 10 days International Conference and Visit to NTU and NUS, Singapore
United States of America 10 days
  International Conference
Malaysia 10 days
  International Conference


Refereed Research Journals:

Author(s) Title of paper Journal volume Page no Year Impact factor
Anoop Sunny, Karthikeyan Balasubramanian Phonon, magnon and magnetic properties of Cu doped NiO nanoparticles Journal of Raman Spectroscopy     2022 2.727
Sivalingam Muthu Mariappan, Sung Jun Hong, Byungchan Han, Mohd. Shkir, Elangovan Vinoth, Stella Mary, Janani Archana,Balasubramanian Karthikeyan, H. Algarni, and S. AlFaify slow Excitonic Carrier Cooling in Sr-doped PbS Nanocrystals for Hot Carrier Devices: Integrated Experimental and First-principles Approach Journal of Materials Chemistry C 10 6634-6645 2022 8.067
Janani Archana K, Christy preetha, Karthikeyan Balasubramanian Influence of Urbach energy in enhanced photocatalytic activity of Cu doped ZnO nanoparticles Optical Materials 127 112245 2022 3.754
Janani Archana K, Karthikeyan Balasubramanian Probing nanometal surface energy transfer between nanocopper and MoS2 for glutathione sensing Journal of Physics D: Applied Physics 55 265101 2022 3.409
Arjun K, Balasubramanian, Karthikeyan Flexible Ultraviolet Photodetector based on flower-like ZnO/PEDOT:PSS nanocomposites Applied Physics A 128 449 2022 2.98
Swati; Balasubramanian, Karthikeyan "Multiple Exciton Dynamics in MoS2 Nanosheet/Poly(Methyl Methacrylate)/Polyaniline Composites and Nonlinear Optical Properties: Implications for Saturable Absorber Applications" ACS Applied Nano Materials 5 4823–4832 2022 6.140
Susmitha Balagopalan , I. Abdul Rasheed Hemant Sharma, Inder Mohan Chhabra, Mahender Kumar Gupta, P. Manimaran, B. Karthikeyan Fractal and Multifractal analysis on Fused Silica Glass formed by Bound abrasive grain mediated grinding using diamond grits Journal of Non-Crystalline Solids 581 121418 2022 4.458
Ramar, Venkadeshkumar; Balasubramanian, Karthikeyan Reduced Graphene Oxide/WO3 Nanorod Composites for Photocatalytic Degradation of Methylene Blue under Sunlight irradiation ACS applied nanomaterials 4 5512–5521 2021 6.140
Sivalingam Muthu Mariappan, E. Mathan Kumar, Udo Schwingenschlögl,ThangeeswariTharmar, Elangovan Vinoth, Mohd.Shkir5, Zafar Said, Balasubramanian Karthikeyan Impact of Reducing Agents on the Ammonia Sensing Performance of Silver Decorated Reduced Graphene Oxide: Experiment and First Principles Calculations Applied Surface Science 558 149886 2021 6.707
Karthikeyan Balasubramanian Raman spectral probed electron-phonon and phonon lifetime properties of Ni-doped CuO nanoparticles Applied Physics A 127 205 2021 2.584
Anoop Sunny,Karthikeyan Balasubramanian Laser induced phonon and magnon properties of NiO Nanoparticles: A Raman study Journal of Raman Spectroscopy 52 833-842 2021 3.133
Ramar, Venkadeshkumar; Karthikeyan Balasubramanian Effect of reduced graphene oxide on the sun light-driven photocatalytic activity of rGO/h-MoO3 nanocomposites Journal of Physics D:Applied Physics 54 155502 2021 3.207
Madhumidha,B.Karthikeyan Enhanced UV photodetection behavior of Cr doped wurtzite ZnO crystalline nanorods Optical Materials 110 110492 2020 3.08
Anoop Sunny, Karthikeyan Balasubramanian Plasmon induced enhancement of surface phonon and magnon properties of NiO nanoparticles: Raman spectral probe Physical Chemistry Chemical Physics 22 22815-22822 2020 3.676
S, Aravindh; B, Karthikeyan Graphene oxide - Polymethyl methacrylate coatings for Corrosion protection of aerospace aluminium alloy 7075 – T651 surfaces Engineering Research Express 2 035034 2020 1.1
Swatipaul, B.Karthikeyan Charge transfer induced excitons and nonlinear optical properties of ZnO/PEDOT:PSS nanocomposite films Spectrochimica Acta Part A : Molecular and Biomolecular Spectroscopy 245 118901 2020 4.831
M.Manjula, B. Karthikeyan, D.Sastikumar Cu-doped zinc oxide fiber optic sensor for acetone detection at room temperature Applied Physics A 126 718 2020 2.584
Jananni Archana K, B.Karthikeyan Thermally Influenced, Optical and fluorescence properties of Zinc Oxide nanoparticles for Glutathione sensing Applied Physics A 126 602 2020 2.584
Venkadeshkumar Ramar,Karthikeyan Balasubramanian Unravelling the synergistic effect of reduced graphene oxide on optical, phonon and optical power limiting properties of rGO/α-MoO3 nanohybrids Applied Physics A 126 565 2020 2.584
A.Kalaipriya, Anoop Sunny, B, Karthikeyan, D.Sastikumar Optical, Spectroscopic and Fiber Optic Gas Sensing of Potassium Doped
α -Fe2O3 Nanostructures
Optical Fiber Technology 58 102304 2020 2.53
Sunny, Anoop; Balasubramanian, Karthikeyan Raman Spectral Probe on Size Dependent Surface Optical Phonon Modes and Mangnon Properties of NiO Nanoparticle The Journal of Physical Chemistry C 124 12636−12644 2020 4.126
Venkadeshkumar Ramar,Karthikeyan Balasubramanian Strong violet emission and optical power limiting properties of rGO/MoO3synergistic composites Journal of Applied Physics 127 193102 2020 2.877
Anoop Sunny,T. Arun, B. Karthikeyan Laser induced fano scattering, electron- phonon coupling, bond length and phonon life time of α-Fe2O3 nanostructure Physical Chemistry Chemical Physics 22 2001-2009 2020 3.676
Karthikeyan Balasubramanian Optical, Phonon and Fluorescence properties of PVA-GO-ZnO free standing films Applied Physics A 125 847 2019 2.584
Venkadeshkumar Ramar,Karthikeyan Balasubramanian Optical and Highly Enhanced Solar Light-driven Photocatalytic Activity of Reduced Graphene Oxide Wrapped α-MoO3 Nanoplates Solar Energy 194 1--10 2019 5.742


Effect of Laser power on force constant and phonon lifetime of stretching and bending vibration of Cu-doped WO3 nanostructures Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy


225 117514 2019 4.831
Prasad, Neena; Karthikeyan, Balasubramanian


Phase dependent structural, optical, phonon and UV sensing properties of ZnS nanoparticles Nanotechnology 30 485702 2019 3.874
S. Hariharan ,B.Karthikeyan Fluorescence ON-OFF Switching, Boolean logic gates like behavior of Carbon Quantum Dots and highly sensitive bovine serum albumin sensing Journal of Applied Physics 126 084503 2019 2.877
S.Nandhini,S.Muniyappan, VenkadeshkumarRamar, Karthikeyan Balasubramanian, P.Murugakoothan Quantum chemical analysis on supramolecular assemblies of guanidinium tetrafluoroborate (GFB) crystal structure: Emission and NLO behaviour Journal of Molecular Structure 1198 126859 2019 3.196
Unraveling the synergistic influences of graphene and CuO on the structural, photon and phonon properties of graphene:CuO nanocomposites Carbon 152 766-776 2019 9.594
Jit Sarkar, Shankar G Menon, Neena Prasad,B. Kathikeyan,N. Kamaraju Ultrafast Carrier Dynamics of Undoped and Ho3+ Doped α-Bismuth Oxide Micro-Rods J. Phys. Chem. C 123 10007−10012 2019 4.126
R.Udayabhaskar.V.Mangalaraja, .... B.Karthikeyan, DavidContreras, M.A.Gracia-Pinilla Modulation of Optical and Photocatalytic Properties by Morphology and Microstrain in Hierarchical Ceria Nanostructures Solar Energy Materials and Solar Cells 195 106-113   7.267
B. Karthikeyan, S. Hariharan, Arya Sasidharan, V. Gayathri, T. Arun, Ali Akbari-Fakhrabadi, C. Madhumitha Optical, vibrational and fluorescence recombination pathway properties of nano SiO2-PVA composite films Optical materials 90 139-144 2019 3.08
Prasad, Neena; Karthikeyan, Balasubramanian Raman Spectral Probe on Polar w-ZnS Nanostructures and Surface Optical Phonon Modes in Nanowires Nanoscale 11 4948-4958 2019 7.79
Prasad, Neena; Karthikeyan, Balasubramanian Tunable bandgap and blue emission of ZnS nanoparticles induced by controlled S vacancies Journal of Applied Physics 125 085702 2019 2.877
Prasad, Neena; Karthikeyan, Balasubramanian Tunable bandgap and blue emission of ZnS nanoparticles induced by controlled S vacancies Journal of Applied Physics 125 085702 2019 2.877
S. Hariharan , B.Karthikeyan Design of "Turn-ON and Turn-OFF" Fluorescence Switching based Photonic Logic Gates through Multiple Input-Output Models by MoS2 Quantum Dots Journal of Colloid and Interface Science 540 258-264 2019 8.128
Jit Sarkar, Shankar G Menon, C. Madhumitha, B. Kathikeyan, N. Kamaraju Ultrafast electron hole plasma dynamics in chemically pristine and Ag-doped ZnO nanorods Journal of Applied Physics 124 243103 2018 2.877
Venkadeshkumar Ramar, Karthikeyan Balasubramanian Charge transfer induced tunable bandgap and enhanced saturable absorption behavior in rGO/WO3 composites Applied Physics A 124 779 2018 2.584
Anoop Sunny, Neena Prasad, Devendiran Subbaiyan, Sastikumar Dillibabu,
Balasubramanian Karthikeyan
Optical, phonon and fiber optic gas sensing properties of Hematite microparticles Applied Physics A 124 10 2018 2.584
Karthikeyan Balasubramanian Tuneable fluorescent, recombination pathways of biogenic Au - SiO2 nanospheres from rice husk: An Optical study Optical Materials 88 223-228 2018 3.08
R.Udayabhaskar R.V.Mangalarajaa, S.F. Sahlevani V.T.Perarasu , B.Karthikeyan , D. Contrerase, M.A.G. Pinillag Graphene induced band gap widening and luminescence quenching in ceria:graphene nanocomposites Journal of Alloys and Compounds 770 1221-1228 2018 5.316
Prasad, Neena; Karthikeyan, Balasubramanian Resonant and Off-Resonant Phonon Properties of Wurtzite ZnS: Effect of Morphology on Fröhlich Coupling and Phonon Lifetime" J. Phys. Chem. C 122 31 18117-18123 2018 4.126
Neena Prasad, Balasubramanian Karthikeyan Effect of morphology on optical and efficiently enhanced electrical properties of W-ZnS for UV sensor Applications Journal of Applied Physics 124 045702 2018 2.877
M. Manjula, B. Karthikeyan, D. Sastikumar Sensing characteristics of clad-modified (Ho-doped Bi2O3 nanoparticles) fibre optic gas sensor ptical Fiber Technology 45 35-39 2018 2.53
B. Karthikeyan, S. Hariharan, R.V. Mangalaraja, T. Pandiyarajan, R. Udayabhaskar, P. Sreekanth Optical and optical limiting studies on NiO-PVA composite films for opto-electronics IEEE Photonic Technology Letters 30 1539 - 1542 2018 2.486
Venkadeshkumar Ramar; shaheer Moothattu; Karthikeyan Balasubramanian Metal free, sunlight and white light based photocatalysis using Carbon quantum dots from Citrus grandis: A green way to remove pollution. Solar Energy 169 120-127 2018 5.742
Neena Prasad, Balasubramanian Karthikeyan Broad band and enhanced photocatalytic behaviour of Ho3+ doped Bi2O3 micro-rods Applied Physics A: Materials Science & Processing 124 421 2018 2.584
C. Madhumidha, B.Karthikeyan Dopant induced Local Vibrational Modes and Fano scattering in Ag doped ZnO microrods Spectrochimica Acta Part A: Molecular and Biomolecular Spect 199 322-327 2018 4.098
S. Hariharan , B.Karthikeyan Fӧrster resonance energy transfer between MoS2 quantum dots and polyaniline for turn-on bovine serum albumin sensing Sensors & Actuators: B. Chemica 264 337-343 2018 8.417
B.Karthikeyan, S. Hariharan Highly sensitive sensing of glutathione based on Förster resonance energy transfer between MoS2 donors and Rhodamine 6G acceptors and its insight Sensors & Actuators: B. Chemical 259 980-989 2018 8.417
S. Hariharan, B.Karthikeyan Environment dependent enhanced photoluminescence and Boolean logic gates like behavior of Bi2O3 and Ag:Bi2O3 nanostructures. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 193 344-348 2018 4.831
Balasubramanian Karthikeyan Optical, phonon properties of ZnO-PVA, ZnO-GO-PVA nanocomposite free standing polymer films for UV sensing Journal of Materials Science: Materials in Electronics 29 365–373 2017 2.478
R. Udayabhaskar; Mangalaraja, R. V.; T. Pandiyarajan; B. Karthikeyan, M. Héctor D Spectroscopic investigation on graphene-copper nanocomposites with strong UV emission and high catalytic activity Carbon 124 256-262 2017 9.594
R. Udayabhaskar; Mangalaraja, R. V.; T. Pandiyarajan; B. Karthikeyan, M. Héctor D. High catalytic activity of monometallic Ag, Cu nanostructures in degradation of Acid Blue 113 dye: an electron relay effect Mater. Res. Express 4 095002 2017 1.941
Swaminathan Hariharan; Ramar Venkadeshkumar; Karthikeyan Balasubramanian Excited State Electron, Energy Transfer Dynamics between 2D MoS2 and GO/RGO for Turn ON BSA/HSA Sensing J. Phys. Chem. C 121 12585-12592 2017 4.126
T. Pandiyarajan, R V Mangalaraja, B. Karthikeyan Héctor D. Mansilla M. A. Gracia-Pinilla Spectroscopic Investigation on rGO:ZnO Composites Nanostructures Recent Trends in Materials Science and Applications 189 63-69 2017 -
M. Manjula, B. Karthikeyan, D. Sastikumar Sensing characteristics of nanocrystalline bismuth oxide clad-modified fiber optic gas sensor Optics and Lasers in Engineering 95 78-82 2017 5.666
Neena Prasad, B.Karthikeyan Cu-doping and annealing effect on the optical properties and enhanced photocatalytic activity of ZnO nanoparticles Vacuum 146 501-508 2017 3.627
Karthikeyan Balasubramanian Förster resonance energy transfer between α-Bi2O3 nanorods and rhodamine 6G in aqueous media and for turn off Glucose sensing application. Journal of Physics D : Applied Physics 50 145107 2017 3.207
T. Arun, Pranesh Sengupta, P.V.Satyam,..B. Karthikeyan Ion beam radiation effects on natural Halite crystals NIMB Proceedings 209 216-220 2017 1.377
T. Pandiyarajan, R.V. Mangalaraja...B. Karthikeyan Ultrasound assisted synthesis of morphology tuneable rGO:ZnO hybrid nanostructures and their optical and UV-A light driven photocatalysis Journal of Luminescence 186 53-61 2017 3.599
S. Hariharan, B.Karthikeyan Band bending effect induced non-enzymatic highly sensitive Glucose sensing in ZnO nanoparticles Journal of Luminescence 183 1-6 2017 3.599
S. Hariharan, B.Karthikeyan Optical and surface band bending mediated fluorescence sensing properties of MoS2 quantum dots RSC Advances RSC Adv 6 101770-101777 2017 4.036
B.Karthikeyan Förster resonance energy transfer and excited state life time reduction of rhodamine 6G with NiO nanorods in PVP films Spectrochimica Acta Part A: Mol. and Biomolecular Spect. 173 301–306 2017 4.098
Neena Prasad, B.Karthikeyan Optical, Phonon and Efficient visible and infrared photo Optical, Phonon and Efficient visible and infrared photocatalytic activity of Cu doped ZnS micro crystals Spectrochimica Acta Part A: Mol. and Biomolecular Spect. 173 687–694 2017 4.098
Pandiyarajan T, Saravanan R, Karthikeyan B, Gracia F, Héctor D. Mansilla, M.A. Gracia- Pinilla, Mangalaraja R Sonochemical synthesis of CuO nanostructures and their morphology dependent optical and visible light driven photocatalytic properties Journal of Materials Science: Materials in Electronics, 28 2448–2457 2017 2.478
B.Karthikeyan, R.Udayabaskar, S. Hariharan Tuning optical and three photon absorption in Graphene oxide - Poly vinylalcohol free standing films Applied Physics Letters 109 021904 2016 3.971
S. Muthu Mariappan, B. Karthikeyan Morphological tuned preparation of ZnO:reduced Graphene composites for non-enzymatic fluorescence glucose sensing and enhanced photocatalysis Applied Physics A 122 694 2016 2.584
Neena Prasad , V.M.M. Sai pavithra , S. Hariharan , T. Pandiyarajan, R.V. Mangalaraja, B.Karthikeyan Micro stress, strain, band gap tuning and photo catalytic properties of thermally annealed and Cu doped ZnO nanoparticles Applied Physics A 122 590 2016 2.584
I. Abdul Rasheed, V. Atchaiah Naidu, Mahender Kumar Gupta, Inder Mohan Chhabra, and B. Karthikeyan Improvement in the performance of laser based optical rotational sensor by reducing the stress co-efficient of optical component AIP Conference Proceedings     2016 0.402
S. Muthu Mariappan, B. Karthikeyan Optical and vibrational properties of Ag nano metal enhanced blue light emitting GrapheneOxide-Polyvinyl pyrrolidone polymer composites films Plasmonics 12 171–177 2016 2.404
Neena Prasad, Balasubramanian Karthikeyan Raman spectral probe on increased LocalVibrational Modes and Phonon lifetimes in Ho3+ doped Bi2O3 Micro-rods Journal of Raman Spectroscopy 47 1266–1270 2016 3.133
Udayabhaskar Rednam, Sreekanth P; Karthikeyan B Optical and nonlinear optical limiting properties of AgNi alloy nanostructures Plasmonics 11   2016 2.404
S. Hariharan, R. Udayabaskar, T.R. Ravindran, B. Karthikeyan Surfactant assisted control on optical, fluorescence and phonon lifetime in <alpha>-Bi2O3 micro rods Spectrochimica Acta Part A: Mol. and Biomole. Spectroscopy 152 485–490 2016 4.098
B. Karthikeyan, T. Pandiyarajan, S. Hariharan, Muhamed Shafi Ollakkan Wet chemical synthesis of diameter tuned NiO microrods: micro structural, optical and optical power limiting applications CrystEngComm, 18 601 - 607 2016 3.545
T. Pandiyarajan, R.V. Mngalaraja, ....B. Karthikeyan, Microstructure, vibrational and visible emission properties of low frequency ultrasound (42 kHz) assisted ZnO nanostructures RSC Advances 6 20437-20446 2016 4.036
Gururaj M. Neelgund, B. Karthikeyan, S.A. Shivashankar , Aderemi Oki Single-step, size-controlled synthesis of colloidal silver nanoparticles stabilized by octadecylamine Applied Surface Science 356 30 2015 6.707
T. Pandiyarajan, R.V. Mangalaraja, B. Karthikeyan, P. Sathishkumar, H. D. Mansilla, D. Contreras,R. José, M.A. G. Pinilla Morphology controlled synthesis of Sm doped ZnO nanostructures for photodegradation studies of Acid Blue 113 under UV-A light Journal of Materials Science: Materials in Electronics, 26 8784 2015 2.478
. Karthikeyan, T. Pandiyarajan, R.V. Mangalaraja Enhanced blue light emission in transparent ZnO:PVA nanocomposite free standing polymer films Spectrochimica Acta Part A: Mol. and Biomol. Spectroscopy, 152 485-490 2015 4.098
Siva Chidambaram, Ganga Gnanasekaran , G. Mohan Kumar, Baraneedharan Pari , Karthikeyan Balasubramanian, Sivakumar Muthusamy Colloidal synthesis and electrical behaviour of n-ZnGdO/p-Si heterojunction diodes Journal of Colloid and Interface Science 452 169 2015 8.128
. Pandiyarajan, R. V. Mangalaraja, B. Karthikeyan UV-A light induced photodegradation of Acid Blue 113 in the presence of Sm doped ZnO nanostructures Applied Physics A 119 487–495 2015 2.584
T. Pandiyarajan, R. V. Mangalaraja, B. Karthikeyan Enhanced ultraviolet fluorescence in surface modified ZnO nanostructures: Effect of PANI Spectrochimica Acta Part A 147 280-285 2015 4.098
R. Udayabhaskar, B. Karthikeyan Enhanced fluorescence and local vibrational mode in near-white light emitting ZnO:Mg nanorods system Journal American Ceramic Society 98 1807-1811 2015 3.784
R. Udayabhaskar, B. Karthikeyan, P. Sreekanth and Reji Philip Enhanced multi-phonon Raman scattering and nonlinear optical power limiting in ZnO:Aunanostructures RSC Adv. 5 13590-13597 2015 4.036
R.Udayabhaskar, R. V. Mangalaraja, B. Karthikeyan Enhanced fluorescence, Raman scattering and higher order Raman modes in ZnO:Ag nanorods Plasmonics 10 893–899 2015 2.404
B. Karthikeyan, R.Udayabhaskar, Priya Rose T., T. Pandiyarajan, Reji Philip Sol-gel prepared Cu2O microspheres: Linear and nonlinear optical properties RSC Adv. 4 39541 2014 4.036
R. Udayabhaskar, B. Karthikeyan Role of micro-strain and defects on band-gap, fluorescence in near white light emitting Sr doped ZnO nanorods Journal of Applied Physics 116 094310 2014 2.877
Balasubramanian Karthikeyan, R. Udayabhaskar, Ashwin Kishore Optical and phonon properties of Sm doped α-Bi2O3 microrods Applied Physics A 117 1409–1414 2014 2.584
J. L. Noel, R. Udayabhaskar, B. Renganathan, S. Muthu Mariappan, D.Sastikumar,B. Karthikeyan )Spectroscopic and fiber optic ethanol sensing properties Gd doped ZnO nanoparticles Spectrochimica Acta Part A 132 634-638 2014 4.098
R. Udayabhaskar, B. Karthikeyan Optical and phonon propeprties of ZnO:CuO mixed nanocomposite Journal of Applied Physics 115 154303 2014 2.877
R. Udayabhaskar, B. Karthikeyan, Muhamed Shafi Ollakkan Optical and saturation behavior of thermally surface Plasmon tuned Cu nanorod composite glasses Plasmonics 9 553–559 2014 2.404
R. Udayabhaskar, B. Karthikeyan, Muhamed Shafi Ollakkan, R.V. Mangalaraja, M. L. Baesso Enhanced fluorescence and optical power limiting in Ag- nanocomposite glasses Chemical Physics Letters 593 1-6 2014 2.328
R. Udayabhaskar, Muhaned Shafi Ollkkan, B. Karthikeyan Preparation, optical and non-linear optical power limiting propertiesof Cu, CuNi nanowires Applied Physics Letters 104 013107 2014 3.971
V. Bharathi, M. Sivakumar, R. Udayabhaskar, Hiromichi Takebe, B. Karthikeyan Optical, structural, enhanced local vibrational and fluorescence properties in K doped ZnO nanostructures Applied Physics A 116 395–401 2014 2.584
T. Pandiyarajan, M. L. Baesso, B. Karthikeyan Enhanced ultraviolet-blue emission and Raman modes in ZnO:Cr2O3 composite nanoparticles European Physical Journal D 68 28 2014 1.425
T. Pandiyarajan, B. Karthikeyan Birth of room temperature Magnons and Raman line enhancement in ZnO nanostructures containing Cobalt oxide Journal of Raman Spectroscopy 44 1534-1539 2013 3.133
R. Udayabhaskar, R.V. Mangalaraja, B. Karthikeyan Thermal annealing induced structural and optical properties of Ca doped ZnO nanoparticles Journal of Materials Science: Materials in Electronics 24 1045-1051 2013 2.478
T. Pandiyarajan, B. Karthikeyan Optical properties of annealing induced post growth ZnO:ZnFe2O4 nanocomposites Spectrochimica Acta Part A 106 247–252 2013 4.098
T. Pandiyarajan, R. Udayabhaskar, B. Karthikeyan Microstructure and enhanced exciton-phonon coupling in Fe doped ZnO nanoparticles Spectrochimica Acta Part A 103 173–178 2013 4.098
T. Pandiyarajan, R. Udayabhaskar, S. Vignesh, R. Arthur James, B. Karthikeyan Synthesis and concentration dependent antibacterial activities of CuO nanoflakes Materials Science and Engineering 33 2020–2024 2013  
R. Udayabhaskar, R.V Mangalaraja, D. Manikandan, V. Arjunan, B. Karthikeyan Room temperature synthesis and optical studies on Ag and Au mixed nanocomposite Polyvinylpyrrolidone polymer films Spectrochimica Acta Part A 99 69–73 2013 4.098
Deepthi K R, T. Pandiyarajan Thangaraj, B. Karthikeyan Vibrational, giant dielectric and ac conductivity properties of agglomerated CuO nanostructures Journal of Materials Science: Materials in Electronics 24 1045-1051 2013 2.478
T. Pandiyarajan, B. Karthikeyan Structural, thermal and optical properties of PVP capped ZnO films Advanced Materials Research 678 253-257 2013 -
M. Hussain Beevi, S. Vignesh, T. Pandiyarajan, P. Jegatheesan, R. Arthur James, N. V. Giridharan and B. Karthikeyan Synthesis and antifungal studies on CuO nanostructures Advanced Materials Research 666 488-489 2012 -
B. Karthikeyan Optical studies on thermally surfaceplasmon tuned Au, Ag and Au:Ag alloy nanocomposite polymer films Spectrochimica Acta Part A 96 456-600 2012 4.098
T. Pandiyarajan, R. Udayabhaskar, B. Karthikeyan Role of Fe doping on structural and vibrational properties of ZnO nanostructures. Applied Physics A 107 411-419 2012 2.584
T. Pandiyarajan, B. Karthikeyan Cr doping induced structural, phonon and excitonic properties of ZnO nanoparticles Journal of Nanoparticle Research 14 647 2012 2.253
R. Anitha, B. Karthikeyan, T. Pandiyarajan, S. Vignesh, Arthur james, K.Vishwanathan and B. M. Murari Antifungal studies on bio-compatible polymer encapsulated Silver nanoparticles International Journal of Nanoscience 10 1179-1183 2011 0.75
B. Karthikeyan, T. Pandiyarajan, K. Mangaiyarkarasi Optical properties of sol–gel synthesized calcium doped ZnO nanostructures Spectrochimica Acta Part A 82 97– 101 2011 4.098
N.G.C. Astrath, L.C. Malacarne, J.H. Rohling, A.N. Medina, M.L. Baesso, A.Steimacher, C. Jacinto,B. Karthikeyan Temperature dependence of the thermophysical properties of Neodymium doped borate glasses Optical Materials 33 33 1563–1568 2011 3.08
B. Karthikeyan Fluorescence quenching of Rhodamine-6G in Au nanocomposite polymers Journal of Applied Physics 108 084311 2010 2.877
B. Karthikeyan, Suchand Sandeep C S., T. Pandiyarajan, P. Venkatesan, Reji Philip Spectrally broadened excitonic oscillations and enhanced optical nonlinearities in Dy3+ doped ZnO nanoparticles Applied Physics A 306 231-234 2010 2.584
B. Karthikeyan, T. Pandiyarajan Simple room temperature synthesis and optical studies on Mg doped ZnO nanostructures J. Luminescence 130 2317–2321 2010 3.08
Sunil Kumar, N. Kamaraju, B. Karthikeyan, M. Tondusson, E. Freysz, A. K. Sood Terahertz Spectroscopy of Single-Walled Carbon Nanotubes in a Polymer Film:Observation of Low-Frequency Phonons J. Physical Chemistry. C 114 12446–12450 2010 4.126
Sunil Kumar, N. Kamaraju, B. Karthikeyan, M. Tondusson, E. Freysz, A. K. Sood Direct observation of low frequency confined acoustic phonons in silver nanoparticles: Terahertz time domain spectroscopy Journal of chemical Physics 133 14502 2010 3.488
B. Karthikeyan, C. S. Suchand Sandeep, Reji Philip, M. L. Baesso Study of optical properties and effective three-photon absorption in Bi-doped ZnO nanoparticles Journal of Applied Physics 106 114304 2009 2.877
B. Karthikeyan, T. Pandiyarajan, P. Venkatesan, C.S. Suchand Sandeep, and Reji Philip Optical and nonlinear absorption properties of Na doped ZnO nanoparticle dispersions Applied Physics Letters 95 023118 2009 3.971
T. Pandiyarajan, B. Karthikeyan, P. Venkatesan, M. Ashok, S. Anandan, N.V.Giridharan Simple synthesis and spectroscopic studies on cobalt added ZnO nanocrystals Spectrochimica Acta Part A 74 84 2009 4.098
C. Jacinto, T. Catunda, S. M. Lima, B. Karthikeyan Thermal lens and interferometric method for glass transition and thermo physical properties measurements in Nd2O3 doped sodium zincborate glass Optics Express 16 21248 2008 3.894
N Kamaraju, Sunil Kumar, B. Karthikeyan, Bhalchandra Kakade, Vijayamohanan K. Pillai, A. K. Sood Ultrafast switching time and third order nonlinear coefficients of microwave treated single walled carbon nanotube suspensions Journal of Nanosciecne and Nanotechnology 9 5550-4 2009 1.354
B. Karthikeyan Fluorescent glass embedded silver nanoclusters: An optical study Journal of Applied Physics 103 114313 2008 2.877
N. Kamaraju, Sunil Kumar, B. Karthikeyan, Alexander Moravsky, R. O. Loutfy, and A. K. Sood Ultrafast electron dynamics and cubic optical nonlinearity of freestanding thin film of double walled carbon nanotubes Applied Physics Letters 93 091903 2008 3.971
B. Karthikeyan, Suchand Sandeep C.S. Jaemine Cha, Hiromichi Takebe,Reji Philip, S. Mohan Optical properties and ultrafast optical nonlinearity of Yb3+ doped Sodium Borate and Bismuthate glasses Journal of Applied Physics 103 103509 2008 2.877
B. Karthikeyan, M. Anija, C.S. Suchand Sandeep, T.M. Muhammad Nadeer, Reji Philip Optical and nonlinear optical properties of copper nanocomposite glasses annealed near the glass softening temperature Optics Communications 281 2933 2008 2.31
B. Karthikeyan, M. Anija, P. Venkatesan, C.S. Suchand Sandeep, Reji Philip Ultrafast optical power limiting in free-standing Pt - polyvinyl alcohol nanocomposite films synthesized in situ Optics Communications 280 482 2007 2.31
B. Karthikeyan, Jinto Thomas, R. Kesavamoorthy Optical limiting with off-resonant excitations in Ag nanocomposite glasses: A z-scan study Journal of Non-Crystalline Solids 353 1346 2007 3.531
B. Karthikeyan Spectral studies on Cu2+ doped sodium leadbismuthate glasses Spectrochimica Acta A 66 860 2007 4.098
B. Karthikeyan Novel synthesis and optical properties of Sm3+ doped Au- polyvinyl alcohol nanocomposite films Chemical Physics Letters 432 513 2006 2.328
B. Karthikeyan, S. Mohan, S. P. Jose Optical Studies on Nd3+ doped sodium bismuthate glass Spectrochimica Acta A 65 1134 2006 4.098
B. Karthikeyan, M. Anija, Reji Philip In Situ synthesis and nonlinear optical properties of Au:Ag nanocomposite polymer films Applied Physics Letters 88 053104 2006 3.971
B. Karthikeyan FTIR spectral analysis on heavy metal borate glasses Modern Physics Letters 20 1 2006 2.066
B.Karthikeyan, Jinto Thomas, Reji Philip Optical Nonlinearity in glass-embedded silver nanoclusters under ultrafast laser excitation Chemical Physics Letters 414 346 2005 2.328
B. Karthikeyan, Reji Philip, S. Mohan Optical and Nonlinear optical properties of Nd3+-doped heavy metal borate glasses Optics Communications 246 153 2005 2.31
B. Karthikeyan Spectroscopic studies on Ag?polyvinyl alcohol nanocomposite films Physica B: Condensed Matter 364 328 2005 2.988
B. Karthikeyan and S. Mohan Spectroscopic and glass transition investigations on Nd3+-doped NaF?Na2O?B2O3 glasses Materials Research Bulletin 39 1507 2004 5.600
B. Karthikeyan, S. Mohan and M. L. Baesso Spectroscopic and glass transition studies on Nd3+-doped sodium zincborate glasses Physica B: Condensed Matter 337 249 2003 2.988
B. Karthikeyan and S. Mohan Optical and EPR studies on Cu2+-doped sodium borobismuthate glasses Materials Letters 57 3789 2003 3.423
B. Karthikeyan and S. Mohan Structural, optical and glass transition studies on Nd3+-doped lead bismuth borate glasses Physica B: Condensed Matter 334 298 2003 2.988



Contact Address

Dr. B. Karthikeyan
Room No. PH 319,  OJAS -New Science Building
Department of Physics
National Institute of Technology
Tiruchirappalli 620 015

email: bkarthik@nitt.edu, balkarin@gmail.com

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