175) Investigating the Impact of Microwave Irradiation on the Fano Asymmetric Resonance in 2H-MoS2 using Raman Spectroscopy.
Susmitha Balagopalan, Karthikeyan Balasubramanian
Applied Physics A (Accepted-2025)
174) Sign reversal of optical nonlinearity by Pauli Blocking in blue light-emitting Samarium Doped ZnO nanostructures
K, Janani Archana; Paul, Swati; Sharma, Anjali; Karthikeyan, Balasubramanian
ACS Applied Nano Materials (Accepted-2025) (cover Page Article)
173) Enhanced Saturable Absorption Induced by Pauli Blocking and Radiation-Induced Trapping with Negative Photoresponse in Cr₂O₃/MoS₂/PEDOT:PSS
Arjun K, Balasubramanian, Karthikeyan
Journal of Applied Physics. (Accepted-2025)
172) Probing the vibrational modes and Fano resonance of gold nanoparticles decorated MoS2 nanoflakes using Raman spectroscopy
Susmitha Balagopalan, Karthikeyan Balasubramanian
Journal of Applied Physics (Accepted-2025)
171) Unravelling the influence of Ag{111} nanoprism on the redox characteristics of Fe2O3 for efficient photocatalytic degradation
S. Gunasekaran, Mohd Shkir, Anjali Sharma, Balasubramanian Karthikeyan
Optical Materials (Accepted-2025)
170) Optical Bandgap Tuning and Cytotoxic Properties of Green Synthesized Reduced Graphene Oxide
Manuvarshan, Selvaraj, Venkatesh....B. Karthikeyan
Engineering Research Express (Accepted-2025)
169) Synthesis and Characterization of MoO3/PEDOT:PSS Nanocomposite for Flexible Photodetector and Nonlinear Optical Applications
Karthikeyan Balasubramanian, K.M.Megha , K.Arjun
Optics and Laser Technology (Accepted-2024)
168) Optical and sign-flipping nonlinear optical properties of NiO/PMMA/PANI nanocomposite films
Anjali, Karthikeyan Balasubramanian
Optical Materials (Accepted-2024)
167) Optical sensing and nonlinear optical properties of Cr-doped MoO3/PEDOT:PSS Nanocomposites
Karthikeyan Balasubramanian, Abhishek Kumar Choudhary, K.Arjun, Anjali Sharma
Optical Materials (Accepted-2024)
166) Assessing hidden corrosion in AZ91 magnesium alloy via infrared thermography in simulated atmospheric acid rain conditions
Yadhu Balakrishna, Janani Archana, ARJUN K and Karthikeyan Balasubramanian
Engineering Research Express (Accepted-2024)
165) Multivalency-Induced Structural Variations in 2D Selenium Nanosheets: Facile solution-phase Synthesis and Optical
Properties
Swathi V. M.,Arjun K., Anju Rajan, Raghu Chatanathodi, Karthikeyan Balasubramanian and Aji A. Anappara
Physical Chemistry Chemical Physics (Accepted-2024)
164) Plasmon Induced Ambipolar Photoresponse In Au-Decorated MoS2/PEDOT:PSS Nanocomposite Films
Arjun K,.Amaljith C. K.. Karthikeyan Balasubramanian
Journal of Applied Physics (Accepted-2024) {Editor's Pick -Article}
163) "Tandem FRET: A robust mechanism for efficient fabrication of WLED using an organic-inorganic hybrid mixture"
K, Janani Archana, Karthikeyan, Balasubramanian
ACS Applied Optical Materials (Accepted-2024)
162) Resonance Raman studies on phonon softening, phonon lifetime, Fano resonance, and multipeak analysis of MoS2 nanoflakes
Susmitha Balagopalan, Karthikeyan Balasubramanian
Journal of Raman Spectroscopy (Accepted-2024)
161) Modification of exciton lifetime and saturable absorption behavior of ZnO@MoS2/Polyaniline Nanocomposite Films
Paul, Swati; Karthikeyan, Balasubramanian
ACS Applied Optical Materials (Accepted-2024) (Featured as Cover Page Article)
160) Tuning Electron-Phonon Coupling in Se Doped Fe2O3 for Efficient Photocatalysis: Experimental and First-Principle Calculations
M. Ramar, S. Muthu Mariappan S. Gunasekaran, M. Navaneethan, A. Singhal, K. Yang, K. Janani Archana, Susmitha Balagopalan, N. Ambikeswari, Mohd. Shkir", Balasubramanian Karthikeyan
ACS Applied Nanomaterials (Accepted-2024)
159)Charge transfer induced linear and nonlinear optical properties in Polypyrrole/ZnO@MoS2 Ternary composites,"
Paul, Swati; Karthikeyan, Balasubramanian
Journal of Applied Physics (Accepted-2024)
158) Enhancing Saturable Absorption in Au-Decorated MoS2/PEDOT:PSS Nanocomposite through Plasmon Resonance and Pauli Blocking
Arjun K, Amaljith C. K., Karthikeyan Balasubramanian
Physical Chemistry Chemical Physics (Accepted-2024)
157)Role of Pauli blocking for enhancement of saturable absorption in MoS2/PEDOT:PSS nanocomposite films
Arjun K, Balasubramanian, Karthikeyan
Journal of Applied Physics. (Accepted-2023)
156) Many-body interaction governed ultrafast relaxation dynamics of hot holes in CuS nanoflakes and photocatalytic efficiency
enhanced CuS/Ag2S nanocomposites
Mukherjee, Soumya ; N M, Anjankumar; Ramesh, Saranya; Karthikeyan, Balasubramanian; Kamaraju, Natarajan
ACS Applied Optical Materials (Accepted-2023)
155) MoS2/PEDOT:PSS nanocomposite films for deep UV sensing: Role of the radiation-induced trapping and localization of charges
Arjun K, Balasubramanian, Karthikeyan
Applied Physics A (Accepted-2023)
154) Cr Doping Induced Fano Resonance of ZnO layered nanoporous structures and UV Photodetector Application
Chinnasamy, Madhumitha; Paul, Swati; Balagopalan, Susmitha; Karthikeyan, Balasubramanian
ACS Applied Optical Materials (Accepted-2023)
153) Investigation of conductivity and shielding efficiency of the free-standing PVA-GO-Ag composite thin films in terahertz regime using time domain terahertz spectroscopy
Soumya Mukherjee; Anjan NM; B Karthikeyan; N. Kamaraju
Applied Physics A (Accepted-2023)
152) Raman spectral studies on phonon softening, surface temperature, Fano resonance, and phase change in MoS2 nanoflakes.
Susmitha Balagopalan, Arjun K, Karthikeyan Balasubramanian
Applied Physics A (Accepted-2023)
151)Polyaniline and Copper based nanometal surface energy transfer probe for efficient turn-on bovine serum albumin sensing
Janani Archana K, Karthikeyan Balasubramanian
Optical Materials (Accepted-2023)
150) Fabrication and spectroscopic investigation of sandwich-like ZnO:rGO:ZnO:rGO:ZnO structure by layer-by-layer approach
T. Pandiyarajan, R. Mangalaraja, B.alasubramanian Karthikeyan, A. Arulraj, M.A. Gracia-Pinilla,
Inorganic Chemistry Communications (Accepted-2022)
149)Investigation of self-trapped excitonic dynamics in hematite nano-forms through non-degenerate pump-probe transmission spectroscopy
Anjan N M, Soumya Mukherjee, Anoop Sunny, B. Karthikeyan, and N. Kamaraju.
Applied Physics Letters (Accepted-2022)
148) Tailoring exciton diffusion length in ZnO@MoS2 core-shell/polyaniline nanocomposite films and photocurrent generation applications"
Paul, Swati; Karthikeyan, Balasubramanian
ACS Applied Nano Materials (Accepted-2022)
147) Ultrasonication assisted exfoliation of MoSe2 nanosheets for optical and optical limiting applications
Venkadeshkumar Ramar, Pratik M Pataniya, Solanki Gunvant, Karthikeyan Balasubramanian
Journal of Applied physics (Accepted-2022)
146)Investigation on Laser Induced Fano Resonance of Hydrothermally synthesized Ag doped ZnO hierarchical nanoporous structure and its UV Photodetector Properties"
C. Madhumidha, B.Karthikeyan
Optical Materials(Accepted-2022)
145)Phonon, magnon and magnetic properties of Cu doped NiO nanoparticles
Anoop Sunny,Karthikeyan Balasubramanian
Journal of Raman Spectroscopy (Accepted-2022)
144) Slow Excitonic Carrier Cooling in Sr-doped PbS Nanocrystals for Hot Carrier Devices: Integrated Experimental and First-principles Approach
Sivalingam Muthu Mariappan, Sung Jun Hong, Byungchan Han, Mohd. Shkir, Elangovan Vinoth, Stella Mary, Janani Archana,
Balasubramanian Karthikeyan, H. Algarni, and S. AlFaify
Journal of Materials Chemistry C (Accepted 2022) --- (Featured as cover page Article)
143) Influence of Urbach energy in enhanced photocatalytic activity of Cu doped ZnO nanoparticles
Janani Archana K, Christy preetha, Karthikeyan Balasubramanian
Optical Materials (Accepted 2022)
142) Probing nanometal surface energy transfer between nanocopper and MoS2 for glutathione sensing
Janani Archana K, Karthikeyan Balasubramanian
Journal of Physics D: Applied Physics (Accepted 2022)
141)Flexible Ultraviolet Photodetector based on flower-like ZnO/PEDOT:PSS nanocomposites
Arjun K, Balasubramanian, Karthikeyan
Applied Physics A (Accepted 2022)
140) "Multiple Exciton Dynamics in MoS2 Nanosheet/Poly(Methyl Methacrylate)/Polyaniline Composites and Nonlinear Optical Properties: Implications for Saturable Absorber Applications" Paul, Swati; Balasubramanian, Karthikeyan
ACS Applied Nano Materials (Accepted 2022)- (Featured as cover page Article)
139) Fractal and Multifractal analysis on Fused Silica Glass formed by Bound abrasive grain mediated grinding using diamond grits
Susmitha Balagopalan , I. Abdul Rasheed Hemant Sharma, Inder Mohan Chhabra, Mahender Kumar Gupta, P. Manimaran, B. Karthikeyan
Journal of Non-Crystalline Solids (Accepted 2022)
138) Influence of RE ( Pr3+, Er3+, Nd3+ ) doping on microstructural, vibrational and enhanced persistent photocatalytic properties of ZnO nanostructures
T. Pandiyarajan, R. V. Mangalaraja, B. Karthikeyan, Udaybhaskar, David Contreras, Selene Sepulveda Guzman, M.A. Gracia-Pinilla
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy (Accepted 2021)
137) Copper Oxide Nanorod/Reduced Graphene Oxide Composites for NH3 Sensing
Sivalingam Muthu Mariappan; Olmos-Asar, Jimena; Vinoth, Elangovan; Tharmar, Thangeeswari ; Shkir, Mohd; Said, Zafar ; Balasubramanian, Karthikeyan
ACS Applied Nano Materials (Accepted 2021)
136) Design and Synthesis of Triphenylamine Based Cyano Stilbenes for Picric Acid Sensing and Two Photon Absorption Applications
Arivalagan Shabashini, Venkadeshkumar Ramar, Balasubramanian Karthikeyan, Manas K Panda, and Ganesh Chandra Nandi
ChemistrySelect, (doi.org/10.1002/slct.20210308 )
135) Enhanced linear and nonlinear optical response in CuS/Ag2S nanocomposites
Karthikeyan Balasubramanian, Swati Paul, J. Pradeepthi Krishma
Applied Physics A 127, 744 (2021)
134) Alumina Abrasive Grains mediated grinding induced Glass Surface and fractal analysis of SiO2 glass
I.Abdul Rasheed,Swati paul , Inder Mohan Chhabra, MahenderKumar Gupta, B. Karthikeyan
Engineering Research Express - (accepted 2021)
133) Surface Preparation and analysis on Fused Silica Glass substrate with deterministic grinding method
I.Abdul Rasheed, Inder Mohan Chhabra, MahenderKumar Gupta, B. Karthikeyan
Materials Today: Proceedings (doi: 10.1016/j.matpr.2021.03.221)- (accepted 2021)
132) Optical and Strong blue emission properties of Alumina Abrasive Grains mediated grinding induced SiO2 Glass Surfaces for Navigation Grade Sensors
I.Abdul Rasheed, Venkadeshkumar Ramar , Inder Mohan Chhabra, MahenderKumar Gupta, B. Karthikeyan
Optical Materials (accepted 2021)
131)Reduced Graphene Oxide/WO3 Nanorod Composites for Photocatalytic Degradation of Methylene Blue under Sunlight irradiation
Ramar, Venkadeshkumar; Balasubramanian, Karthikeyan
ACS applied nanomaterials (accepted 2021)
130)Impact of Reducing Agents on the Ammonia Sensing Performance of Silver Decorated Reduced Graphene Oxide: Experiment and First Principles Calculations
Sivalingam Muthu Mariappan, E. Mathan Kumar, Udo Schwingenschlögl,ThangeeswariTharmar, Elangovan Vinoth, Mohd.Shkir5, Zafar Said, Balasubramanian Karthikeyan
Applied Surface Science (Accepted -2021)
128) Laser induced phonon and magnon properties of NiO Nanoparticles: A Raman study
Anoop Sunny,Karthikeyan Balasubramanian
Journal of Raman Spectroscopy (Accepted-2021)
127) Effect of reduced graphene oxide on the sun light-driven photocatalytic activity of rGO/h-MoO3 nanocomposites
Ramar, Venkadeshkumar; Karthikeyan, Balasubramanian
Journal of Physics D: Applied Physics (Accepted-2021)
126)Enhanced UV photodetection behavior of Cr doped wurtzite ZnO crystalline nanorods
C. Madhumidha, B.Karthikeyan
Optical Materials(Accepted-2020)
125) Plasmon induced enhancement of surface phonon and magnon properties of NiO nanoparticles: Raman spectral probe
Anoop Sunny, Karthikeyan Balasubramanian
Physical Chemistry Chemical Physics(Accepted-2020)
124) Graphene oxide - Polymethyl methacrylate coatings for Corrosion protection of aerospace aluminium alloy 7075 – T651 surfaces
S, Aravindh; B, Karthikeyan
Engineering Research Express (Accepted-2020)
123) Charge transfer induced excitons and nonlinear optical properties of ZnO/PEDOT:PSS nanocomposite films
Swatipaul, B. Karthikeyan
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy (Accepted-2020)
122) Cu-doped zinc oxide fiber optic sensor for acetone detection at room temperature M.Manjula, B. Karthikeyan, D.Sastikumar Applied Physics A(Accepted-2020)
121) Thermally Influenced, Optical and fluorescence properties of Zinc Oxide nanoparticles for Glutathione sensing
Janani Archana K, B. Karthikeyan
Applied Physics A(Accepted-2020)
120) Unravelling the synergistic effect of reduced graphene oxide on optical, phonon and optical power limiting properties of rGO/α-MoO3 nanohybrids
Venkadeshkumar Ramar, Karthikeyan Balasubramanian
Applied Physics A (Accepted-2020)
119) Optical, Spectroscopic and Fiber Optic Gas Sensing of Potassium Doped
α -Fe2O3 Nanostructures
A.Kalaipriya, Anoop Sunny, B, Karthikeyan, D.Sastikumar
Optical Fiber Technology (Accepted-2020)
118) Raman Spectral Probe on Size Dependent Surface Optical Phonon Modes and Mangnon Properties of NiO Nanoparticle
Sunny, Anoop; Balasubramanian, Karthikeyan
The Journal of Physical Chemistry C (Accepted-2020)
117) Strong violet emission and optical power limiting properties of rGO/MoO3 synergistic composites
Venkadeshkumar Ramar, Karthikeyan Balasubramanian
Journal of Applied Physics (Accepted-2020)
116) Laser induced fano scattering, electron- phonon coupling, bond length and phonon life time of α-Fe2O3 nanostructure
Anoop Sunny,T. Arun, B. Karthikeyan
Physical Chemistry Chemical Physics(Accepted-2019)
115)Optical, Phonon and Fluorescence properties of PVA-GO-ZnO free standing films
Karthikeyan Balasubramanian
Applied Physics A(Accepted-2019)
114) Optical and Highly Enhanced Solar Light-driven Photocatalytic Activity of Reduced Graphene Oxide Wrapped α-MoO3 Nanoplates
Venkadeshkumar Ramar, Karthikeyan Balasubramanian
Solar Energy (Accepted-2019)
113) Effect of Laser power on force constant and phonon lifetime of stretching and bending vibration of Cu-doped WO3 nanostructures
C. Madhumidha, B.Karthikeyan
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2019, 225:117514. DOI:10.1016/j.saa.2019.117514
112)Phase dependent structural, optical, phonon and UV sensing properties of ZnS nanoparticles
Prasad, Neena; Karthikeyan, Balasubramanian
Nanotechnology, 2019, 30 485702
DOI: 10.1088/1361-6528/ab3cbf
111)Fluorescence ON-OFF Switching, Boolean logic gates like behavior of Carbon Quantum Dots and highly sensitive bovine serum albumin sensing
S. Hariharan , B.Karthikeyan
Journal of Applied Physics 126, 084503 (2019);
DOI:10.1063/1.5099464
110) Quantum chemical analysis on supramolecular assemblies of guanidinium tetrafluoroborate (GFB) crystal structure: Emission and NLO behaviour
S.Nandhini, S.Muniyappan, VenkadeshkumarRamar, Karthikeyan Balasubramanian, P.Murugakoothan
Journal of Molecular Structure, 2019, Volume 1198, 126859
DOI: 10.1016/j.molstruc.2019.07.106
109) Unraveling the synergistic influences of graphene and CuO on the structural, photon and phonon properties of graphene:CuO nanocomposites
R.Udayabhaskar, R.Suresh. R.V.Mangalaraja, JorgeYáñez, B.Karthikeyan
DavidContreras
Carbon, 152, (2019) 766-776
DOI: 10.1016/j.carbon.2019.06.074
108) Ultrafast Carrier Dynamics of Undoped and Ho3+ Doped α-Bismuth Oxide Micro-Rods
Jit Sarkar, Shankar G Menon, Neena Prasad, B. Kathikeyan, N. Kamaraju
J. Phys. Chem. C 2019, 123, 10007−10012
DOI:10.1021/acs.jpcc.8b12514
107) Modulation of Optical and Photocatalytic Properties by Morphology and Microstrain in Hierarchical Ceria Nanostructures
R.Udayabhaskar.V.Mangalaraja, .... B.Karthikeyan, DavidContreras, M.A.Gracia-Pinilla
Solar Energy Materials and Solar Cells (Accepted 2019), Volume 195, 15 June 2019, Pages 106-113
DOI: 10.1016/j.solmat.2019.02.033
106) Optical, vibrational and fluorescence recombination pathway properties of nano SiO2-PVA composite films
B. Karthikeyan, S. Hariharan, Arya Sasidharan, V. Gayathri, T. Arun, Ali Akbari-Fakhrabadi, C. Madhumitha
Optical materials (Accepted 2019), Volume 90, April 2019, Pages 139-144
DOI: 10.1016/j.optmat.2019.01.063
105)Raman Spectral Probe on Polar w-ZnS Nanostructures and Surface Optical Phonon Modes in Nanowires
Prasad, Neena; Karthikeyan, Balasubramanian
Nanoscale (Accepted 2019) ,11, 4948-4958
DOI: 10.1039/C8NR07988A
104) Tunable bandgap and blue emission of ZnS nanoparticles induced by controlled S vacancies
Prasad, Neena; Karthikeyan, Balasubramanian
Journal of Applied Physics 125, 085702 (2019)
DOI: 10.1063/1.5083656
103) Design of "Turn-ON and Turn-OFF" Fluorescence Switching based Photonic Logic Gates through Multiple Input-Output Models by MoS2 Quantum Dots
S. Hariharan , B.Karthikeyan
Journal of Colloid and Interface Science (Accepted 2019), Volume 540, 22 March 2019, Pages 258-264
DOI: 10.1016/j.jcis.2019.01.004
102) Ultrafast electron hole plasma dynamics in chemically pristine and Ag-doped ZnO nanorods
Jit Sarkar, Shankar G Menon, C. Madhumitha, B. Kathikeyan, N. Kamaraju
Journal of Applied Physics 124, 243103 (2018); DOI:10.1063/1.5058121
101) Charge transfer induced tunable bandgap and enhanced saturable absorption behavior in rGO/WO3 composites
Venkadeshkumar Ramar, Karthikeyan Balasubramanian
Applied Physics A (Accepted 2018) 124:779
DOI: 10.1007/s00339-018-2191-3
100) Optical, phonon and fiber optic gas sensing properties of Hematite microparticles
Anoop Sunny, Neena Prasad, Devendiran Subbaiyan, Sastikumar Dillibabu,
Balasubramanian Karthikeyan
Applied Physics A 124(10) · September 2018
DOI: 10.1007/s00339-018-2077-4
99) Tuneable fluorescent, recombination pathways of biogenic Au - SiO2 nanospheres from rice husk: An Optical study
Karthikeyan Balasubramanian
Optical Materials (Accepted 2018), Volume 88, February 2019, Pages 223-228
DOI: 10.1016/j.optmat.2018.11.026
98) Graphene induced band gap widening and luminescence quenching in ceria:graphene nanocomposites
R.Udayabhaskar R.V.Mangalarajaa, S.F. Sahlevani V.T.Perarasu , B.Karthikeyan , D. Contrerase, M.A.G. Pinillag
Journal of Alloys and Compounds (Accepted 2018), Volume 770, 5 January 2019, Pages 1221-1228
DOI: 10.1016/j.jallcom.2018.08.226
97) Resonant and Off-Resonant Phonon Properties of Wurtzite ZnS: Effect of Morphology on Fröhlich Coupling and Phonon Lifetime"
Prasad, Neena; Karthikeyan, Balasubramanian
J. Phys. Chem. C 2018, 122 31, 18117-18123
DOI: 10.1021/acs.jpcc.8b05164
96) Effect of morphology on optical and efficiently enhanced electrical properties of W-ZnS for UV sensor Applications
Neena Prasad, Balasubramanian Karthikeyan
Journal of Applied Physics 124, 045702 (2018);
DOI: 10.1063/1.5040433
95) Sensing characteristics of clad-modified (Ho-doped Bi2O3 nanoparticles) fibre optic gas sensor
M. Manjula, B. Karthikeyan, D. Sastikumar
Optical Fiber Technology, Volume 45, November 2018, Pages 35-39
DOI: 10.1016/j.yofte.2018.05.009
94) Optical and optical limiting studies on NiO-PVA composite films for opto-electronics
B. Karthikeyan, S. Hariharan, R.V. Mangalaraja, T. Pandiyarajan, R. Udayabhaskar, P. Sreekanth
IEEE Photonic Technology Letters, Volume: 30 , Issue: 17 , Sept.1, 1 2018, Page(s): 1539 - 1542
DOI: 10.1109/LPT.2018.2859042
93) Metal free, sunlight and white light based photocatalysis using Carbon quantum dots from Citrus grandis: A green way to remove pollution.
Venkadeshkumar Ramar; shaheer Moothattu; Karthikeyan Balasubramanian
Solar Energy, Volume 169, 15 July 2018, Pages 120-127
DOI: 10.1016/j.solener.2018.04.040
92)Broad band and enhanced photocatalytic behaviour of Ho3+ doped Bi2O3 micro-rods
Neena Prasad, Balasubramanian Karthikeyan
Applied Physics A: Materials Science & Processing . Jun2018, Vol. 124 Issue 6, p1-1
DOI: 10.1007/s00339-018-1802-3
91) Dopant induced Local Vibrational Modes and Fano scattering in Ag doped ZnO microrods
C. Madhumidha, B.Karthikeyan
Spectrochimica Acta Part A: Molecular and Biomolecular Spect., Volume 199, 15 June 2018, Pages 322-327
DOI: 10.1016/j.saa.2018.03.068
90) Fӧrster resonance energy transfer between MoS2 quantum dots and polyaniline for turn-on bovine serum albumin sensing
S. Hariharan , B.Karthikeyan,
Sensors & Actuators: B. Chemica, Volume 264, 1 July 2018, Pages 337-343
DOI: 10.1016/j.snb.2018.02.182
89) Highly sensitive sensing of glutathione based on Förster resonance energy transfer between MoS2 donors and Rhodamine 6G acceptors and its insight
B.Karthikeyan, S. Hariharan
Sensors & Actuators: B. Chemical (Accepted 2017), Volume 259, 15 April 2018, Pages 980-989
DOI:10.1016/j.snb.2017.12.144
88) Environment dependent enhanced photoluminescence and Boolean logic gates like behavior of Bi2O3 and Ag:Bi2O3 nanostructures.
S. Hariharan, B.Karthikeyan
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy(Accepted 2017), 2018 Mar 15;193:344-348.
DOI: 10.1016/j.saa.2017.12.022
87) Optical, phonon properties of ZnO-PVA, ZnO-GO-PVA nanocomposite free standing polymer films for UV sensing
Morget Martin, Neena Prasad, Muthu Mariappan Sivalingam, D. Sastikumar, Balasubramanian Karthikeyan
Journal of Materials Science: Materials in Electronics (Accepted 2017), January 2018, Volume 29, Issue 1, pp 365–373
DOI: 10.1007/s10854-017-7925-z
86) Spectroscopic investigation on graphene-copper nanocomposites with strong UV emission and high catalytic activity
R. Udayabhaskar; Mangalaraja, R. V.; T. Pandiyarajan; B. Karthikeyan, M. Héctor D
Carbon, Volume 124, November 2017, Pages 256-262
DOI: 10.1016/j.carbon.2017.08.061
85) High catalytic activity of monometallic Ag, Cu nanostructures in degradation of Acid Blue 113 dye: an electron relay effect
R. Udayabhaskar; Mangalaraja, R. V.; T. Pandiyarajan; B. Karthikeyan, M. Héctor D.
2017 Mater. Res. Express 4 095002
DOI: 10.1088/2053-1591/aa8064
84) Excited State Electron, Energy Transfer Dynamics between 2D MoS2 and GO/RGO for Turn ON BSA/HSA Sensing
Swaminathan Hariharan; Ramar Venkadeshkumar; Karthikeyan Balasubramanian
J. Phys. Chem. C 2017, 121, 23, 12585-12592
DOI: 10.1021/acs.jpcc.7b02611
83) Spectroscopic Investigation on rGO:ZnO Composites Nanostructures
T. Pandiyarajan, R V Mangalaraja, B. Karthikeyan Héctor D. Mansilla M. A. Gracia-Pinilla
Recent Trends in Materials Science and Applications , vol 189, pp 63-69
DOI:10.1007/978-3-319-44890-9_7
82) Sensing characteristics of nanocrystalline bismuth oxide clad-modified fiber optic gas sensor
M. Manjula, B. Karthikeyan, D. Sastikumar
Optics and Lasers in Engineering 95,(2017), 78-82
DOI: 10.1016/j.optlaseng.2017.04.003
81) Cu-doping and annealing effect on the optical properties and enhanced photocatalytic activity of ZnO nanoparticles
Neena Prasad, B.Karthikeyan
Vacuum (accepted -2017), Volume 146, page 501-508
DOI: 10.1016/j.vacuum.2017.03.028
80) Förster resonance energy transfer between α-Bi2O3 nanorods and rhodamine 6G in aqueous media and for turn off Glucose sensing application.
Karthikeyan Balasubramanian
Journal of Physics D: Applied Physics 2017, 50 145107
DOI: 10.1088/1361-6463/aa6018
79) Ion beam radiation effects on natural Halite crystals
T. Arun, Pranesh Sengupta, P.V.Satyam,..B. Karthikeyan
NIMB Proceedings , 2017, Volume 209, Page 216-220
DOI: 10.1016/j.nimb.2017.03.062
78) Ultrasound assisted synthesis of morphology tuneable rGO:ZnO hybrid nanostructures and their optical and UV-A light driven photocatalysis
T. Pandiyarajan, R.V. Mangalaraja...B. Karthikeyan
Journal of Luminescence, 2017, Volume 186, Page 53-61
DOI: 10.1016/j.jlumin.2017.02.013
77) Band bending effect induced non-enzymatic highly sensitive Glucose sensing in ZnO nanoparticles
S. Hariharan, B.Karthikeyan
Journal of Luminescence,(accepted -2016), Volume 183, Page 1-6, 2017
DOI: 10.1016/j,jlumin.2016.10.046
76) Optical and surface band bending mediated fluorescence sensing properties of MoS2 quantum dots
S. Hariharan, B.Karthikeyan
RSC Advances RSC Adv., 6, 101770-101777 (2016)
DOI: 10.1039/C6RA21157G
75) Förster resonance energy transfer and excited state life time reduction of rhodamine 6G with NiO nanorods in PVP films
B.Karthikeyan
Spectrochimica Acta Part A: Mol. and Biomolecular Spect.,173 (15), 301–306 (2017).
DOI: 10.1016/j.saa.2016.09.004
74) Optical, Phonon and Efficient visible and infrared photo Optical, Phonon and Efficient visible and infrared photocatalytic activity of Cu doped ZnS micro crystals
Neena Prasad, B.Karthikeyan
Spectrochimica Acta Part A: Mol. and Biomolecular Spect.,173 (15) 687–694 (2017).
DOI: 10.1016/j.saa.2016.10.014
73) Sonochemical synthesis of CuO nanostructures and their morphology dependent optical and visible light driven photocatalytic properties
Pandiyarajan T, Saravanan R, Karthikeyan B, Gracia F, Héctor D. Mansilla, M.A. Gracia- Pinilla, Mangalaraja R
Journal of Materials Science: Materials in Electronics, (Accepted-2016), February 2017, Volume 28, Issue 3, pp 2448–2457
DOI:10.1007/s10854-016-5817-2.
72) Tuning optical and three photon absorption in Graphene oxide - Poly vinylalcohol free standing films
B.Karthikeyan, R.Udayabaskar, S. Hariharan
Applied Physics Letters, 109, 021904 (2016)
DOI: 10.1063/1.4955475
71) Morphological tuned preparation of ZnO:reduced Graphene composites for non-enzymatic fluorescence glucose sensing and enhanced photocatalysis
S. Muthu Mariappan, B. Karthikeyan
Applied Physics A 122(7), (2016)
DOI: 10.1007/s00339-016-0166-9
70) Micro stress, strain, band gap tuning and photo catalytic properties of
thermally annealed and Cu doped ZnO nanoparticles
Neena Prasad , V.M.M. Sai pavithra , S. Hariharan , T. Pandiyarajan, R.V. Mangalaraja, B.Karthikeyan
Applied Physics A 122: 590, (2016)
DOI:10.1007/s00339-016-0121-9.
69) Improvement in the performance of laser based optical rotational sensor by reducing the stress co-efficient of optical component
I. Abdul Rasheed, V. Atchaiah Naidu, Mahender Kumar Gupta, Inder Mohan Chhabra, and B. Karthikeyan
AIP Conference Proceedings (020455-1–020455-7;
DOI: 10.1063/1.4946506)
68)Optical and vibrational properties of Ag nano metal enhanced blue light emitting GrapheneOxide-Polyvinyl pyrrolidone polymer composites films
S. Muthu Mariappan, B. Karthikeyan
Plasmonics, (Accepted-2016), February 2017, Volume 12, Issue 1, pp 171–177
DOI: 10.1007/s11468-016-0245-y.
67) Raman spectral probe on increased Local Vibrational Modes and Phonon lifetimes in Ho3+ doped Bi2O3 Micro-rods
Neena Prasad, Balasubramanian Karthikeyan
Journal of Raman Spectroscopy, 47 (10), 1266–1270 (2016).
DOI: 10.1002/jrs.4950
66) Optical and nonlinear optical limiting properties of AgNi alloy nanostructures
Udayabhaskar Rednam, Sreekanth P; Karthikeyan B,
Plasmonics 11(6) · April 2016
DOI: 10.1007/s11468-016-0197-2.
65) Surfactant assisted control on optical, fluorescence and phonon lifetime in <alpha>-Bi2O3 micro rods
S. Hariharan, R. Udayabaskar, T.R. Ravindran, B. Karthikeyan
Spectrochimica Acta Part A: Mol. and Biomole. Spectroscopy, 152 (5) 485–490 (2016).
DOI: 10.1016/j.saa.2016.02.045
64) Wet chemical synthesis of diameter tuned NiO microrods: micro structural, optical and optical power limiting applications
B. Karthikeyan, T. Pandiyarajan, S. Hariharan, Muhamed Shafi Ollakkan
CrystEngComm, 18, 601 - 607 (2016)
DOI: 10.1039/C5CE02232K
63)Microstructure, vibrational and visible emission properties of low frequency ultrasound (42 kHz) assisted ZnO nanostructures
T. Pandiyarajan, R.V. Mngalaraja, ....B. Karthikeyan,
RSC Advances, 6, 20437-20446 (2016).
DOI: 10.1039/C5RA27147A
62) Single-step, size-controlled synthesis of colloidal silver nanoparticles stabilized by octadecylamine
Gururaj M. Neelgund, B. Karthikeyan, S.A. Shivashankar , Aderemi Oki
Applied Surface Science, 356, 30, (2015).
DOI: 10.1016/j.apsusc.2015.07.209
61) Morphology controlled synthesis of Sm doped ZnO nanostructures for photodegradation studies of Acid Blue 113 under UV-A light
T. Pandiyarajan, R.V. Mangalaraja, B. Karthikeyan, P. Sathishkumar, H. D. Mansilla, D. Contreras,R. José, M.A. G. Pinilla
Journal of Materials Science: Materials in Electronics, 26: 8784 (2015).
DOI: 10.1007/s10854-015-3558-2
60) Enhanced blue light emission in transparent ZnO:PVA nanocomposite free standing polymer films
B. Karthikeyan, T. Pandiyarajan, R.V. Mangalaraja
Spectrochimica Acta Part A: Mol. and Biomol. Spectroscopy, 2015, Volume 152, Page 485-490
DOI.10.1016/j.saa.2015.07.053.
59) Colloidal synthesis and electrical behaviour of n-ZnGdO/p-Si heterojunction diodes
Siva Chidambaram, Ganga Gnanasekaran , G. Mohan Kumar, Baraneedharan Pari , Karthikeyan Balasubramanian, Sivakumar Muthusamy
Journal of Colloid and Interface Science 452, 169(2015)
DOI: 10.1016/j.jcis.2015.04.018
58) UV-A light induced photodegradation of Acid Blue 113 in the presence of Sm doped ZnO nanostructures
T. Pandiyarajan, R. V. Mangalaraja, B. Karthikeyan
Applied Physics A, May 2015, Volume 119, Issue 2, pp 487–495
DOI: 10.1007/s00339-015-9102-7
57) Enhanced ultraviolet fluorescence in surface modified ZnO nanostructures: Effect of PANI
T. Pandiyarajan, R. V. Mangalaraja, B. Karthikeyan
Spectrochimica Acta Part A: (Accepted)-2015, Volume 147, Page 280-285
DOI: 10.1016/j.saa.2015.02.088
56) Enhanced fluorescence and local vibrational mode in near-white light emitting ZnO:Mg nanorods system
R. Udayabhaskar, B. Karthikeyan
Journal American Ceramic Society (Accepted)-2015, 98(6), Pages 1807-1811
DOI: 10.1111/jace.13516
55) Enhanced multi-phonon Raman scattering and nonlinear optical power limiting in ZnO:Au nanostructures
R. Udayabhaskar, B. Karthikeyan, P. Sreekanth and Reji Philip
RSC Adv., 2015,5, 13590-13597
DOI: 10.1039/C4RA11204K
54) Enhanced fluorescence, Raman scattering and higher order Raman modes in
ZnO:Ag nanorods
R.Udayabhaskar, R. V. Mangalaraja, B. Karthikeyan
Plasmonics, August 2015, Volume 10, Issue 4, pp 893–899
DOI: 10.1007/s11468-015-9877-6
53) Sol-gel prepared Cu2O microspheres: Linear and nonlinear optical properties
B. Karthikeyan, R.Udayabhaskar, Priya Rose T., T. Pandiyarajan, Reji Philip
RSC Adv., 2014,4, 39541
DOI: 10.1039/C4RA05649C
52) Role of micro-strain and defects on band-gap, fluorescence in near white light emitting Sr doped ZnO nanorods
R. Udayabhaskar, B. Karthikeyan
Journal of Applied Physics 116, 094310 (2014)
DOI: 10.1063/1.4893562
51) Optical and phonon properties of Sm doped α-Bi2O3 microrods
Balasubramanian Karthikeyan, R. Udayabhaskar, Ashwin Kishore
Applied Physics A (Accepted-2014), Volume 117, Issue 3, pp 1409–1414
DOI: 10.1007/s00339-014-8565-2
50)Spectroscopic and fiber optic ethanol sensing properties Gd doped ZnO nanoparticles
J. L. Noel, R. Udayabhaskar, B. Renganathan, S. Muthu Mariappan, D.Sastikumar,B. Karthikeyan
Spectrochimica Acta Part A (Accepted)-2014, Volume 132, Page 634-638
DOI: 10.1016/j.saa.2014.04.012
49) Optical and phonon propeprties of ZnO:CuO mixed nanocomposite
R. Udayabhaskar, B. Karthikeyan
Journal of Applied Physics 115, 154303 (2014)
DOI: 10.1063/1.4870447
48) Optical and saturation behavior of thermally surface Plasmon tuned Cu nanorod composite glasses
R. Udayabhaskar, B. Karthikeyan, Muhamed Shafi Ollakkan
Plasmonics 2014, Volume 9, Issue 3, pp 553–559
DOI:10.1007/s11468-013-9663-2
47) Enhanced fluorescence and optical power limiting in Ag- nanocomposite glasses
R. Udayabhaskar, B. Karthikeyan, Muhamed Shafi Ollakkan, R.V. Mangalaraja, M. L. Baesso
Chemical Physics Letters 593 (2014) 1-6
DOI: 10.1016/j.cplett.2013.12.058
46) Preparation, optical and non-linear optical power limiting propertiesof Cu, CuNi nanowires
R. Udayabhaskar, Muhaned Shafi Ollkkan, B. Karthikeyan
Applied Physics Letters 104, 013107 (2014)
DOI: 10.1063/1.4858406
45)Optical, structural, enhanced local vibrational and fluorescence properties in K doped ZnO nanostructures
V. Bharathi, M. Sivakumar, R. Udayabhaskar, Hiromichi Takebe, B. Karthikeyan
Applied Physics A , 2014, Volume 116, Issue 1, pp 395–401
DOI: 10.1007/s00339-013-8139-8
44) Enhanced ultraviolet-blue emission and Raman modes in ZnO:Cr2O3 composite nanoparticles
T. Pandiyarajan, M. L. Baesso, B. Karthikeyan
European Physical Journal D ((2014) 68: 28 )
DOI: 10.1140/epjd/e2013-40363-3
43) Birth of room temperature Magnons and Raman line enhancement in ZnO nanostructures containing Cobalt oxide
T. Pandiyarajan, B. Karthikeyan
Journal of Raman Spectroscopy 44 (2013) 1534-1539
42) Thermal annealing induced structural and optical properties of Ca doped ZnO nanoparticles
R. Udayabhaskar, R.V. Mangalaraja, B. Karthikeyan
Journal of Materials Science: Materials in Electronics 24 (2013) 3183-3188
41) Synthesis and concentration dependent antibacterial activities of CuO nanoflakes
T. Pandiyarajan, R. Udayabhaskar, S. Vignesh, R. Arthur James, B. Karthikeyan
Materials Science and Engineering: C 33 (2013) 2020–2024
40) Optical properties of annealing induced post growth ZnO:ZnFe2O4 nanocomposites
T. Pandiyarajan, B. Karthikeyan
Spectrochimica Acta Part A 106 (2013) 247–252
39) Microstructure and enhanced exciton-phonon coupling in Fe doped ZnO nanoparticles
T. Pandiyarajan, R. Udayabhaskar, B. Karthikeyan
Spectrochimica Acta Part A 103 (2013) 173–178
38)Room temperature synthesis and optical studies on Ag and Au mixed nanocomposite Polyvinylpyrrolidone polymer films
R. Udayabhaskar, R.V Mangalaraja, D. Manikandan, V. Arjunan, B. Karthikeyan
Spectrochimica Acta Part A 99 (2012) 69–73
37)Vibrational, giant dielectric and ac conductivity properties of agglomerated CuO nanostructures
Deepthi K R, T. Pandiyarajan Thangaraj, B. Karthikeyan
Journal of Materials Science: Materials in Electronics 24 (2013) 1045-1051
36)Structural, thermal and optical properties of PVP capped ZnO films
T. Pandiyarajan, B. Karthikeyan
Advanced Materials Research 678 (2013) 253-257
35) Synthesis and antifungal studies on CuO nanostructures
M. Hussain Beevi, S. Vignesh, T. Pandiyarajan, P. Jegatheesan, R. Arthur James, N. V. Giridharan and B. Karthikeyan
Advanced Materials Research 488-489, 666(2012)
34) Optical studies on thermally surfaceplasmon tuned Au, Ag and Au:Ag alloy nanocomposite polymer films
B. Karthikeyan
Spectrochimica Acta Part A 96 (2012) 456-60
33) Role of Fe doping on structural and vibrational properties of ZnO nanostructures.
T. Pandiyarajan, R. Udayabhaskar, B. Karthikeyan
Applied Physics A 107 (2012) 411-419
32) Cr doping induced structural, phonon and excitonic properties of ZnO nanoparticles
T. Pandiyarajan, B. Karthikeyan
Journal of Nanoparticle Research 14 (2012) 647
31) Antifungal studies on bio-compatible polymer encapsulated Silver nanoparticles
R. Anitha, B. Karthikeyan, T. Pandiyarajan, S. Vignesh, Arthur james, K.Vishwanathan and B. M. Murari
International Journal of Nanoscience, 10, (2011) 1179-1183
30) Optical properties of sol–gel synthesized calcium doped ZnO nanostructures
B. Karthikeyan, T. Pandiyarajan, K. Mangaiyarkarasi
Spectrochimica Acta Part A 82 (2011) 97– 101
29) Temperature dependence of the thermophysical properties of Neodymium doped borate glasses
N.G.C. Astrath, L.C. Malacarne, J.H. Rohling, A.N. Medina, M.L. Baesso, A.Steimacher, C. Jacinto,B. Karthikeyan
Optical Materials 33 (2011) 1563–1568
28) Fluorescence quenching of Rhodamine-6G in Au nanocomposite polymers
B. Karthikeyan
Journal of Applied Physics 108, 084311 (2010)
27)Spectrally broadened excitonic oscillations and enhanced optical nonlinearities in Dy3+ doped ZnO nanoparticles
B. Karthikeyan, Suchand Sandeep C S., T. Pandiyarajan, P. Venkatesan, Reji Philip
Applied Physics A (2010) 306,231-234
26) Simple room temperature synthesis and optical studies on Mg doped ZnO nanostructures
B. Karthikeyan, T. Pandiyarajan
J. Luminescence 130 (2010) 2317–2321
25) Terahertz Spectroscopy of Single-Walled Carbon Nanotubes in a Polymer Film:Observation of Low-Frequency Phonons
Sunil Kumar, N. Kamaraju, B. Karthikeyan, M. Tondusson, E. Freysz, A. K. Sood
J. Physical Chemistry. C 114 (2010) 12446–12450
24) Direct observation of low frequency confined acoustic phonons in silver nanoparticles: Terahertz time domain spectroscopy
Sunil Kumar, N. Kamaraju, B. Karthikeyan, M. Tondusson, E. Freysz, A. K. Sood
Journal of chemical Physics 133, 014502 (2010)
23) Study of optical properties and effective three-photon absorption in
Bi-doped ZnO nanoparticles
B. Karthikeyan, C. S. Suchand Sandeep, Reji Philip, M. L. Baesso
Journal of Applied Physics 106, 114304 (2009).
22) Optical and nonlinear absorption properties of Na doped ZnO nanoparticle dispersions
B. Karthikeyan, T. Pandiyarajan, P. Venkatesan, C.S. Suchand Sandeep, and Reji Philip
Applied Physics Letters 95, 023118 (2009).
21)Simple synthesis and spectroscopic studies on cobalt added ZnO nanocrystals
T. Pandiyarajan, B. Karthikeyan, P. Venkatesan, M. Ashok, S. Anandan, N.V.Giridharan
Spectrochimica Acta Part A 74, 84 (2009).
20) Thermal lens and interferometric method for glass transition and thermo physical properties measurements in Nd2O3 doped sodium zincborate glass
N. G. C. Astrath, A. Steimacher, J. H. Rohling, A. N. Medina, A. C. Bento, M. L. Baesso,
C. Jacinto, T. Catunda, S. M. Lima, B. Karthikeyan
Optics Express, 16, 21248 (2008).
19) Ultrafast switching time and third order nonlinear coefficients of microwave treated single walled carbon nanotube suspensions
N Kamaraju, Sunil Kumar, B. Karthikeyan, Bhalchandra Kakade, Vijayamohanan K. Pillai, A.
K. Sood
Journal of Nanosciecne and Nanotechnology 9 (2009) 5550-4
18) Fluorescent glass embedded silver nanoclusters: An optical study
B. Karthikeyan
Journal of Applied Physics 103, 114313 (2008).
17)Ultrafast electron dynamics and cubic optical nonlinearity of freestanding thin film of double walled carbon nanotubes
N. Kamaraju, Sunil Kumar, B. Karthikeyan, Alexander Moravsky, R. O. Loutfy, and A. K. Sood
Applied Physics Letters 93, 091903 (2008)
16) Optical properties and ultrafast optical nonlinearity of Yb3+ doped Sodium Borate and Bismuthate glasses
B. Karthikeyan, Suchand Sandeep C.S. Jaemine Cha, Hiromichi Takebe,Reji Philip, S. Mohan
Journal of Applied Physics 103, 103509 (2008).
15)Optical and nonlinear optical properties of copper nanocomposite glasses annealed near the glass softening temperature
B. Karthikeyan, M. Anija, C.S. Suchand Sandeep, T.M. Muhammad Nadeer, Reji Philip
Optics Communications,281, 2933 (2008)
14) Ultrafast optical power limiting in free-standing Pt - polyvinyl alcohol nanocomposite films synthesized in situ
B. Karthikeyan, M. Anija, P. Venkatesan, C.S. Suchand Sandeep, Reji Philip
Optics Communications, 280, 482 (2007)
13) Optical limiting with off-resonant excitations in Ag nanocomposite glasses: A z-scan study
B. Karthikeyan, Jinto Thomas, R. Kesavamoorthy
Journal of Non-Crystalline Solids, 353, 1346 (2007)
12) Spectral studies on Cu2+ doped sodium leadbismuthate glasses
B. Karthikeyan
Spectrochimica Acta A 66,860 (2007)
11) Novel synthesis and optical properties of Sm3+ doped Au- polyvinyl alcohol
nanocomposite films
B. Karthikeyan
Chemical Physics Letters 432, 513 (2006)
10) Optical Studies on Nd3+ doped sodium bismuthate glass
B. Karthikeyan, S. Mohan, S. P. Jose
Spectrochimica Acta A 65, 1134 (2006)
9) In Situ synthesis and nonlinear optical properties of Au:Ag nanocomposite polymer films
B. Karthikeyan, M. Anija, Reji Philip
Applied Physics Letters 88, 053104 (2006)
8) FTIR spectral analysis on heavy metal borate glasses
B. Karthikeyan
Modern Physics Letters B 20, 1 (2006)
7) Optical Nonlinearity in glass-embedded silver nanoclusters under ultrafast laser
excitation
B.Karthikeyan, Jinto Thomas, Reji Philip
Chemical Physics Letters 414, 346 (2005)
6) Optical and Nonlinear optical properties of Nd3+-doped heavy metal borate glasses
B. Karthikeyan, Reji Philip, S. Mohan
Optics Communications 246, 153 (2005)
5) Spectroscopic studies on Ag?polyvinyl alcohol nanocomposite films
B. Karthikeyan
Physica B: Condensed Matter,364, 328( 2005)
4) Spectroscopic and glass transition investigations on Nd3+-doped NaF?Na2O?B2O3 glasses
B. Karthikeyan and S. Mohan
Materials Research Bulletin, 39,1507(2004)
3) Spectroscopic and glass transition studies on Nd3+-doped sodium zincborate glasses
B. Karthikeyan, S. Mohan and M. L. Baesso
Physica B: Condensed Matter, 337, 249 (2003)
2) Optical and EPR studies on Cu2+-doped sodium borobismuthate glasses
B. Karthikeyan and S. Mohan
Materials Letters, 57, 3789 (2003)
1) Structural, optical and glass transition studies on Nd3+-doped lead bismuth borate glasses
B. Karthikeyan and S. Mohan
Physica B: Condensed Matter, 334, 298( 2003)