Publications

 

2023

 

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) ​

2022

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)

2021

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, Venkadeshkumar Ramar , 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)

129) Raman spectral probed electron-phonon and phonon lifetime properties of Ni-doped CuO nanoparticles
Karthikeyan Balasubramanian
Applied Physics A(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)

2020
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

Jananni 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) ​

​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 <alpha>-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 ​(Accepted-2019) ​

112)Phase dependent structural, optical, phonon and UV sensing properties of ZnS nanoparticles
Prasad, Neena; Karthikeyan, Balasubramanian
Nanotechnology​(Accepted-2019) 

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​(Accepted-2019) 

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​ (Accepted-2019)

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

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
The Journal of Physical Chemistry C (​Accepted 2019)

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)

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)

105)Raman Spectral Probe on Polar w-ZnS Nanostructures and Surface Optical Phonon Modes in Nanowires
Prasad, Neena; Karthikeyan, Balasubramanian
Nanoscale (​Accepted 2019)
​
104) Tunable bandgap and blue emission of ZnS nanoparticles induced by controlled S vacancies
Prasad, Neena; Karthikeyan, Balasubramanian
Journal of Applied Physics (​Accepted 2019)

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)

2018

102) Charge transfer induced tunable bandgap and enhanced saturable absorption behavior in rGO/WO3 composites
Venkadeshkumar Ramar, Karthikeyan Balasubramanian
Applied Physics A (​Accepted 2018)

101) Optical, phonon and fiber optic gas sensing properties of Hematite microparticles
Anoop Sunny, Neena Prasad, Devendiran Subbaiyan, Sastikumar Dillibabu,
Balasubramanian Karthikeyan
Applied Physics A (​Accepted 2018)

100) Tuneable fluorescent, recombination pathways of biogenic  Au - SiO2 nanospheres from rice husk: An Optical study
Karthikeyan Balasubramanian
Optical Materials (​Accepted 2018)

​
99) 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)

98) Resonant and Off-Resonant Phonon Properties of Wurtzite ZnS: Effect of Morphology on Fröhlich Coupling and Phonon Lifetime"
Prasad, Neena; Karthikeyan, Balasubramanian
The Journal of Physical Chemistry C (​Accepted 2018)

97) 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 (​Accepted 2018)

​96) Sensing characteristics of clad-modified (Ho-doped Bi2O3 nanoparticles) fibre optic gas sensor
M. Manjula, B. Karthikeyan, D. Sastikumar
Optical Fiber Technology (​Accepted 2018)

95) 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 (​Accepted 2018)

94) 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 (​Accepted 2018)

93)Broad band and enhanced photocatalytic behaviour of Ho3+ doped Bi2O3 micro-rods
Neena Prasad, Balasubramanian Karthikeyan
Applied Physics A (​Accepted 2018)

92) 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. (​Accepted 2018)

91) Fӧrster resonance energy transfer between MoS2 quantum dots and polyaniline for turn-on bovine serum albumin sensing
S. Hariharan , B.Karthikeyan, 
Sensors & Actuators: B. Chemical (​Accepted 2018)

90) 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)

89) 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)

2017

88) 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)

87) 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 (Accepted 2017)

86) 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.
Materials Research Express(Accepted 2017)
​
85) Excited State Electron, Energy Transfer Dynamics between 2D MoS2 and GO, RGO for Turn ON BSA, HSA Sensing
Swaminathan Hariharan; Ramar Venkadeshkumar; Karthikeyan Balasubramanian
The Journal of Physical Chemistry C (Accepted 2017)

84) 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 (10.1007/978-3-319-44890-9_7)
 
83) 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
​
82) Cu-doping and annealing effect on the optical properties and enhanced photocatalytic activity of ZnO nanoparticles
​Neena Prasad, B.Karthikeyan
Vacuum (accepted -2017)

81) Morphological tuned preparation of zinc oxide: reduced graphene oxide composites for non-enzymatic fluorescence glucose sensing and enhanced photocatalysis
Sivalingam Muthu Mariappan, Balasubramanian Karthikeyan
Applied Physics A (accepted -2017)

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(accepted -2017)​

79) Ion beam radiation effects on natural Halite crystals 
T. Arun, Pranesh Sengupta, P.V.Satyam,..B. Karthikeyan
NIMB Proceedings ​(accepted -2017)

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,(accepted -2017)​

​77)  Band bending effect induced non-enzymatic highly sensitive Glucose sensing in ZnO nanoparticles 
S. Hariharan, B.Karthikeyan
Journal of Luminescence,(accepted -2016)

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)

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).

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).

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, (2016), doi:10.1007/s10854-016-5817-2.

2016

72 Tuning optical and three photon absorption in Graphene oxide - Poly vinylalcohol free standing films" 
B.Karthikeyan : R.Udayabaskar, S. Hariharan
Applied Physics Letters  (ACCEPTED-2016)

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 (Accepted-2016)

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 (Accepted-2016)

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)


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  (Accepted 2016)
​

66) Optical and nonlinear optical limiting properties of AgNi alloy nanostructures
Udayabhaskar Rednam, Sreekanth P; Karthikeyan B, 
Plasmonics (Accepted 2016)


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 (Accepted 2016)
 
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)

63)Microstructure, vibrational and visible emission properties of low frequencyultrasound (42 kHz) assisted ZnO nanostructures 
T. Pandiyarajan​, R.V. Mngalaraja, ....B. Karthikeyan, 
RSC Advances (accepted -2016)

2015

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  (accepted-2015)

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 (accepted-2015)


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 (accepted-2015)


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)


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 (Accepted)-2015

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

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

55) Enhanced multi-phonon Raman scattering andnonlinear optical power limiting in ZnO:Au nanostructures
R. Udayabhaskar, B. Karthikeyan, P. Sreekanth and Reji Philip
 RSC Advances (Accepted)-2015

54) Enhanced fluorescence, Raman scattering and higher order Raman modes in
ZnO:Ag nanorods
R.Udayabhaskar, R. V. Mangalaraja, B. Karthikeyan
Plasmonics (Accepted)-2015

2014

53) Sol-gel prepared Cu2O microspheres: Linear and nonlinear optical properties
B. Karthikeyan, R.Udayabhaskar, Priya Rose T., T. Pandiyarajan, Reji Philip
RSC Advances (Accepted)-2014 


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 (Accepted)-2014 

51) Optical and phonon properties of Sm doped α-Bi2O3 microrods
Balasubramanian Karthikeyan, R. Udayabhaskar, Ashwin Kishore
Applied Physics A (Accepted-2014)

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

49) Optical and phonon propeprties of ZnO:CuO mixed nanocomposite
R. Udayabhaskar, B. Karthikeyan
Journal of Applied Physics (Accepted)-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 (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

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)

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 (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 )

2013

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

2012

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
 

2011


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

2010

 

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)

2009


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).

2008

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)