Dr. J. Ramana Ramya received her Doctoral degree in Biomaterials from the Crystal Growth Centre at Anna University. She worked as a Research Fellow on a project funded by the Inter-University Accelerator Centre (IUAC), Delhi, India. She has in-depth knowledge of bioceramics and polymer composites for various biomedical applications. Dr. Ramya was awarded the Dr. D. S. Kothari Post-Doctoral Fellowship (DSKPDF) by the University Grants Commission (UGC) and was the principal investigator for a project on hyperthermia applications. She also has a year of postdoctoral experience at Tamkang University, Taiwan, where she conducted experiments at the National Synchrotron Radiation Research Centre (NSRRC). She has been recognized as a visiting professor and has received travel grants twice from the National Science and Technology Council (NSTC) in Taiwan in 2023 and 2024.
Dr. Ramya has published extensively in international peer-reviewed journals, including prestigious outlets such as Applied
RESEARCH, TEACHING, or OTHER INTERESTS
Biomaterials, Ceramics and Composites, Electronic, Optical and Magnetic Materials, Surfaces, Coatings and Films
Synthesis, analysis and characterization of structural, optical, photoluminescence, chromaticity, antimicrobial, antioxidant, and hemolysis properties of SnO2-NiO nanocomposites J. Gajendiran, Idamakanti Siva Kalyani, Vellaturi Ramya, Ch.Siva Chakravarthi, S. Gnanam, J.Ramana Ramya, P. Balraju, G. Thennarasu, R. Suresh, Lalitha Gnanasekaran Materials Science and Engineering B, 2026 SnO 2 -NiO nanocomposites were synthesized through co-precipitation utilizing two distinct tin oxide precursors (Sn powder and tin dichloride dihydrate) along with a nickel precursor (nickel nitrate). XRD analysis validated the presence of tetragonal rutile SnO 2 and face-centered cubic NiO phases, with increasing temperatures (450–650 °C) leading to improved crystallinity and increased crystallite size. FE-SEM analysis displayed average particle sizes ranging from 10-37 nm, depending on precursor and calcination temperature. EDX confirmed variations in elemental composition of Sn, O, and Ni with increasing calcination temperature. Optical studies of SnO 2 -NiO revealed a reduction in the band gap and photoluminescence (PL) emission intensity with increasing calcination temperature, accompanied by strong PL peaks at 393, 436, and 465 nm, corresponding to UV and blue emissions. The chromaticity diagrams of all calcined SnO 2 -NiO nanocomposites showed blue colour emissions. The antibacterial efficacy of SnO 2 -NiO nanocomposites was evaluated against E. coli and S. aureus . The nanocomposites demonstrated comparatively larger zones of inhibition against E. coli than against S. aureus , suggesting superior antibacterial effectiveness. Additionally, antioxidant and hemolysis tests were performed to evaluate the free radical scavenging capacity and hemocompatibility of the nanocomposites, respectively. The findings revealed a notable variation with respect to calcination temperature. In particular, as the calcination temperature increased, there was a decrease in the zone of inhibition, free radical scavenging activity, and hemolytic percentage. This reduction is likely attributed to the enhanced crystallinity of the nanocomposites at elevated temperatures.
Bifunctional NiCo-CuO Nanostructures: A Promising Catalyst for Energy Conversion and Storage Thanigai Arul Kumaravelu, Ta Thi Thuy Nga, Ramana Ramya J, Gajendiran J, Karthikeyan M, Wu‐Ching Chou, Jeng‐Lung Chen, Chi‐Liang Chen, Bi‐Hsuan Lin, Chao‐Hung Du, Ping‐Hung Yeh, Asokan Kandasami, Ju‐Hung Hsu, Chun‐Chieh Wang, Chung‐Li Dong Small Methods, 2025 This investigation explores the potential of co‐incorporating nickel (Ni) and cobalt (Co) into copper oxide (CuO) nanostructures for bifunctional electrochemical charge storage and oxygen evolution reactions (OER). A facile wet chemical synthesis method is employed to co‐incorporate Ni and Co into CuO, yielding diverse nanostructured morphologies, including rods, spheres, and flake. The X‐ray diffraction (XRD) and Raman analyses confirmed the formation of NiCo‐CuO nanostructure, with minor phases of nickel oxide (NiO) and cobalt tetraoxide (Co3O4). High‐resolution Transmission Electron Microscope (HRTEM) also confirms the diverse morphologies and the minor phases of oxides. Synchrotron X‐ray absorption spectroscopy revealed higher charge states of Cu, Ni, and Co in the NiCo‐CuO nanostructure, enhancing its charge storage and OER. Site‐selective X‐ray absorption near edge structure analysis elucidated the spatial distribution of Cu, Ni, and Co in the nanostructure. Furthermore, extended X‐ray absorption fine structure spectroscopy provided insights into the local atomic structures, revealing increased coordination numbers and interatomic distances in the NiCo‐CuO nanostructure. In situ Raman analysis discloses the transformation of Co3O4 into cobalt hydroxide (Co(OH)2) and cobalt oxide (CoO) into cobalt oxyhydroxide (CoOOH) The NiCo‐CuO nanostructures exhibited superior specific capacitance, favorable Tafel behavior, and low overpotential positioning as promising bifunctional materials for energy storage and conversion applications. This work contributes to the development of efficient CuO nanocatalysts.
The influence of temperature on the structural, morphological, optical, electrical, hemocompatibility and magnetic characterization of CoFe2O4 nanostructures Journal of Optoelectronics and Advanced Materials, 2020
Multiferroic characteristics of combustion-derived BiFeO₃–bi₂Fe₄O₉–CoO nanocomposites CE Jeyanthi, R Siddheswaran, R Vijayalakshmi, JR Ramya Materials Letters, 140945 , 2026 2026
Tunable Wettability and Antibacterial Potential of TiO 2 @PVA Electrospun Composite Nanofibers PM Preetha, JR Ramya, N Krishnasamy, R Gosala Biomedical Materials & Devices 4 (1), 1134-1142 , 2026 2026 Citations: 1
Synthesis of uncapped and graphite-capped ZnO nanostructures and their chromaticity and photocatalytic degradation of methylene blue for photonic emitting device and wastewater … J Gajendiran, P Udhayachozhan, D Sawyasasin, S Gnanam, JR Ramya, ... Materials Letters 403, 139437 , 2026 2026 Citations: 4
X-ray absorption spectroscopy perspective on electronic structure and catalysis of metal oxide heteronanostructures RR Jayapalan, TA Kumaravelu, L Vayssieres, CL Dong Nanoscale , 2026 2026
Optical properties and antimicrobial activity of sol-gel synthesis of GdMnO3–GdMn2O5 composite J Gajendiran, S Gnanam, P Prameela, JR Ramya, M Karthikeyan, ... Powder Metallurgy, 23-31 , 2026 2026
Synthesis, analysis and characterization of structural, optical, photoluminescence, chromaticity, antimicrobial, antioxidant, and hemolysis properties of SnO2-NiO nanocomposites LG J. Gajendiran, Idamakanti Siva Kalyani, Vellaturi Ramya, Ch.Siva ... Materials Science and Engineering: B 323, 118668 , 2026 2026 Citations: 2
Nanocrystalline YMnO3 through Microwave Reaction Followed by Calcination: Insights into Structural, Optical, and Chromaticity Properties for Potential Light Emitting Device … J Gajendiran, JR Ramya, S Gnanam, P Devendran, G Thennarasu, ... Ceramics International , 2025 2025 Citations: 1
Synthesis and physico-chemical characterization of ZnO nanostructures for LED, photocatalytic, and biomedical applications J Gajendiran, D Sawyasasin, P Udhayachozhan, S Gnanam, JR Ramya, ... Journal of the Indian Chemical Society 102 (8), 101867 , 2025 2025 Citations: 7
Bifunctional NiCo‐CuO Nanostructures: A Promising Catalyst for Energy Conversion and Storage TA Kumaravelu, TTT Nga, K M, WC Chou, JL Chen, CL Chen, BH Lin, ... Small Methods 9 (8), 2401463 , 2025 2025 Citations: 8
Investigation on the structural, optical, and biofunctional properties of MgO-NiO nanocomposites under influence of calcined temperature J Gajendiran, JR Ramya, R Vijayalakshmi, P Balraju, R Suresh, ... Inorganic Chemistry Communications, 115163 , 2025 2025 Citations: 4
Comparative study of multifunctional properties of the solid-state synthesized ZnO nanostructures and ZnO-graphite nanocomposites J Gajendiran, D Sawyasasin, S Gnanam, JR Ramya, P Balraju, ... Diamond and Related Materials, 112638 , 2025 2025 Citations: 5
Integration and characterization of advanced platelet-rich fibrin matrix combined with Terminalia Chebula-Derived gold nanoparticles for enhanced periodontal regeneration C Katariya, JR Ramya, G Kaarthikeyan Materials Letters 389, 138352 , 2025 2025 Citations: 2
Experimental investigations on the optical properties of solid-state synthesized SnO2 nanostructures for orange-emission LED applications J Gajendiran, P Balraju, S Gnanam, JR Ramya, G Thennarasu, R Suresh, ... Journal of the Indian Chemical Society 102 (6), 101731 , 2025 2025 Citations: 1
Fabrication of novel cross-linker-free chitosan/strontium bioglass composite for wound healing application A Sivalingam, RR Jayapalan, M Sampath, TA Kumaravelu, S Ali, CL Dong, ... International Journal of Biological Macromolecules, 142532 , 2025 2025 Citations: 2
Synthesis of undoped and mixed binary transition metals (Ni-Co)-doped cupric oxide nanostructures: structural characteristics, optical behavior, and biological activity M Karthikeyan, J Gajendiran, S Gnanam, JR Ramya, KT Arul, ... Journal of Molecular Structure 1321, 139895 , 2025 2025 Citations: 20
Structural, optical, chromaticity, and magnetic properties of uncapped and reduced graphene oxide (rGO) capped-β-Ni (OH) 2 nanostructures for spintronic devices, and LED … J Gajendiran, JR Ramya, S Gnanam, R Suresh, G Thennarasu Inorganic Chemistry Communications 172, 113720 , 2025 2025 Citations: 4
Microstructural and Elemental Characterization of Hydrated Carbonated Hydroxyapatite as Pulp Capping Agent: An in vitro Study SS Priyadharshini, C Ragavendran, JR Ramya, A Sherwood Journal of Dentistry Indonesia 32 (1), 55-60 , 2025 2025
Comparative evaluation of compressive strength and morphological interface of carbonated hydroxyapatite with other pulp capping materials: An in vitro analysis SS Priyadharshini, C Ragavendran, IA Sherwood, R Jayapalan Endodontology 37, 90-95 , 2025 2025 Citations: 6
Enhanced biocompatibility and antibacterial efficacy of CuO-HAp nanocomposite for hard tissue regeneration and repair PM Preetha, G Radha, KT Arul, JR Ramya Inorganic Chemistry Communications 171, 113654 , 2025 2025 Citations: 8
MOST CITED SCHOLAR PUBLICATIONS
Enhanced mechanical and biocompatible properties of strontium ions doped mesoporous bioactive glass SNK S. Amudha, J. Ramana Ramya, K. Thanigai Arul, A. Deepika, P ... Composites Part B: Engineering , 2020 2020 Citations: 109
Physicochemical and biological properties of iron and zinc ions co-doped nanocrystalline hydroxyapatite, synthesized by ultrasonication JR Ramya, KT Arul, K Elayaraja, SN Kalkura Ceramics International 40 (10), 16707-16717 , 2014 2014 Citations: 62
Glycine-assisted hydrothermal synthesis of pure and europium doped CeO2 nanoparticles and their structural, optical, photoluminescence, photocatalytic and antibacterial properties S Gnanam, J Gajendiran, JR Ramya, K Ramachandran, SG Raj Chemical Physics Letters 763, 138217 , 2021 2021 Citations: 50
Novel Gamma irradiated Agarose-Gelatin-hydroxyapatite nanocomposite scaffolds for skin tissue regeneration SNK J. Ramana Ramya, K. Thanigai Arul, P. Sathiamurthi, K. Asokan Ceramics International 42 (9), 11045-11054 , 2016 2016 Citations: 45
Green synthesis of magnesium ion incorporated nanocrystalline hydroxyapatite and their mechanical, dielectric and photoluminescence properties KT Arul, E Kolanthai, E Manikandan, GM Bhalerao, VS Chandra, ... Materials Research Bulletin 67, 55-62 , 2015 2015 Citations: 40
Chemical and structural analysis of gallstones from the Indian subcontinent JR Ramya, KT Arul, M Epple, U Giebel, J Guendel-Graber, V Jayanthi, ... Materials Science and Engineering: C 78, 878-885 , 2017 2017 Citations: 35
Gamma irradiated poly (methyl methacrylate)-reduced graphene oxide composite thin films for multifunctional applications JR Ramya, KT Arul, P Sathiamurthi, EAK Nivethaa, S Baskar, S Amudha, ... Composites Part B: Engineering 163, 752-760 , 2019 2019 Citations: 33
A competent bidrug loaded water soluble chitosan derivative for the effective inhibition of breast cancer EAK Nivethaa, S Baskar, CA Martin, A Ramana Ramya J Stephen, ... Scientific Reports 10 (1), 1-12 , 2020 2020 Citations: 30
Enhanced mechanical strength and sustained drug release of gelatin/keratin scaffolds P Ramadoss, KT Arul, JR Ramya, MR Begam, VS Chandra, ... Materials Letters 186, 109-112 , 2017 2017 Citations: 30
Enhancing supercapacitor performance with biomass-derived activated carbon interlinked CoS2 embedded graphitic carbon nitride RN S. Sathish, Thanigai Arul Kumaravelu, Cheng-Jie Yang, Ramana Ramya ... Journal of Alloys and Compounds 985, 174076 , 2024 2024 Citations: 27
The effect of calcination's temperature on the structural, morphological, optical behaviour, hemocompatibility and antibacterial activity of nanocrystalline Co3O4 powders J Gajendiran, N Sivakumar, CP Reddy, JR Ramya Ceramics International 46 (4), 5469-5476 , 2020 2020 Citations: 26
Thermally Modified Iron Inserted Calcium Phosphate for Magnetic Hyperthermia in an Acceptable Alternating Magnetic Field B Srinivasan, E Kolanthai, N Eluppai Asthagiri Kumaraswamy, ... The Journal of Physical Chemistry B 123 (26), 5506-5513 , 2019 2019 Citations: 26
Detection of the mineral constituents in human renal calculi by vibrational spectroscopic analysis combined with allied techniques Powder XRD, TGA, SEM, IR imaging and TXRF G Deshpande, J Tonannavar, J Tonannavar, SB Patil, VS Kundargi, ... Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 270, 120867 , 2022 2022 Citations: 24
Impact of Dopants on the Electrical and optical properties of Hydroxyapatite KT Arul, JR Ramya, SN Kalkura Biomaterials, 97 , 2020 2020 Citations: 23
Structural, optical and photocatalytic properties of ZnS spherical/flake nanostructures by sugar-assisted hydrothermal process J Gajendiran, S Gnanam, VV Kumar, K Ramachandran, JR Ramya, ... Chemical Physics Letters 754, 137639 , 2020 2020 Citations: 23
Ionic liquid assisted wet chemical synthesis CdS quantum dots and their structural, morphological, optical, electrochemical, photocatalytic, antibacterial and hemocompatibility … J Gajendiran, V Vijayakumar, VP Senthil, CP Reddy, JR Ramya, ... Optik 213, 164638 , 2020 2020 Citations: 23
Effect of nickel doping on the properties of hydroxyapatite nanoparticles P Kurinjinathan, K Thanigai Arul, J Ramana Ramya, E Manikandan, ... Journal of Nanoscience and Nanotechnology 20 (4), 2482-2487 , 2020 2020 Citations: 23
Physicochemical characterization of the superhydrophilic, magnesium and silver ions co-incorporated nanocrystalline hydroxyapatite, synthesized by microwave processing KT Arul, JR Ramya, GM Bhalerao, SN Kalkura Ceramics International 40 (9), 13771-13779 , 2014 2014 Citations: 21
Synthesis of undoped and mixed binary transition metals (Ni-Co)-doped cupric oxide nanostructures: structural characteristics, optical behavior, and biological activity M Karthikeyan, J Gajendiran, S Gnanam, JR Ramya, KT Arul, ... Journal of Molecular Structure 1321, 139895 , 2025 2025 Citations: 20
Enhanced magnetic behaviour and cell proliferation of gamma irradiated dual metal ions co-doped hydroxyapatite–poly (methyl methacrylate) composite films JR Ramya, KT Arul, P Sathiamurthi, K Asokan, NR Singh, SN Kalkura Reactive and Functional Polymers 123, 34-43 , 2018 2018 Citations: 18