2024

Pires, T., Han, R., Karthikeyan, V. , Abohmra, A., Tahir, F., Abbas, H. , Imran, M. and Abbasi, Q. (2024) Hybrid Metal-Topological Insulator Terahertz Metasurface for Ultrasensitive Refractive Index Biosensing. In: 2024 IEEE International Symposium on Antennas and Propagation and ITNC-USNC-URSI Radio Science Meeting, Florence, Italy, 14-19 Jul 2024, (Accepted for Publication)

Assi, D. S., Huang, H., Karthikeyan, V. , Theja, V. C.S., Merlyne de Souza, M. and Roy, V. A.L. (2024) Topological quantum switching enabled neuroelectronic synaptic modulators for brain computer interface. Advanced Materials, (doi: 10.1002/adma.202306254) (Early Online Publication)

Dehghani, P., Karthikeyan, V. , Tajabadi, A., Assi, D. S., Catchpole, A., Wadsworth, J., Leung, H. Y. and Roy, V. A.L. (2024) Rapid near-patient impedimetric sensing platform for prostate cancer diagnosis. ACS Omega, (doi: 10.1021/acsomega.4c00843) (Early Online Publication)

2023

Pires, T., Han, R., Karthikeyan, V. , Abohmra, A., Tahir, F. A., Abbas, H. , Imran, M. and Abbasi, Q. (2023) Ultrahigh Sensitive Terahertz Metasurface with 2D MoS2 for Refractive Index Biosensing. In: 18th European Conference on Antennas and Propagation (EuCAP 2024), Glasgow, Scotland, 17-22 March 2024, (Accepted for Publication)

Theja, V. C.S., Karthikeyan, V. , Assi, D. S., Huang, H., Shek, C.-H. and Roy, V. A.L. (2023) Dispersion of InSb nanoinclusions in Cu3SbS4 for improved stability and thermoelectric efficiency. Advanced Energy and Sustainability Research, 4(11), 2300125. (doi: 10.1002/aesr.202300125)

Assi, D. S., Huang, H., Kandira, K. U., Alsulaiman, N. S., Theja, V. C. S., Abbas, H. , Karthikeyan, V. and Roy, V. A. L. (2023) Charge mediated Copper Iodide based artificial synaptic device with ultrahigh neuromorphic efficacy. Physica Status Solidi - Rapid Research Letters, 17(10), 2300191. (doi: 10.1002/pssr.202300191)

Theja, V. C. S., Assi, D. S., Huang, H., Alsulami, R. S., Chen, B. J., Chan, C.-H., Shek, C.-H., Karthikeyan, V. and Roy, V. A. L. (2023) 3D architectural MXene composite films for stealth terahertz shielding performance. Advanced Materials Interfaces, (doi: 10.1002/admi.202300440) (Early Online Publication)

Assi, D. S., Huang, H., Karthikeyan, V. , Theja, V. C.S., de Souza, M. M., Xi, N., Li, W. J. and Roy, V. A.L. (2023) Quantum topological neuristors for advanced neuromorphic intelligent systems. Advanced Science, 10(24), 2300791. (doi: 10.1002/advs.202300791) (PMID:37340871) (PMCID:PMC10460853)

Assi, D. S., Haris, M. P.U., Karthikeyan, V. , Kazim, S., Ahmad, S. and Roy, V. A.L. (2023) Low switching power neuromorphic perovskite devices with quick relearning functionality. Advanced Electronic Materials, 9(8), 2300285. (doi: 10.1002/aelm.202300285)

Tajabadi, A. M.A.A.S., Dehghani, P., Assi, D. S., Karthikeyan, V. , Huang, C.-B., Abbas, H. T. and Roy, V. A.L. (2023) Compact magnetic field amplification by tuned Lenz lens. IEEE Sensors Journal, (doi: 10.1109/JSEN.2023.3297254) (Early Online Publication)

Theja, V. C.S., Karthikeyan, V. , Nayak, S., Kandira, K. U., Assi, D. S., Kannan, V. and Roy, V. A.L. (2023) Facile composite engineering to boost thermoelectric power conversion in ZnSb device. Journal of Physics and Chemistry of Solids, 178, 111329. (doi: 10.1016/j.jpcs.2023.111329)

2022

Theja, V. C. S., Karthikeyan, V. , Assi, D. S., Gopalan, S. and Roy, V. A. L. (2022) Probing the effect of MWCNT nanoinclusions on the thermoelectric performance of Cu3SbS4 composites. ACS Omega, 7(51), pp. 48484-48492. (doi: 10.1021/acsomega.2c06823) (PMID:36591112) (PMCID:PMC9798489)

Theja, V. C. S., Karthikeyan, V. , Assi, D. S. and Roy, V. A. L. (2022) Insights into the classification of nanoinclusions of composites for thermoelectric applications. ACS Applied Electronic Materials, 4(10), pp. 4781-4796. (doi: 10.1021/acsaelm.2c00617)

Hlaing, M. Z., Karthikeyan, V. , Wu, W., Chen, B. J., Ng, A. K., Chan, C.-H., De Souza, M. M. and Roy, V. A.L. (2022) 3D microstructured frequency selective surface based on carbonized polyimide films for terahertz applications. Advanced Optical Materials, 10(8), 2102178. (doi: 10.1002/adom.202102178)

Theja, V. C. S., Karthikeyan, V. , Yeung, C.-C., Venkatesh, S., Nayak, S. and Roy, V. A. L. (2022) Amorphous carbon nano-inclusions for strategical enhancement of thermoelectric performance in Earth-abundant Cu3SbS4. Journal of Alloys and Compounds, 900, 163433. (doi: 10.1016/j.jallcom.2021.163433)

Velmurugan, K. et al. (2022) A review of heat batteries based PV module cooling—case studies on performance enhancement of large-scale solar PV system. Sustainability, 14(4), 1963. (doi: 10.3390/su14041963)

Karthikeyan, V. , Theja, V. C.S., De Souza, M. M. and Roy, V. A.L. (2022) Hierarchically interlaced 2D copper iodide/MXene composite for high thermoelectric performance. Physica Status Solidi - Rapid Research Letters, 16(1), 2100419. (doi: 10.1002/pssr.202100419)

Theja, V. C. S., Karthikeyan, V. , Musah, J.-D., Wu, C.-M. L. and Roy, V. A. L. (2022) Thermoelectric properties of sulfide and selenide-based materials. In: Dalapati, G. K., Wong, T. K. S., Kundu, S., Chakraborty, A. K. and Zhuk, S. (eds.) Sulfide and Selenide Based Materials for Emerging Applications: Sustainable Energy Harvesting and Storage Technology. Elsevier, pp. 293-328. ISBN 9780323998604 (doi: 10.1016/B978-0-323-99860-4.00009-5)

2021

Karthikeyan, V. , Oo, S. L., Surjadi, J. U., Li, X., Theja, V. C.S., Kannan, V., Lau, S. C., Lu, Y., Lam, K.-H. and Roy, V. A.L. (2021) Defect engineering boosted ultrahigh thermoelectric power conversion efficiency in polycrystalline SnSe. ACS Applied Materials and Interfaces, 13(49), pp. 58701-58711. (doi: 10.1021/acsami.1c18194) (PMID:34851624)

Maniarasu, S., Karthikeyan, V. , Korukonda, T. B., Pradhan, S. C., Soman, S., Ramasamy, E. and Veerappan, G. (2021) Ambient processed perovskite sensitized porous TiO2 nanorods for highly efficient and stable perovskite solar cells. Journal of Alloys and Compounds, 884, 161061. (doi: 10.1016/j.jallcom.2021.161061)

Rekha, S. M. S., Karthikeyan, V. , Thuy, L. T. T., An Binh, Q., Techato, K., Kannan, V., Roy, V. A.L. , Sukchai, S. and Velmurugan, K. (2021) Efficient heat batteries for performance boosting in solar thermal cooking module. Journal of Cleaner Production, 324, 129223. (doi: 10.1016/j.jclepro.2021.129223)

Mannu, R. et al. (2021) Facile use of silver nanoparticles-loaded alumina/silica in nanofluid formulations for enhanced catalytic performance toward 4-nitrophenol reduction. International Journal of Environmental Research and Public Health, 18(6), 2994. (doi: 10.3390/ijerph18062994) (PMID:33803950) (PMCID:PMC7999000)

Vaithinathan, K. , Sundaram, G. A. and Anbalagan, K. (2021) New monomeric mixed-ligand complex of iron(III)-3-chloropyridine: Synthesis, structure, luminescence, electrochemical and magnetic properties. Journal of Molecular Structure, 1225, 129160. (doi: 10.1016/j.molstruc.2020.129160)

Mannu, R. et al. (2021) Polyethylene glycol coated magnetic nanoparticles: hybrid nanofluid formulation, properties and drug delivery prospects. Nanomaterials, 11(2), 440. (doi: 10.3390/nano11020440)

Lin Oo, S., Venkatesh, S., Karthikeyan, V. , Arava, C. M., Pathikonda, S., Yu, P. K. N., Lau, T. C. K., Chen, X. and Roy, V. A.L. (2021) Highly sensitive and cost-effective portable sensor for early gastric carcinoma diagnosis. Sensors, 21(8), 2639. (doi: 10.3390/s21082639)

2020

Karthikeyan, V. , Surjadi, J. U., Wong, J. C.K., Kannan, V., Lam, K.-H. , Chen, X., Lu, Y. and Roy, V. A.L. (2020) Wearable and flexible thin film thermoelectric module for multi-scale energy harvesting. Journal of Power Sources, 455, 227983. (doi: 10.1016/j.jpowsour.2020.227983)

Karthikeyan, V. , Li, T., Medasani, B., Luo, C., Shi, D., Wong, J. C.K., Lam, K.-H. , Ling, F. C.C. and Roy, V. A.L. (2020) Defect and dopant mediated thermoelectric power factor tuning in β‐Zn 4 Sb 3. Advanced Electronic Materials, 6(4), 1901284. (doi: 10.1002/aelm.201901284)

Karthikeyan, V. , Arava, C. M., Hlaing, M. Z., Chen, B., Chan, C. H., Lam, K.-H. and Roy, V. A.L. (2020) Dislocation-induced ultra-low lattice thermal conductivity in rare earth doped β-Zn4Sb3. Scripta Materialia, 174, pp. 95-101. (doi: 10.1016/j.scriptamat.2019.08.037)

M., R., R., P., Karthikeyan, V. , Roy, V. A. L. , Gopalan, A.-I., Saianand, G., Kim, W.-J. and Kannan, V. (2020) A comparative evaluation of physicochemical properties and photocatalytic efficiencies of cerium oxide and copper oxide nanofluids. Catalysts, 10(1), 34. (doi: 10.3390/catal10010034)

Oo, S. L., Ilyas, A.-M., Karthikeyan, V. , Arava, C. M., Kong, E. Y., Yeung, C.-C., Chen, X., Yu, P. K.N. and Vellaisamy, R. A.L. (2020) Gating a single cell: a label-free and real-time measurement method for cellular progression. Analytical Chemistry, 92(2), pp. 1738-1745. (doi: 10.1021/acs.analchem.9b03136) (PMID:31904934)

2019

KaniAmuthana, B., Vinotha, S., Vaithinathan, K. , Roy, V. A.L. and Thilakan, P. (2019) Influence of nitrogen dopant source on the structural, photoluminescence and electrical properties of ZnO thin films deposited by pulsed spray pyrolysis. Ceramics International, 45(18A), pp. 24324-24330. (doi: 10.1016/j.ceramint.2019.08.147)

Cai, X.-M., Wang, B., Ye, F., Vaithinathan, K. , Zeng, J.-J., Zhang, D.-P., Fan, P. and Roy, V.A.L. (2019) Tuning the photoluminescence, conduction mechanism and scattering mechanism of ZnSnN2. Journal of Alloys and Compounds, 779, pp. 237-243. (doi: 10.1016/j.jallcom.2018.11.239)

Cai, X.-M. et al. (2019) Fabricating ZnSnN2 with cosputtering. Surface and Coatings Technology, 359, pp. 169-174. (doi: 10.1016/j.surfcoat.2018.12.080)

Articles

Assi, D. S., Huang, H., Karthikeyan, V. , Theja, V. C.S., Merlyne de Souza, M. and Roy, V. A.L. (2024) Topological quantum switching enabled neuroelectronic synaptic modulators for brain computer interface. Advanced Materials, (doi: 10.1002/adma.202306254) (Early Online Publication)

Dehghani, P., Karthikeyan, V. , Tajabadi, A., Assi, D. S., Catchpole, A., Wadsworth, J., Leung, H. Y. and Roy, V. A.L. (2024) Rapid near-patient impedimetric sensing platform for prostate cancer diagnosis. ACS Omega, (doi: 10.1021/acsomega.4c00843) (Early Online Publication)

Theja, V. C.S., Karthikeyan, V. , Assi, D. S., Huang, H., Shek, C.-H. and Roy, V. A.L. (2023) Dispersion of InSb nanoinclusions in Cu3SbS4 for improved stability and thermoelectric efficiency. Advanced Energy and Sustainability Research, 4(11), 2300125. (doi: 10.1002/aesr.202300125)

Assi, D. S., Huang, H., Kandira, K. U., Alsulaiman, N. S., Theja, V. C. S., Abbas, H. , Karthikeyan, V. and Roy, V. A. L. (2023) Charge mediated Copper Iodide based artificial synaptic device with ultrahigh neuromorphic efficacy. Physica Status Solidi - Rapid Research Letters, 17(10), 2300191. (doi: 10.1002/pssr.202300191)

Theja, V. C. S., Assi, D. S., Huang, H., Alsulami, R. S., Chen, B. J., Chan, C.-H., Shek, C.-H., Karthikeyan, V. and Roy, V. A. L. (2023) 3D architectural MXene composite films for stealth terahertz shielding performance. Advanced Materials Interfaces, (doi: 10.1002/admi.202300440) (Early Online Publication)

Assi, D. S., Huang, H., Karthikeyan, V. , Theja, V. C.S., de Souza, M. M., Xi, N., Li, W. J. and Roy, V. A.L. (2023) Quantum topological neuristors for advanced neuromorphic intelligent systems. Advanced Science, 10(24), 2300791. (doi: 10.1002/advs.202300791) (PMID:37340871) (PMCID:PMC10460853)

Assi, D. S., Haris, M. P.U., Karthikeyan, V. , Kazim, S., Ahmad, S. and Roy, V. A.L. (2023) Low switching power neuromorphic perovskite devices with quick relearning functionality. Advanced Electronic Materials, 9(8), 2300285. (doi: 10.1002/aelm.202300285)

Tajabadi, A. M.A.A.S., Dehghani, P., Assi, D. S., Karthikeyan, V. , Huang, C.-B., Abbas, H. T. and Roy, V. A.L. (2023) Compact magnetic field amplification by tuned Lenz lens. IEEE Sensors Journal, (doi: 10.1109/JSEN.2023.3297254) (Early Online Publication)

Theja, V. C.S., Karthikeyan, V. , Nayak, S., Kandira, K. U., Assi, D. S., Kannan, V. and Roy, V. A.L. (2023) Facile composite engineering to boost thermoelectric power conversion in ZnSb device. Journal of Physics and Chemistry of Solids, 178, 111329. (doi: 10.1016/j.jpcs.2023.111329)

Theja, V. C. S., Karthikeyan, V. , Assi, D. S., Gopalan, S. and Roy, V. A. L. (2022) Probing the effect of MWCNT nanoinclusions on the thermoelectric performance of Cu3SbS4 composites. ACS Omega, 7(51), pp. 48484-48492. (doi: 10.1021/acsomega.2c06823) (PMID:36591112) (PMCID:PMC9798489)

Theja, V. C. S., Karthikeyan, V. , Assi, D. S. and Roy, V. A. L. (2022) Insights into the classification of nanoinclusions of composites for thermoelectric applications. ACS Applied Electronic Materials, 4(10), pp. 4781-4796. (doi: 10.1021/acsaelm.2c00617)

Hlaing, M. Z., Karthikeyan, V. , Wu, W., Chen, B. J., Ng, A. K., Chan, C.-H., De Souza, M. M. and Roy, V. A.L. (2022) 3D microstructured frequency selective surface based on carbonized polyimide films for terahertz applications. Advanced Optical Materials, 10(8), 2102178. (doi: 10.1002/adom.202102178)

Theja, V. C. S., Karthikeyan, V. , Yeung, C.-C., Venkatesh, S., Nayak, S. and Roy, V. A. L. (2022) Amorphous carbon nano-inclusions for strategical enhancement of thermoelectric performance in Earth-abundant Cu3SbS4. Journal of Alloys and Compounds, 900, 163433. (doi: 10.1016/j.jallcom.2021.163433)

Velmurugan, K. et al. (2022) A review of heat batteries based PV module cooling—case studies on performance enhancement of large-scale solar PV system. Sustainability, 14(4), 1963. (doi: 10.3390/su14041963)

Karthikeyan, V. , Theja, V. C.S., De Souza, M. M. and Roy, V. A.L. (2022) Hierarchically interlaced 2D copper iodide/MXene composite for high thermoelectric performance. Physica Status Solidi - Rapid Research Letters, 16(1), 2100419. (doi: 10.1002/pssr.202100419)

Karthikeyan, V. , Oo, S. L., Surjadi, J. U., Li, X., Theja, V. C.S., Kannan, V., Lau, S. C., Lu, Y., Lam, K.-H. and Roy, V. A.L. (2021) Defect engineering boosted ultrahigh thermoelectric power conversion efficiency in polycrystalline SnSe. ACS Applied Materials and Interfaces, 13(49), pp. 58701-58711. (doi: 10.1021/acsami.1c18194) (PMID:34851624)

Maniarasu, S., Karthikeyan, V. , Korukonda, T. B., Pradhan, S. C., Soman, S., Ramasamy, E. and Veerappan, G. (2021) Ambient processed perovskite sensitized porous TiO2 nanorods for highly efficient and stable perovskite solar cells. Journal of Alloys and Compounds, 884, 161061. (doi: 10.1016/j.jallcom.2021.161061)

Rekha, S. M. S., Karthikeyan, V. , Thuy, L. T. T., An Binh, Q., Techato, K., Kannan, V., Roy, V. A.L. , Sukchai, S. and Velmurugan, K. (2021) Efficient heat batteries for performance boosting in solar thermal cooking module. Journal of Cleaner Production, 324, 129223. (doi: 10.1016/j.jclepro.2021.129223)

Mannu, R. et al. (2021) Facile use of silver nanoparticles-loaded alumina/silica in nanofluid formulations for enhanced catalytic performance toward 4-nitrophenol reduction. International Journal of Environmental Research and Public Health, 18(6), 2994. (doi: 10.3390/ijerph18062994) (PMID:33803950) (PMCID:PMC7999000)

Vaithinathan, K. , Sundaram, G. A. and Anbalagan, K. (2021) New monomeric mixed-ligand complex of iron(III)-3-chloropyridine: Synthesis, structure, luminescence, electrochemical and magnetic properties. Journal of Molecular Structure, 1225, 129160. (doi: 10.1016/j.molstruc.2020.129160)

Mannu, R. et al. (2021) Polyethylene glycol coated magnetic nanoparticles: hybrid nanofluid formulation, properties and drug delivery prospects. Nanomaterials, 11(2), 440. (doi: 10.3390/nano11020440)

Lin Oo, S., Venkatesh, S., Karthikeyan, V. , Arava, C. M., Pathikonda, S., Yu, P. K. N., Lau, T. C. K., Chen, X. and Roy, V. A.L. (2021) Highly sensitive and cost-effective portable sensor for early gastric carcinoma diagnosis. Sensors, 21(8), 2639. (doi: 10.3390/s21082639)

Karthikeyan, V. , Surjadi, J. U., Wong, J. C.K., Kannan, V., Lam, K.-H. , Chen, X., Lu, Y. and Roy, V. A.L. (2020) Wearable and flexible thin film thermoelectric module for multi-scale energy harvesting. Journal of Power Sources, 455, 227983. (doi: 10.1016/j.jpowsour.2020.227983)

Karthikeyan, V. , Li, T., Medasani, B., Luo, C., Shi, D., Wong, J. C.K., Lam, K.-H. , Ling, F. C.C. and Roy, V. A.L. (2020) Defect and dopant mediated thermoelectric power factor tuning in β‐Zn 4 Sb 3. Advanced Electronic Materials, 6(4), 1901284. (doi: 10.1002/aelm.201901284)

Karthikeyan, V. , Arava, C. M., Hlaing, M. Z., Chen, B., Chan, C. H., Lam, K.-H. and Roy, V. A.L. (2020) Dislocation-induced ultra-low lattice thermal conductivity in rare earth doped β-Zn4Sb3. Scripta Materialia, 174, pp. 95-101. (doi: 10.1016/j.scriptamat.2019.08.037)

M., R., R., P., Karthikeyan, V. , Roy, V. A. L. , Gopalan, A.-I., Saianand, G., Kim, W.-J. and Kannan, V. (2020) A comparative evaluation of physicochemical properties and photocatalytic efficiencies of cerium oxide and copper oxide nanofluids. Catalysts, 10(1), 34. (doi: 10.3390/catal10010034)

Oo, S. L., Ilyas, A.-M., Karthikeyan, V. , Arava, C. M., Kong, E. Y., Yeung, C.-C., Chen, X., Yu, P. K.N. and Vellaisamy, R. A.L. (2020) Gating a single cell: a label-free and real-time measurement method for cellular progression. Analytical Chemistry, 92(2), pp. 1738-1745. (doi: 10.1021/acs.analchem.9b03136) (PMID:31904934)

KaniAmuthana, B., Vinotha, S., Vaithinathan, K. , Roy, V. A.L. and Thilakan, P. (2019) Influence of nitrogen dopant source on the structural, photoluminescence and electrical properties of ZnO thin films deposited by pulsed spray pyrolysis. Ceramics International, 45(18A), pp. 24324-24330. (doi: 10.1016/j.ceramint.2019.08.147)

Cai, X.-M., Wang, B., Ye, F., Vaithinathan, K. , Zeng, J.-J., Zhang, D.-P., Fan, P. and Roy, V.A.L. (2019) Tuning the photoluminescence, conduction mechanism and scattering mechanism of ZnSnN2. Journal of Alloys and Compounds, 779, pp. 237-243. (doi: 10.1016/j.jallcom.2018.11.239)

Cai, X.-M. et al. (2019) Fabricating ZnSnN2 with cosputtering. Surface and Coatings Technology, 359, pp. 169-174. (doi: 10.1016/j.surfcoat.2018.12.080)

Book Sections

Theja, V. C. S., Karthikeyan, V. , Musah, J.-D., Wu, C.-M. L. and Roy, V. A. L. (2022) Thermoelectric properties of sulfide and selenide-based materials. In: Dalapati, G. K., Wong, T. K. S., Kundu, S., Chakraborty, A. K. and Zhuk, S. (eds.) Sulfide and Selenide Based Materials for Emerging Applications: Sustainable Energy Harvesting and Storage Technology. Elsevier, pp. 293-328. ISBN 9780323998604 (doi: 10.1016/B978-0-323-99860-4.00009-5)

Conference Proceedings

Pires, T., Han, R., Karthikeyan, V. , Abohmra, A., Tahir, F., Abbas, H. , Imran, M. and Abbasi, Q. (2024) Hybrid Metal-Topological Insulator Terahertz Metasurface for Ultrasensitive Refractive Index Biosensing. In: 2024 IEEE International Symposium on Antennas and Propagation and ITNC-USNC-URSI Radio Science Meeting, Florence, Italy, 14-19 Jul 2024, (Accepted for Publication)

Pires, T., Han, R., Karthikeyan, V. , Abohmra, A., Tahir, F. A., Abbas, H. , Imran, M. and Abbasi, Q. (2023) Ultrahigh Sensitive Terahertz Metasurface with 2D MoS2 for Refractive Index Biosensing. In: 18th European Conference on Antennas and Propagation (EuCAP 2024), Glasgow, Scotland, 17-22 March 2024, (Accepted for Publication)