Naresh Varnakavi | Biosensors | Best Researcher Award Published on 13/09/2025 by ScienceFather Dr. Naresh Varnakavi | Biosensors | Best Researcher Award Kookmin University | South Korea Dr. V. Naresh is a Visiting Research Scientist at the Photonics Laboratory, Department of Electrical and Computer Engineering, University of Washington, Seattle, where he collaborates with Prof. Lih Y. Lin on the development of advanced photonic and optoelectronic materials. He earned his Ph.D. in Physics from Sri Venkateswara University, Tirupati, where his doctoral research explored dielectric, magnetic, and luminescent properties of rare-earth and transition metal-doped glasses. He also holds master’s and bachelor’s degrees in Physics and Mathematics from Sri Venkateswara University and Andhra Loyola College. Over the course of his career, Dr. Naresh has conducted postdoctoral research at Kookmin University in South Korea, the Chinese Academy of Sciences in Fuzhou, and the Gwangju Institute of Science and Technology, gaining extensive expertise in nanomaterials, perovskite quantum dots, scintillators, and rare-earth phosphors. His research interests span the synthesis and compositional engineering of perovskite nanocrystals, development of lead-free perovskites and double perovskites, luminescent phosphors, and up-conversion nanoparticles. These materials are studied for their potential in energy-efficient lighting, X-ray scintillators, laser devices, photocatalysis, biosensors, and anti-counterfeiting applications. He is proficient in a wide range of advanced synthesis techniques and characterization tools, including electron microscopy, X-ray diffraction, optical spectroscopy, and dielectric measurements. Dr. Naresh has authored numerous high-impact publications and his work has been widely cited, including a highly regarded review on nanostructured biosensors. In addition, he is a co-inventor of a U.S. patent on exciton-polariton metasurfaces. Through his innovative research, he continues to contribute to the advancement of materials for next-generation photonic, electronic, and biomedical technologies. Profile: Google Scholar Featured Publications Naresh, V., Lee, N. (2021). A review on biosensors and recent development of nanostructured materials-enabled biosensors. Sensors, 21(4), 1109. Naresh, V., Lee, N. (2020). Zn (II)-doped cesium lead halide perovskite nanocrystals with high quantum yield and wide color tunability for color-conversion light-emitting displays. ACS Applied Nano Materials, 3(8), 7621–7632. Naresh, V., Kim, B.H., Lee, N. (2021). Synthesis of CsPbX3 (X = Cl/Br, Br, and Br/I)@SiO2/PMMA composite films as color-conversion materials for achieving tunable multi-color and white light emission. Nano Research, 14(4), 1187–1194. Naresh, V., Cha, P.R., Lee, N. (2024). Cs2NaGdCl6:Tb3+─A highly luminescent rare-earth double perovskite scintillator for low-dose X-ray detection and imaging. ACS Applied Materials & Interfaces, 16(15), 19068–19080. Naresh, V., Lee, N. (2021). Dy3+/Pr3+ co-doped fluoro-borosilicate glasses: energy transfer induced color-tunable luminescence. Materials Research Bulletin, 142, 111381. Naresh, V., Singh, S., Soh, H., Lee, J., Lee, N. (2023). Dual-phase CsPbBr3–CsPb2Br5 perovskite scintillator for sensitive X-ray detection and imaging. Materials Today Nano, 23, 100364. Naresh, V., Cho, M.K., Cha, P.R., Lee, N. (2023). Polar-solvent-free sonochemical synthesis of Mn(II)-doped CsPbCl3 perovskite nanocrystals for dual-color emission. ACS Applied Nano Materials, 6(6), 4693–4706. Naresh, V., Adusumalli, V., Park, Y.I., Lee, N. (2022). NIR triggered NaYF4:Yb3+, Tm3+@NaYF4/CsPb(Br1-x/Ix)3 composite for up-converted white-light emission and dual-model anti-counterfeiting applications. Materials Today Chemistry, 23, 100752.
Dr. V. Naresh is a Visiting Research Scientist at the Photonics Laboratory, Department of Electrical and Computer Engineering, University of Washington, Seattle, where he collaborates with Prof. Lih Y. Lin on the development of advanced photonic and optoelectronic materials. He earned his Ph.D. in Physics from Sri Venkateswara University, Tirupati, where his doctoral research explored dielectric, magnetic, and luminescent properties of rare-earth and transition metal-doped glasses. He also holds master’s and bachelor’s degrees in Physics and Mathematics from Sri Venkateswara University and Andhra Loyola College. Over the course of his career, Dr. Naresh has conducted postdoctoral research at Kookmin University in South Korea, the Chinese Academy of Sciences in Fuzhou, and the Gwangju Institute of Science and Technology, gaining extensive expertise in nanomaterials, perovskite quantum dots, scintillators, and rare-earth phosphors. His research interests span the synthesis and compositional engineering of perovskite nanocrystals, development of lead-free perovskites and double perovskites, luminescent phosphors, and up-conversion nanoparticles. These materials are studied for their potential in energy-efficient lighting, X-ray scintillators, laser devices, photocatalysis, biosensors, and anti-counterfeiting applications. He is proficient in a wide range of advanced synthesis techniques and characterization tools, including electron microscopy, X-ray diffraction, optical spectroscopy, and dielectric measurements. Dr. Naresh has authored numerous high-impact publications and his work has been widely cited, including a highly regarded review on nanostructured biosensors. In addition, he is a co-inventor of a U.S. patent on exciton-polariton metasurfaces. Through his innovative research, he continues to contribute to the advancement of materials for next-generation photonic, electronic, and biomedical technologies. Profile: Google Scholar Featured Publications Naresh, V., Lee, N. (2021). A review on biosensors and recent development of nanostructured materials-enabled biosensors. Sensors, 21(4), 1109. Naresh, V., Lee, N. (2020). Zn (II)-doped cesium lead halide perovskite nanocrystals with high quantum yield and wide color tunability for color-conversion light-emitting displays. ACS Applied Nano Materials, 3(8), 7621–7632. Naresh, V., Kim, B.H., Lee, N. (2021). Synthesis of CsPbX3 (X = Cl/Br, Br, and Br/I)@SiO2/PMMA composite films as color-conversion materials for achieving tunable multi-color and white light emission. Nano Research, 14(4), 1187–1194. Naresh, V., Cha, P.R., Lee, N. (2024). Cs2NaGdCl6:Tb3+─A highly luminescent rare-earth double perovskite scintillator for low-dose X-ray detection and imaging. ACS Applied Materials & Interfaces, 16(15), 19068–19080. Naresh, V., Lee, N. (2021). Dy3+/Pr3+ co-doped fluoro-borosilicate glasses: energy transfer induced color-tunable luminescence. Materials Research Bulletin, 142, 111381. Naresh, V., Singh, S., Soh, H., Lee, J., Lee, N. (2023). Dual-phase CsPbBr3–CsPb2Br5 perovskite scintillator for sensitive X-ray detection and imaging. Materials Today Nano, 23, 100364. Naresh, V., Cho, M.K., Cha, P.R., Lee, N. (2023). Polar-solvent-free sonochemical synthesis of Mn(II)-doped CsPbCl3 perovskite nanocrystals for dual-color emission. ACS Applied Nano Materials, 6(6), 4693–4706. Naresh, V., Adusumalli, V., Park, Y.I., Lee, N. (2022). NIR triggered NaYF4:Yb3+, Tm3+@NaYF4/CsPb(Br1-x/Ix)3 composite for up-converted white-light emission and dual-model anti-counterfeiting applications. Materials Today Chemistry, 23, 100752.