Items where Author is "Kumar, R."
Article
Joseph, E., Meena, C. K., Kumar, R. , Sebastian, M., Suttle, C. M. 
ORCID: 0000-0001-8694-195X, Congdon, N., Sethu, S., Murthy, G. V. S. & REACH Research Group (2022).
Prevalence of refractive errors among school-going children in a multistate study in India.
British Journal of Ophthalmology,
doi: 10.1136/bjo-2022-322123
Kumar, R., Nguyen, H., Rente, B. , Tan, C., Sun, T. & Grattan, K. T. V. ORCID: 0000-0003-2250-3832 (2022).
A Portable ‘Plug-and-Play’ Fibre Optic Sensor for In-Situ Measurements of pH Values for Microfluidic Applications.
Micromachines, 13(8),
1224.
doi: 10.3390/mi13081224
Kumar, R., Binetti, L., Nguyen, T.H. , Alwis, L. S. M., Sun, T. ORCID: 0000-0003-3861-8933 & Grattan, K. T. V. ORCID: 0000-0003-2250-3832 (2020).
Optical fibre thermometry using ratiometric green emission of an upconverting nanoparticle-polydimethylsiloxane composite.
Sensors and Actuators A: Physical, 312,
112083.
doi: 10.1016/j.sna.2020.112083
Kumar, R., Binetti, L., Nguyen, H. T. , Alwis, L. S. M., Agrawal, A., Sun, T. ORCID: 0000-0003-3861-8933 & Grattan, K. T. V. ORCID: 0000-0003-2250-3832 (2019).
Determination of the Aspect-ratio Distribution of Gold Nanorods in a Colloidal Solution using UV-visible absorption spectroscopy.
Scientific Reports, 9,
17469.
doi: 10.1038/s41598-019-53621-4
Dhara, P., Kumar, R., Binetti, L. , Nguyen, H., Alwis, L., Sun, T. ORCID: 0000-0003-3861-8933 & Grattan, K. T. V. ORCID: 0000-0003-2250-3832 (2019).
Optical fiber-based heavy metal detection using the Localized Surface Plasmon Resonance technique.
IEEE Sensors Journal, 19(19),
pp. 8720-8723.
doi: 10.1109/JSEN.2019.2921701
Dissanayake, K. P. W., Dhara, P., Kumar, R. , Ghosh, S. ORCID: 0000-0002-1992-2289, Nguyen, T.H., Sun, T. ORCID: 0000-0003-3861-8933 & Grattan, K. T. V. ORCID: 0000-0003-2250-3832 (2019).
Fibre optic chemical sensors for environmental monitoring using sensitive nano-material coatings.
Asian Journal of Physics, 28(7-9),
pp. 567-578.
Dissanayake, K. P. W., Kumar, R., Nguyen, T.H. , Wu, W. ORCID: 0000-0003-1462-6402, Sun, T. ORCID: 0000-0003-3861-8933 & Grattan, K. T. V. ORCID: 0000-0003-2250-3832 (2018).
Stability of Graphene Oxide encapsulated Gold Nanorods for optical sensing purposes.
Journal of Physics: Conference Series, 1065(3),
0.032021.
doi: 10.1088/1742-6596/1065/3/032021
Kumar, R., Nguyen, T.H., Agrawal, A. , Sun, T. ORCID: 0000-0003-3861-8933 & Grattan, K. T. V. ORCID: 0000-0003-2250-3832 (2018).
Estimation of the aspect-ratio distribution in chemically synthesized gold nanorods solution using UV-visible absorption spectroscopy.
Journal of Physics : Conference Series, 1065,
32023.
doi: 10.1088/1742-6596/1065/3/032023
Thesis
Kumar, R. (2020). Development of novel optical fibre sensors based on upconverting and gold nanoparticles. (Unpublished Doctoral thesis, City, University of London)