F.  Ram, Gudadhe, A., Vijayakanth, T., Aherrao, S., Borkar, V., Boomishankar, R., and Shanmuganathan, K., ?Nanocellulose reinforced flexible composite nanogenerators with enhanced vibrational energy harvesting and sensing properties?, vol. 2, no. 7, pp. 2550-2562, 2020.