Effect of volume fractional change of nanoparticles on surface plasmon polaritonZahid Ullah, Muhammad Usman, Prakash Kanjariya, Asha Rajiv, Aman Shankhyan, Sachin Jaidka and A. S. Madhusadan AcharyuluEPL, 149 5 (2025) 55001DOI: https://doi.org/10.1209/0295-5075/ada969