Optimizing the optical absorption coefficient of a core/shell quantum dot near a bimetallic nanoparticle Naser Zamani, Alireza Keshavarz and Hamid Nadgaran Eur. Phys. J. D, 74 6 (2020) 120 Published online: 16 June 2020 DOI: 10.1140/epjd/e2020-100644-2