Remarkably enhanced surface plasmon resonance absorption of Cu nanoparticles in SiO2 by post Zn ion implantationGuangyi Jia, Jun Wang, Lihong Zhang, Huixian Liu, Rong Xu and Changlong LiuEPL, 101 5 (2013) 57005DOI: https://doi.org/10.1209/0295-5075/101/57005