2014/09/06 by Martín Prieto, Martin Prieto, Raul Arenal +13
Engineering · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Gold and Silver Nanoparticles Synthesis and Applications #Materials Science (cond-mat.mtrl-sci) #Nanoparticle-Based Drug Delivery #Plasmonic and Surface Plasmon Research #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.1409.2012
arxiv created 2014/09/06 · openalex publication_date 2014/09/06 · arxiv updated 2014/09/09 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The optical and morphological properties of hollow gold nanoparticles (HGNPs) can be finely modified by employing Poly-L-Lysine hydrobromide (PLL), an homo poly aminoacid of the L-lysine, used as reducer and stabilizer. We investigate locally the plasmonic response of these nanostructures by electron energy loss spectroscopy (EELS). The plasmon excitations are interpreted by discrete dipolar approximation (DDA) simulations. We demonstrate that this controlled top-down morphological modification a fine tuning of the optical response is possible. Unlike the traditional lithographic techniques, this has been achieved in a controlled manner using wet chemistry, enabling the potential use of these nanostructures for a broad range of plasmonic applications, including biomedicine, catalysis and quantum communications.