Extinction and scattering of metallic nanoparticles in ordered and random arrays

Abstract

Here we investigate the interaction of metallic nanoparticles which support localized surface plasmon resonances (LSPR). We use dark-field spectroscopy and normal-incidence transmission spectroscopy to investigate the scattering and extinction of metallic nanoparticles on their own and in both ordered and random arrays. We compare experimental results with theory based on the coupled dipole approximation (CDA) and the finite-element method (FEM). CDA is used to demonstrate the ability to indirectly measure the extinction of an individual particle by considering a sparse, disordered, finite array of particles.

Theories of central engine for long gamma-ray bursts

“…So high-redshift observations will be crucial to unveil the existence of Type-III collapsars. There are several missions focusing on survey of high-redshift universe by GRBs, such as JANUS [335], Lobster [336], HiZ-GUNDAM [337]. Follow-up by ground based telescopes such as the thirty-meter telescope (TMT) will also be very important [338].…”