Controlling Optically Driven Atomic Migration Using Crystal-Facet Control in Plasmonic Nanocavities.

ABSTRACT: Plasmonic nanoconstructs are widely exploited to confine light for applications ranging from quantum emitters to medical imaging and biosensing. However, accessing extreme near-field confinement using the surfaces of metallic nanoparticles often induces permanent structural changes from light, even at low intensities. Here, we report a robust and simple technique to exploit crystal facets and their atomic boundaries to prevent the hopping of atoms along and between facet planes. Avoiding X-ray or electron microscopy techniques that perturb these atomic restructurings, we use elastic and inelastic light scattering to resolve the influence of crystal habit. A clear increase in stability is found for {100} facets with steep inter-facet angles, compared to multiple atomic steps and shallow fac

SUBMITTER: Xomalis A 

PROVIDER: S-EPMC7458481 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature