Plasmon coupling between silver nanoparticles: Transition from the classical to the quantum regime

Safer-by-design biocides made of tri-thiol bridged silver nanoparticle assemblies

“…This phenomenon is explained by the formation of a non-symmetric dipole and is due to nanoparticles in contact without interpenetration between them. 15 These results suggested that L 3S induced an AgNP agglomeration-like mechanism, which is confirmed by the time-dependent increase of the hydrodynamic diameter of the species in solution, reaching about 250 nm with a homogeneous distribution after 1 h of reaction and more than 1 mm in a heterogeneous distribution after 75 min (Fig. 1d).…”

Highly efficient plasmon-mediated electron injection into cerium oxide from embedded silver nanoparticles

“…We have ruled out the second possibility because the average distance between the Ag NPs in our samples, estimated using the measured deposited amount of NPs (see Methods) and their average size, is too large to induce an extended plasmon resonance (see Supporting Information, Figure S5). 48,49 The STEM images in Figure 1 show the presence of a fraction of anisotropically shaped NPs formed by the coalescence of individual Ag NPs during the deposition process. We tentatively ascribe the presence of two peaks in the Ag@CeO2 absorbance spectra to the NP anisotropy.…”

Electron Energy‐Loss Spectroscopy of Spatial Nonlocality and Quantum Tunneling Effects in the Bright and Dark Plasmon Modes of Gold Nanosphere Dimers

“…Therefore, a lot of photonic effects benefiting from strong local fields can be further strengthened by plasmonic dimers . Thirdly, the strong Coulomb interaction between the plasmon‐induced surface charges at the metal surfaces near the gap makes plasmonic dimers excellent candidates for exploring some quantum mechanical effects such as spatial nonlocality and electron tunneling . Regarding these optical characteristics and applications of plasmonic dimers, one may find that the gap between the coupled nanoparticles plays a vital role.…”