Optical properties of two-dimensional and three-dimensional arrays of noble metal nanoparticles by the discrete dipole approximation method

Two-Dimensional Nanoparticle Cluster Formation in Supercritical Fluid CO2

“…Among metallic spherical nanoparticles assembled in close proximity to each other in 2D arrays, the optical aspects of plasmon coupling occurring through the near-field interactions have been investigated. For the silver 2D array system, it is evident that the longitudinal and transverse modes of the plasmon resonance phenomena observed are well-separated when p-polarized incident light is applied, but it is not the case for both copper and gold . Stable 2D assemblies of Au NP assemblies on different substrates under ambient conditions exhibit electrocatalytic activity toward methanol oxidation reaction, which is relevant for direct methanol fuel cells .…”

“…5 Calculations using the discrete dipole approximation method have been performed for 2D close-packed array of three noble metals (silver, copper, and gold). 6 Among metallic spherical nanoparticles assembled in close proximity to each other in 2D arrays, the optical aspects of plasmon coupling occurring through the near-field interactions have been investigated. For the silver 2D array system, it is evident that the longitudinal and transverse modes of the plasmon resonance phenomena observed are wellseparated when p-polarized incident light is applied, but it is not the case for both copper and gold.…”

“…For the silver 2D array system, it is evident that the longitudinal and transverse modes of the plasmon resonance phenomena observed are wellseparated when p-polarized incident light is applied, but it is not the case for both copper and gold. 6 Stable 2D assemblies of Au NP assemblies on different substrates under ambient conditions exhibit electrocatalytic activity toward methanol oxidation reaction, which is relevant for direct methanol fuel cells. 7 Collier et al 8 reported an insulator-to-metal transition by tuning the distance between functionalized Ag quantum dots (QDs).…”

“…The strong coupling between the waveguide resonance mode and the particle plasmon resonance of the MPCs indicates the success of the fabrication method, which shows potential applications in optoelectronic devices and sensors . Calculations using the discrete dipole approximation method have been performed for 2D close-packed array of three noble metals (silver, copper, and gold) . Among metallic spherical nanoparticles assembled in close proximity to each other in 2D arrays, the optical aspects of plasmon coupling occurring through the near-field interactions have been investigated.…”