title: Near-field interaction of two-dimensional high-permittivity spherical particle arrays on substrate in the Mie resonance scattering domain.
abstract: We describe theoretical and experimental results on near-field interaction of two-dimensionally (2D) arrayed, high-permittivity spherical particles on a substrate in the Mie resonance scattering domain for surface nano-patterning processing. When a touching particle pair of Mie resonance particles on the substrate is considered, an electromagnetic mode different from the single particle mode is excited inside the particles, resulting in an intensity enhancement in a gap between two hotspots at particle-substrate contact points. As for 2D hexagonal close-packed particle arrays on the substrate, the refractive index of particle exhibiting a maximal enhancement factor for the 2D particle arrays is found to be shifted from the Mie resonance conditions for the single particle system.
authors.affiliation: School of Integrated Design Engineering, Keio University, Kohoku-ku, Yokohama-shi, Japan.
authors.forename: Yuto
authors.initials: Y
authors.lastname: Tanaka
authors.forename: Go
authors.initials: G
authors.lastname: Obara
authors.forename: Akira
authors.initials: A
authors.lastname: Zenidaka
authors.forename: Nikolay N
authors.initials: NN
authors.lastname: Nedyalkov
authors.forename: Mitsuhiro
authors.initials: M
authors.lastname: Terakawa
authors.forename: Minoru
authors.initials: M
authors.lastname: Obara
mesh_terms: D003198:Computer Simulation; D004574:Electromagnetic Fields; D008962:Models, Theoretical; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D009391:Nephelometry and Turbidimetry / Q000379:methods*; D010316:Particle Size; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation