title: Optical properties of Ag hemisphere-like nanoparticles.
abstract: We investigated the optical properties of Ag hemisphere-like nanoparticles. The nanoparticles were prepared by using magnetron sputtering and post-thermal annealing. The scanning-electron microscopy images reveal that hemisphere-like nanoparticles were successfully produced. The transmission spectra exhibit the surface plasmon resonance effect. From the spatial intensity distributions obtained by solving Maxwell equations using the three-dimensional, finite-difference time-domain method, we found that there is strong confinement of the optical field near the nanoparticle. This optical confinement makes it easy to exhibit the plasmon resonance effect.
authors: Plasma Bioscience Research Center Kwangwoon University, Seoul 139-701, Korea.
authors: Geon Joon
authors: GJ
authors: Lee
authors: Jin Joo
authors: JJ
authors: Kim
authors: Chang Kwon
authors: CK
authors: Hwangbo
authors: Jihye
authors: J
authors: Kim
authors: Inkyu
authors: I
authors: Park
authors: Young Pak
authors: YP
authors: Lee
mesh_terms: D008027:Light; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D054118:Nanospheres / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D012031:Refractometry; D012542:Scattering, Radiation; D012834:Silver / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D012834:Silver