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Plasmonic metallic nanoparticles are coupled to the organic solar cells to overcome the trade-off between the light absorption and carrier collection. They are usually located inside or outside of the active layers. However, no detailed comparison was reported on the light absorption difference when nanoparticles are located inside or outside of the active layers. In this paper, we compare light-trapping...
Recently, interest in nano-manipulation using the evanescent wave generated by nano-objects has been growing, but the analyses of manipulation flexibility and performance haven't been solved. In this paper the near-field optical trap utilizing a tapered metalized probe used in NSOM is described in detail. By employing a generalization of the conservation law for momentum using three-dimensional FDTD...
Metal probe-based near-field tweezers can provide optical trapping and alignment of dielectric particles at nanometer scale. A finite difference time domain (FDTD) numerical method of solution is applied to optimize the metal probe geometry for better nano-manipulation. Calculations for copper probes of truncated, infinite and finite rectangular pyramid are considered. The calculations show that sharper...
In this paper we explore the possibility to accomplish field enhancement in the visible range in a photonic band gap cavity inserted in a Bragg waveguide, assisted by a silver metal groove. The investigation we carried out shows how the resonant mode can be localized in dielectric region under a Bragg grating; a thorough evaluation of some characteristic parameters also allows to determine whether...
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