17 November 2016 Optical resolution improvement by nanoparticle's amplitude and phase pattern
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Optical detection of nanoparticle with ultra-high sensitivity plays an important role in bio- / nano- and their relative research fields. In our recently developed method, each single particle exhibits unique 4-lobes pattern both in the amplitude and phase images respectively, based on which we explored the possibility of resolution improvement by a particle pair. In this paper two polystyrene beads at the diameter of 100nm were employed with the gap distance ranging from 100-400nm. The amplitude and phase images of the particle pair were simulated by FDTD solver. The images are sensitive to geometrical parameters of the two particles, such as gap distance and direction. The simulation results lead to a resolution of 100nm.
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Xin Hong, Xin Hong, Xiaoyaun Sun, Xiaoyaun Sun, } "Optical resolution improvement by nanoparticle's amplitude and phase pattern", Proc. SPIE 10027, Nanophotonics and Micro/Nano Optics III, 1002716 (17 November 2016); doi: 10.1117/12.2244485; https://doi.org/10.1117/12.2244485

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