纳米颗粒近场空间光谱散射建模与显微成像分析
发布时间:2018-05-30 16:46
本文选题:近场散射 + 空间光谱 ; 参考:《光谱学与光谱分析》2017年09期
【摘要】:用非直观偏振参数显微成像,即采用在传统显微光路中插入模式化装置,通过拟合过滤后对所得数据反演成像,通过对金属纳米颗粒在近场空间散射光谱分析,来解决空间散射现象。用非直观偏振参数显微成像与传统直观成像做对比,并通过时域有限差分法建模仿真,来描述近场直观与非直观散射光谱的差异,对比结果发现,非直观偏振参数显微反演成像的分辨率比直观成像更高,不但能够清晰的探测到纳米颗粒的形状和电场分布,而且比直观成像获得更广泛的空间散射光谱。
[Abstract]:Non-intuitive polarization parameter microimaging is used, that is, by inserting a modularization device into the traditional microscopic optical path, the obtained data is inversely imaged by fitting and filtering, and the scattering spectrum of metal nanoparticles in near-field space is analyzed. To solve the spatial scattering phenomenon. Compared with traditional imaging, the difference between near-field and non-visual scattering spectra is described by modeling and simulation by finite difference time-domain (FDTD) method. The resolution of non-intuitive polarization parameter micro-inversion imaging is higher than that of visual imaging, which can not only clearly detect the shape and electric field distribution of nanoparticles, but also obtain more extensive spatial scattering spectrum than visual imaging.
【作者单位】: 天津农学院工程技术学院;北京理工大学光电成像技术与系统教育部重点实验室;南京理工大学电子工程与光电技术学院;
【基金】:国家自然科学基金项目(61271427)资助
【分类号】:O657.3
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本文编号:1956007
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