納米顆粒近場(chǎng)空間光譜散射建模與顯微成像分析
發(fā)布時(shí)間:2018-05-30 16:46
本文選題:近場(chǎng)散射 + 空間光譜 ; 參考:《光譜學(xué)與光譜分析》2017年09期
【摘要】:用非直觀(guān)偏振參數(shù)顯微成像,即采用在傳統(tǒng)顯微光路中插入模式化裝置,通過(guò)擬合過(guò)濾后對(duì)所得數(shù)據(jù)反演成像,通過(guò)對(duì)金屬納米顆粒在近場(chǎng)空間散射光譜分析,來(lái)解決空間散射現(xiàn)象。用非直觀(guān)偏振參數(shù)顯微成像與傳統(tǒng)直觀(guān)成像做對(duì)比,并通過(guò)時(shí)域有限差分法建模仿真,來(lái)描述近場(chǎng)直觀(guān)與非直觀(guān)散射光譜的差異,對(duì)比結(jié)果發(fā)現(xiàn),非直觀(guān)偏振參數(shù)顯微反演成像的分辨率比直觀(guān)成像更高,不但能夠清晰的探測(cè)到納米顆粒的形狀和電場(chǎng)分布,而且比直觀(guān)成像獲得更廣泛的空間散射光譜。
[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.
【作者單位】: 天津農(nóng)學(xué)院工程技術(shù)學(xué)院;北京理工大學(xué)光電成像技術(shù)與系統(tǒng)教育部重點(diǎn)實(shí)驗(yàn)室;南京理工大學(xué)電子工程與光電技術(shù)學(xué)院;
【基金】:國(guó)家自然科學(xué)基金項(xiàng)目(61271427)資助
【分類(lèi)號(hào)】:O657.3
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本文編號(hào):1956007
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