本文關(guān)鍵詞： 陰極熒光 表面等離激元 亞波長 金屬納米結(jié)構(gòu)　出處：《物理學(xué)報》2017年14期 　論文類型：期刊論文

【摘要】：表面等離激元以其獨特的光學(xué)性質(zhì)廣泛應(yīng)用于納米尺度的局域電磁場增強(qiáng)、超高分辨成像及微弱光電探測.陰極熒光是電子與物質(zhì)相互作用而產(chǎn)生的光學(xué)響應(yīng),利用電子束激發(fā)金屬納米結(jié)構(gòu)能夠?qū)崿F(xiàn)局域等離激元共振,并在亞波長尺度實現(xiàn)對共振模式的調(diào)控,具有超高空間分辨的成像特點.陰極熒光探測通常結(jié)合掃描電子顯微鏡或透射電子顯微鏡而實現(xiàn),目前己被應(yīng)用于表面等離激元的探測及共振模式的分析.本文從陰極熒光物理機(jī)理出發(fā),綜述了單一金屬納米結(jié)構(gòu)和金屬耦合結(jié)構(gòu)的等離激元共振模式陰極熒光研究進(jìn)展,并總結(jié)了陰極熒光與角分辨、時間分辨以及電子能量損失譜等關(guān)鍵技術(shù)相結(jié)合的應(yīng)用,進(jìn)一步分析了其面臨的關(guān)鍵問題,最后展望了陰極熒光等離激元研究方向.
[Abstract]:Surface isoexcitators are widely used in nanoscale local electromagnetic field enhancement, ultra-high resolution imaging and weak photoelectric detection due to their unique optical properties. Cathode fluorescence is the optical response caused by the interaction between electrons and matter. Using electron beam to excite the metal nanostructures can realize the local isobaric resonance and control the resonance mode at the sub-wavelength scale. Cathode fluorescence detection is usually realized by combining scanning electron microscope (SEM) or transmission electron microscope (TEM). At present, it has been applied to the detection of surface isoexcitators and the analysis of resonance modes. In this paper, we proceed from the physical mechanism of cathodic fluorescence. In this paper, the research progress of single metal nanostructure and metal coupling structure in isoexciton resonant mode cathodoluminescence is reviewed, and the cathodic fluorescence and angular resolution are also summarized. With the application of time resolution and electron energy loss spectroscopy, the key problems are analyzed. Finally, the research direction of cathode fluorescence isopherons is prospected.
【作者單位】： 北京大學(xué)物理學(xué)院人工微結(jié)構(gòu)和介觀物理國家重點實驗室;
【基金】：國家重點基礎(chǔ)研究發(fā)展計劃(批準(zhǔn)號:2017YFA0205700,2015CB932403,2017YFA0206000) 國家自然科學(xué)基金(批準(zhǔn)號:61422501,11674012,11374023,61176120,61378059,61521004) 北京市自然科學(xué)基金(批準(zhǔn)號:L140007) 教育部全國優(yōu)秀博士學(xué)位論文專項基金(批準(zhǔn)號:201420)資助的課題~~
【分類號】：O441;TB383.1
【正文快照】： 1引言 類似于光和物質(zhì)的相互作用,當(dāng)電子入射到物質(zhì)表面時,其較T嫉哪芰靠梢越鎦駛繾蛹し⒌礁吣薌，

本文編號：1478300