本文關(guān)鍵詞：銀納米結(jié)構(gòu)的制備、SPP激發(fā)與傳播損耗的研究　出處：《南京大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 表面等離子體激元 銀納米線 表面等離子體激元激發(fā) 傳播損耗

【摘要】：表面等離子體極化激元(SPPs)是入射光與金屬表面電子相互耦合,引起金屬表面自由電子振動(dòng),并在金屬與介質(zhì)材料交界面產(chǎn)生傳播的電磁波。表面等離子體極化激元能將光局域到亞波長(zhǎng)尺度的空間中進(jìn)行傳播。今年來(lái),對(duì)于SPP的研究發(fā)現(xiàn)其在生物、環(huán)境、光學(xué)等領(lǐng)域都有很廣闊的應(yīng)用前景。而一維納米線是研究SPP的基本結(jié)構(gòu)之一�；瘜W(xué)方法合成的銀納米線的表面等離子體極化激元能夠突破衍射極限,將光波導(dǎo)局域在亞波長(zhǎng)尺寸中傳播。銀納米線表面SPP在制備光學(xué)器件上有很強(qiáng)的應(yīng)用前景�；谝陨显�,從實(shí)驗(yàn)中制備具有良好形貌的銀納米線以及研究SPP在銀納米線上的傳播損耗十分重要。論文中總結(jié)了基于水熱合成法制備銀納米線的具體實(shí)驗(yàn)過(guò)程,探究了反應(yīng)溫度、反應(yīng)時(shí)間對(duì)制備銀納米線的影響。重點(diǎn)探明了表面活性劑PVP在制備銀納米線的作用。研究了銀納米線表面等離子體激元的常用的激發(fā)方式。在實(shí)驗(yàn)中采用透鏡耦合和光纖耦合激發(fā)兩種方法激發(fā)銀納米線表面SPP。解決了光纖耦合激發(fā)方法中需要解決的激光耦合如光纖和光纖拉錐等工藝問(wèn)題。并比較了兩種激發(fā)方式各自的優(yōu)劣。利用光纖耦合激發(fā)方式直接測(cè)量SPP在銀納米線上的損耗,進(jìn)行了實(shí)驗(yàn)數(shù)據(jù)與模擬曲線的比較。制備的銀納米線上SPP的傳播長(zhǎng)度在8.5～9.5μm左右。分析了為何相同直徑下,不同時(shí)刻測(cè)量的銀納米線傳播長(zhǎng)度不同。進(jìn)一步分析發(fā)現(xiàn),銀納米線表面形貌影響了SPP的傳播長(zhǎng)度。
[Abstract]:Surface plasmon polaritons (SPPs) is the incident light and electron metal surface coupling caused by electrons in metal surface vibration, and electromagnetic waves in the dielectric and metal material interface propagation. Surface plasmon polaritons can be localized to the optical sub wavelength scales of space travel. This year, for SPP the study found that the biological, environmental, optics and other fields have a very broad application prospect. The nanowire is one of the basic structure of SPP. The chemical synthesis of silver nanowires by surface plasmon polaritons can break the diffraction limit, the optical waveguide propagation in local subwavelength size. Silver nanowires the surface of SPP in the preparation has a strong application prospects of optical devices. Based on the above principle, from the experiment preparation with good morphology of silver nanowires and the study of SPP in silver nanowires on the transmission loss of ten Important. The paper summarizes the specific experimental process of hydrothermal synthesis of silver nanowires based on the study of reaction temperature, reaction time effects of silver nanowires on the key. Proved the surfactant PVP in the preparation of silver nanowires. The silver nanowires surface plasmon excitation the commonly used laser coupling excitation excitation mode. Two kinds of methods to stimulate silver nanowire surface SPP. solves the fiber coupling excitation method to solve the such as fiber and fiber taper process problems by using lens coupling and fiber coupling in the experiment. And comparing two kinds of excitation modes respectively. By using the fiber coupled excitation mode direct measurement of SPP in nano silver nanowires on the loss, compared to the experimental data and simulation curves. The preparation of silver nanowires on SPP propagation length in 8.5 ~ 9.5 m. The paper analyses the reason why the same diameter under different The length of the silver nanowires measured at the time is different. Further analysis shows that the surface morphology of the silver nanowires affects the propagation length of SPP.

【學(xué)位授予單位】：南京大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB383.1

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