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搜索结果: 1-15 共查到光学 Raman相关记录28条 . 查询时间(0.075 秒)
The XXV International Conference on Raman Spectroscopy (ICORS2016) aims to bring together experts from different fields to discuss the frontiers of Raman spectroscopy. The Conference will provide an e...
We study Raman scattering in active media placed in proximity of different types of metal nanostructures, at wavelengths that display either Fabry-Perot or plasmonic resonances, or a combination of bo...
Through a simple room-temperature photoreduction process, this letter conformally replicates 3D submicrometer structures of wing scales from two butterfly species into Ag to generate practical surface...
Abstract: In this manuscript we report experimental demonstration of nonlinear frequency conversion at several optical frequencies in a whispering-gallery mode resonator (WGMR). Due to the enhancement...
Abstract: A commercial single laser line Raman spectrometer is modified to accommodate multiline and tunable dye lasers, thus combining the high sensitivity of such single monochromator systems with b...
Through a simple room-temperature photoreduction process, this letter conformally replicates 3D submicrometer structures of wing scales from two butterfly species into Ag to generate practical surface...
High-quality polycrystalline samples of CaIr1-xPtxO3 (x = 0.3, 0.5, 0.7) and CaIr0.5Rh0.5O3 have been obtained at a pressure of 15 GPa, and high-pressure Raman studies on CaIr0.5Pt0.5O3 and room-press...
Since its isolation from graphite,1 graphene has drawn a lot of experimental and theoretical research. These efforts have been mostly in pursuit of various applications such as electronics,2 sensors,3...
We report a study of graphene and graphene field effect devices after exposure to a series of short pulses of oxygen plasma. We present data from Raman spectroscopy, back-gated field-effect and magnet...
We synthesize large-area graphene via atmospheric-pressure (AP) chemical vapor deposition (CVD) on copper, and transfer to SiO2 wafers. In contrast to low-pressure (LP) CVD on copper, optical contra...
天然、Fe-C(H)系及Ni-C系高温高压合成金刚石的晶体形态、Raman光谱及PL谱研究结果表明:Fe-C(H)系高温高压合成金刚石多为类似于天然金刚石的八面体形态,Ni-C系高温高压合成金刚石的晶体形态多为六八面体;天然金刚石的品级最佳、所含缺陷最少,Fe-C(H)系高温高压合成金刚石次之,Ni-C系高温高压合成金刚石品级最差、所含缺陷最多;金刚石在形成过程中,除结晶生长过程外,还应该存在“排...
在室温条件下,以溴乙烷为单体、氢气为载气,用13.56 MHz射频等离子体化学气相淀积方法(RF-PECVD)在硅片衬底上生长了掺溴非晶碳氢薄膜(a-C∶Br∶H)。通过对其进行Raman光谱分析,研究了工作气压对薄膜结构的影响。结果显示:随着气体工作压力从20 Pa下降至5 Pa, 样品D峰强度增强,ID/IG值逐步由1.18增加至1.36,G峰的位置向高频轻微移动;与此同时,薄膜生长方式逐步转...
11种Cdaf在57.58%~94.01%的不同变质程度煤的拉曼光谱实验表明不同变质程度煤的拉曼光谱一级模都存在两个明显的振动峰,分别为较为宽缓的D峰(1 340~1 380 cm-1)和相对较为尖锐的G峰(1 580~1 600 cm-1)。将800~1 800 cm-1范围的谱图拟合为两个洛仑兹峰,每个峰的峰位置,峰强度以及半峰宽等拉曼参数与碳含量的相关关系分析结果显示:D峰位置和G峰位置随碳...
aman激光雷达是探测大气污染气体的一种重要方法,雷达回波反演是其中的重要步骤,反演的关键在于正确得到透过率指数因子。以消光系数为中心的三个方案,介绍了目前已普遍采用的方法、应用532 nm大气消光系数间接求取α(λ1,z)和α(λ2,z)。提出了两种新方法:(1) 采用拉曼波长与待测气体相近的参考气体,α(λ1,z)=α(λ2,z);(2) 借助λ1和λ2的Mie-Rayleigh散射回波求取...

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