Different angle-resolved polarization configurations of Raman spectroscopy: A case on the basal and

来源 :Chinese Physics B | 被引量 : 0次 | 上传用户:yooeo
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Angle-resolved polarized Raman(ARPR) spectroscopy can be utilized to assign the Raman modes based on crystal symmetry and Raman selection rules and also to characterize the crystallographic orientation of anisotropic materials.However, polarized Raman measurements can be implemented by several different configurations and thus lead to different results. In this work, we systematically analyze three typical polarization configurations: 1) to change the polarization of the incident laser, 2) to rotate the sample, and 3) to set a half-wave plate in the common optical path of incident laser and scattered Raman signal to simultaneously vary their polarization directions. We provide a general approach of polarization analysis on the Raman intensity under the three polarization configurations and demonstrate that the latter two cases are equivalent to each other. Because the basal plane of highly ordered pyrolytic graphite(HOPG) exhibits isotropic feature and its edge plane is highly anisotropic, HOPG can be treated as a modelling system to study ARPR spectroscopy of twodimensional materials on their basal and edge planes. Therefore, we verify the ARPR behaviors of HOPG on its basal and edge planes at three different polarization configurations. The orientation direction of HOPG edge plane can be accurately determined by the angle-resolved polarization-dependent G mode intensity without rotating sample, which shows potential application for orientation determination of other anisotropic and vertically standing two-dimensional materials and other materials. Angle-resolved polarized Raman (ARPR) spectroscopy can be assigned to the Raman modes based on crystal symmetry and Raman selection rules and also to characterize the crystallographic orientation of anisotropic materials. lead to different results. 1) to change the polarization of the incident laser, 2) to rotate the sample, and 3) to set a half-wave plate in the common optical path of incident laser and scattered Raman signal to simultaneously vary their polarization directions. We provide a general approach of polarization analysis on the Raman intensity under the three polarization configurations and demonstrate that the latter two cases are equivalent to each other. ordered pyrolytic graphite (HOPG) exhibits isotropic feature and its edge plane is highly anisotro pic, HOPG can be treated as a modeling system to study ARPR spectroscopy of twodimensional materials on their basal and edge planes. Therefore, we verify the ARPR behaviors of HOPG on its basal and edge planes at three different polarization configurations. edge plane can be accurately determined by the angle-resolved polarization-dependent G mode intensity without rotating sample, which shows potential application for orientation determination of other anisotropic and vertically standing two-dimensional materials and other materials.
其他文献
工业界是很讲究标准化的。比如枪,士兵拿着同规格的子弹放进同型号的不同枪里,他肯定不用担心这次的瞄准需要和上次有什么不同。但注塑机就不同了,同规格的两台注塑机面蚶同
Energy Daily,2014-02-182月18日,美国总统奥巴马行使其应对气候变化的行政权力,命令官员开始制定中型和重型卡车新的燃油效率标准。奥巴马说,在公路运输中这些卡车占4%,而燃
阐述网络环境下参考咨询工作的特点,分析网络环境下参考咨询员应具备的素质及提高参考咨询员素质的方法。 Describes the characteristics of reference work under the net
为提高督察工作实效,提升安全生产监察、监管水平,利用有限的资金和资源,最大限度地解决安全隐患问题,进入2014年,西北油田安全环保督察大队创新督察方式方法,开展实施安全生
本刊讯应俄罗斯Renova集团Orgsyntes分部的邀请,为了积极推进四川贝尔化工集团与其在草甘膦项目的合作,7月27日,四川贝尔化工集团组成了以集团董事长王国成为领队的考察组,前
光催化分解水制H_2和光催化还原CO_2是解决能源危机和全球变暖的有效途径.但是,由于粉末光催化剂存在回收效率低的问题,因而光催化成本很高.而磁性光催化剂便于回收和重复利
6月份以来,我省大部分地区雨水较往年偏多。省委、省政府高度重视今年的防汛工作,要求继续实行省委、省政府领导分包设区市防汛工作责任制,加强各设区市防汛工作的组织领导。
请下载后查看,本文暂不支持在线获取查看简介。
一是以强化经济运行监测为基础,引导行业企业提高经济效益和质量;二是以化解产能过剩矛盾为重点,深化产业结构战略性调整;三是以提高自主创新能力为目标,深入实施创新驱动发
本发明披露了由生物降解纳米纤维和/或一种或多种聚合物的微纤维组成的组成物,聚合物从含有纤维素或壳聚糖或聚乙烯醇或明胶或胶原质或透明质酸或聚透明质酸或这些聚合物的衍