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Tunable Raman spectroscopy of carbon nanotubes under high pressure

高压下碳纳米管的可调谐拉曼光谱

基本信息

批准号：
EP/G070539/1
负责人：
David James Dunstan
金额：
$ 29.46万
依托单位：
Queen Mary University of London
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2009
资助国家：
英国
起止时间：
2009 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FG070539%2F1
关键词：
Tunable Raman spectroscopy carbon nanotubes

项目摘要

The purpose of this proposal is to test the idea that the puzzling variations in the behaviour of carbon nanotubes under high pressure observed by different research groups around the world are due to Raman resonance effects. The implication is that high-pressure Raman spectroscopy of nanotubes - and indeed the study of nanotubes in different solvents - absolutely requires tunable laser excitation, so the same nanotubes (diameter and chirality) can be picked out as the conditions are changed. This would bring high-pressure Raman to a much higher degree of precision and here enable reliable and definitive high-pressure data to be obtained for single wall carbon nanotubes. As far as we are aware, no laboratory world-wide has the capabilities (tunable Raman plus high pressure) required for this programme, so the apparatus will constitute a novel, indeed unique facility. The results of this programme will have pivotal implications for the entire literature on the subject. The results will provide means of reliable testing of mechanical response of carbon nanotubes to applied stress and will provide decisive insights into interplay (and connection) between mechanical and electronic properties of nanotubes. This will provide vital information to the academic community and to workers in nanotechnology exploiting carbon nanothubes.

这个提议的目的是为了验证这样一个观点，即世界各地不同的研究小组观察到的碳纳米管在高压下令人困惑的行为变化是由于拉曼共振效应造成的。这意味着纳米管的高压拉曼光谱学--实际上是对不同溶剂中纳米管的研究--绝对需要可调谐的激光激发，因此当条件改变时，可以挑选出相同的纳米管（直径和手性）。这将使高压拉曼达到更高的精确度，并且在此能够获得单壁碳纳米管的可靠和确定的高压数据。据我们所知，世界上没有一个实验室具有这项计划所需的能力（可调谐拉曼加高压），因此该设备将构成一个新颖的，确实独特的设施。这一方案的结果将对关于这一主题的整个文献产生关键影响。结果将提供可靠的测试手段的机械响应的碳纳米管施加的应力，并将提供决定性的见解纳米管的机械和电子性能之间的相互作用（和连接）。这将为学术界和利用碳纳米管的纳米技术工作者提供重要信息。