拉曼散射实验中的应变工作台设计

论文总字数：27348字

摘 要

石墨烯是一种优良的二维碳材料，具有良好的电学特性、热学特性、力学特性等物理特性。目前，关于石墨烯电学特性及热学特性的理论研究及相关实验已经为许多科研人员所实现。但关于石墨烯发生应变对其光学特性的影响的相关研究却不多见。拉曼光谱技术是一种无损快速表征电子能带结构、声子能量色散等研究的重要技术手段,具有很高的分辨率，近年来，得到了富勒烯、碳纳米管、金刚石等研究的追捧，在碳材料的相关研究中起到了至关重要的作用。自石墨烯被发现以来，拉曼光谱技术成为石墨烯研究领域中一项非常重要的实验手段。因此，我们将利用拉曼光谱技术来研究石墨烯在发生应变之后的相关光学特性。现有的实验器材不足以满足本实验的需要，因此，首先需要设计一个可以施加应变的工作台。在本文中，我们首先研究设计了可以对单层石墨烯施加应变的工作台，然后利用化学气相沉积法制备了单层石墨烯，并将其转移到可施加应力的柔性基底上，并进行了拉曼光谱对于石墨烯应力响应的研究。

关键词：石墨烯，应变工作台，拉曼光谱

Design of strain bench in Raman scattering experiments and optical measurement

02011330 Lu Guo

Supervised by Ke Dong Bi

Abstract: Graphene is an excellent two-dimensional carbon material which has good electrical characteristics, thermal characteristics, mechanical characteristics and other physical characteristics. Currently, the theoretical study and related experiments about electrical characteristics and thermal characteristics of graphene has already been achieved by many researchers. However, study on the effects of strain with its optical properties of graphene is rare. Raman spectroscopy is an important technical means in rapid non-destructive characterization of the electronic band structure, phonon energy dispersion and other research, which has high resolution. In recent years, it has been sought by the study of fullerenes, carbon nanotubes, diamond, etc. And it has played an important role in the study of carbon materials. Since graphene was discovered, Raman spectroscopy has become a very important experimental tool in the study of graphene. Therefore, we will use Raman spectroscopy to study the optical characteristics of graphene with strain. The existing experimental equipment is insufficient to meet the needs of this experiment. So, we need to design a working table which can apply strain. In this paper, we first design a working table that can apply strain to the graphene, and then use the chemical vapor deposition method to produce the monolayer graphene, and transferred it to a flexible substrate that can be applied stress. In addation, we study the response of monolayer graphene with stress in Raman spectra .

Key words: graphene; work bench; Roman spectroscopy

目录

摘要········································································1

Abstract····································································2

第一章 绪论

1.1研究背景及现状······················································4

1.1.1石墨烯的热学特性及电学特性研究·································4

1.1.2石墨烯的力学特性研究···········································6

1.2 石墨烯的光学特性研究及应变工作台研究································8

1.2.1石墨烯的光学特性··············································8

1.2.2 应变工作台研究分析···········································9

1.3本文的工作内容·······················································9

第二章 应变工作台的总体结构设计

2.1驱动方式的选择···················································11

2.2导轨型式的选取·····················································11

2.3复位拉伸装置的设计·················································14

2.4 夹紧装置的设计···················································16

2.5 系统总装·························································17

第三章 石墨烯的光学特性研究

3.1 石墨烯的制备方法··················································19

3.1.1微机械剥离法················································19

3.1.2化学气相沉积法··············································19

3.2 气相沉积方法制备石墨烯的转移·······································21

3.3 石墨烯的拉曼光谱研究················································23

3.4 应力对于石墨烯拉曼光谱的影响·······································25

第四章 总结与展望·····················································28

致谢··································································32

参考文献······························································33

拉曼散射试验中的应变工作台设计及光学测试

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