Broadband nonlinear optical and optical limiting effects of partially unzipped carbon nanotubes
Broadband nonlinear optical and optical limiting effects of partially unzipped carbon nanotubes
复制标题
部分解开的碳纳米管的宽带非线性光学和光学限制效应
DOI：
10.1039/c5tc02155c
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发表时间：
2015-09
期刊：
影响因子：
--
通讯作者：
Hongbing Zhan
中科院分区：
文献类型：
--
作者：
Yingpan Song;Yao Gan;Miao Feng;Hongbing Zhan
许多研究表明，碳纳米管(CNTs)和石墨烯都是重要的宽带非线性光学(NLO)和光限幅(OL)材料。部分解链碳纳米管(PUCNTs)作为碳纳米管和石墨烯的杂化材料，有望表现出优异的NLO和OL效应。在本工作中，通过对多壁碳纳米管的纵向切割和解体，得到了PUCNTs。用透射电子显微镜、扫描电子显微镜、粉末X射线衍射仪、傅立叶变换红外光谱和拉曼光谱对PUCNTs的结构和组成进行了表征。用Z扫描技术研究了在纳秒范围内532 nm和1064 nm处的NLO和OL性质，并与碳纳米管和石墨烯进行了比较。观察到了显著的增强效应，这可以归因于非线性散射和非线性吸收的协同作用。
Many studies have shown that both carbon nanotubes (CNTs) and graphene are important broadband nonlinear optical (NLO) and optical limiting (OL) materials. As hybrids of CNTs and graphene, partially unzipped carbon nanotubes (PUCNTs) can be expected to exhibit superior NLO and OL effects. In this work, PUCNTs were obtained through lengthwise cutting and unraveling of multi-walled carbon nanotubes. The structure and component of PUCNTs were confirmed by transmission electron microscopy, scanning electron microscopy, powder X-ray diffraction, Fourier-transform infrared and Raman spectra. NLO and OL properties were investigated by the Z-scan technique at both 532 and 1064 nm in the nanosecond regime, in comparison with CNTs and graphene. A remarkable enhancement was observed, which can be attributed to the synergistic effect of nonlinear scattering and nonlinear absorption.
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