In situ TEM probing properties of individual one-dimensional nanostructures

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	In situ TEM probing properties of individual one-dimensional nanostructures
	Bai, XD ; Xu, Z ; Liu, KH ; Wang, EG
刊名	INTERNATIONAL JOURNAL OF NANOTECHNOLOGY
	2007
卷号	4 期号:1-2 页码:119
关键词	TRANSMISSION ELECTRON-MICROSCOPY CARBON NANOTUBES FIELD-EMISSION WORK FUNCTION CONDUCTANCE NANOBELTS NANOMEASUREMENTS RESONANCE TIP
ISSN号	1475-7435
通讯作者	Wang, EG: Chinese Acad Sci, Inst Phys, Qingdao, POB 603, Beijing 100080, Peoples R China.
中文摘要	One-dimensional nanomaterials are a fundamental component of nanoscience and nanotechnology. Property measurements of individual one-dimensional nanostructures, including nanowires and nanotubes, are challenging due to their small size, which constrains the applications of the well-established testing and measurement techniques. We have developed an alternative novel approach that allows the direct measurements of the mechanical and physical properties of individual nanostructures inside high-resolution transmission electron microscopy (TEM), by which microstructures of the nanomaterials can be characterised in situ. Thus the properties of narrostructures can be directly correlated with their well-defined structures by this technique. This paper will review our progress in using in situ TEM method to measure the mechanical and field emission properties of individual nanowires and nanotubes. Mechanical resonance of zinc oxide (ZnO) nanobelt, as a new important class of nanowire, was induced by an alternating electric field. Due to the rectangular cross-section of the nanobelt, two fundamental resonance modes have been observed, corresponding to the two orthogonal transverse vibration directions, showing the versatile applications of nanobelts as nanocantilevers and nanoresonators. The elastic modulus of the ZnO nanobelts was measured to be similar to 52 GPa and the damping time constant of the resonance in vacuum of 10(-8) Torr was similar to 1.2 ins. Field emission proper-ties of individual carbon nanotubes have been systematically studied. The field emission behaviours have been directly linked with in situ nanotube tip morphology and their real work function. The dynamic field emission of a nanotube at mechanical resonance was also studied by in situ TEM method.
收录类别	SCI
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/39722]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Bai, XD,Xu, Z,Liu, KH,et al. In situ TEM probing properties of individual one-dimensional nanostructures[J]. INTERNATIONAL JOURNAL OF NANOTECHNOLOGY,2007,4(1-2):119.
APA	Bai, XD,Xu, Z,Liu, KH,&Wang, EG.(2007).In situ TEM probing properties of individual one-dimensional nanostructures.INTERNATIONAL JOURNAL OF NANOTECHNOLOGY,4(1-2),119.
MLA	Bai, XD,et al."In situ TEM probing properties of individual one-dimensional nanostructures".INTERNATIONAL JOURNAL OF NANOTECHNOLOGY 4.1-2(2007):119.