Ultralow flexural properties of copper microhelices fabricated via electrodeposition-based three-dimensional direct-writing technology

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	Ultralow flexural properties of copper microhelices fabricated via electrodeposition-based three-dimensional direct-writing technology
	Yi, Zhiran; Lei, Yu; Zhang, Xianyun; Chen, Yining; Guo, Jianjun; Xu, Gaojie; Yu, Min-Feng; Cui, Ping
刊名	NANOSCALE
	2017
卷号	9 期号:34 页码:12524-12532
ISSN号	2040-3364
英文摘要	Helical metallic micro/nanostructures as functional components have considerable potential for future miniaturized devices, based on their unique mechanical and electrical properties. Thus, understanding and controlling the mechanical properties of metallic helices is desirable for their practical application. Herein, we implemented a direct-writing technique based on the electrodeposition method to grow copper microhelices with well-defined and programmable three-dimensional (3D) features. The mechanical properties of the 3D helical structures were studied by the electrically induced quasistatic and dynamic electromechanical resonance technique. These methods mainly explored the static pull-in process and the dynamic electromechanical response, respectively. It was found that the center-symmetric and vertical double copper microhelix structure with 1.2 mu m wire diameter has a flexural rigidity of 0.9 x 10(-14) N m(2) and the single vertical copper microhelix structure with 1.1 mu m wire diameter has a flexural rigidity of 0.5989 x 10(-14) N m(2). By comparing with microwires and other reported micro/nanohelices, we found that the copper microhelices reported here had an ultralow stiffness (about 0.13 +/- 0.01 N m(-1)). It is found that the experimental results agree well with the finite element calculations. The proposed method can be used to fabricate and measure the flexural properties of three-dimensional complex micro/nanowire structures, and may have a profound effect on the application of microhelices in various useful microdevices such as helix-based microelectromechanical switches, sensors and actuators based on their unique mechanical properties.
公开日期	2017-12-25
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/13626]
专题	2017专题
推荐引用方式 GB/T 7714	Yi, Zhiran,Lei, Yu,Zhang, Xianyun,et al. Ultralow flexural properties of copper microhelices fabricated via electrodeposition-based three-dimensional direct-writing technology[J]. NANOSCALE,2017,9(34):12524-12532.
APA	Yi, Zhiran.,Lei, Yu.,Zhang, Xianyun.,Chen, Yining.,Guo, Jianjun.,...&Cui, Ping.(2017).Ultralow flexural properties of copper microhelices fabricated via electrodeposition-based three-dimensional direct-writing technology.NANOSCALE,9(34),12524-12532.
MLA	Yi, Zhiran,et al."Ultralow flexural properties of copper microhelices fabricated via electrodeposition-based three-dimensional direct-writing technology".NANOSCALE 9.34(2017):12524-12532.