Growth and aggregation of Cu nanocrystals on ionic liquid surfaces

doi:10.1088/1674-1056/ab8896

Abstract We report a catalyst-free growth of Cu nanocrystals on ionic liquid surfaces by thermal evaporation method at room temperature. After deposition of Cu on ionic liquid surfaces, ramified Cu aggregates form. It is found that the aggregates are composed of both granules and nanocrystals with triangular or hexagonal appearances. The sizes of the nanocrystals are in the range of tens to hundreds of nanometers and increase with the nominal deposition thickness. The growth mechanism of the Cu aggregates and nanocrystals is presented.

Keywords: ramified aggregates Cu nanocrystals liquid substrates critical state

Received: 02 March 2020
Revised: 01 April 2020
Accepted manuscript online:

PACS:	68.55.-a	(Thin film structure and morphology)
	81.10.Aj	(Theory and models of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)
	61.46.Df	(Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots))
	68.37.-d	(Microscopy of surfaces, interfaces, and thin films)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11374082).

Corresponding Authors: Gao-Xiang Ye
E-mail: gxye@zju.edu.cn,gxye@mail.hz.zj.cn

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Jia-Wei Shen(沈佳伟), Xun-Heng Ye(叶迅亨), Zhi-Long Bao(鲍志龙), Lu Li(李璐), Bo Yang(杨波), Xiang-Ming Tao(陶向明), Gao-Xiang Ye(叶高翔) Growth and aggregation of Cu nanocrystals on ionic liquid surfaces 2020 Chin. Phys. B 29 066801

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