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Chin. Phys. B, 2020, Vol. 29(6): 066801    DOI: 10.1088/1674-1056/ab8896
CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES Prev   Next  

Growth and aggregation of Cu nanocrystals on ionic liquid surfaces

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)
Department of Physics, Zhejiang University, Hangzhou 310027, China
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

Cite this article: 

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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