Funding for this research was provided by:
National Key Research and Development Plan (2017YFB0404100)
Text and Data Mining valid from 2019-01-31
Received: 25 December 2018
Accepted: 20 January 2019
First Online: 31 January 2019
: KX is a professor in materials science. XKL is an associate professor in materials physics. HG, FFT and CYZ are associate professors in material characterization. JLW, YC, and XHD are students in fabrication nano-device.
: The authors declare that they have no competing interests.
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