Black, Jennifer M.
Zhu, Mengyang
Zhang, Pengfei
Unocic, Raymond R.
Guo, Daqiang
Okatan, M. Baris
Dai, Sheng
Cummings, Peter T.
Kalinin, Sergei V.
Feng, Guang
Balke, Nina
Article History
Received: 11 April 2016
Accepted: 3 August 2016
First Online: 2 September 2016
Competing interests
: The authors declare no competing financial interests.