Zhu, Nan
Zheng, Kaibo
Karki, Khadga J.
Abdellah, Mohamed
Zhu, Qiushi
Carlson, Stefan
Haase, Dörthe
Žídek, Karel
Ulstrup, Jens
Canton, Sophie E.
Pullerits, Tõnu
Chi, Qijin
Article History
Received: 3 November 2014
Accepted: 24 March 2015
First Online: 21 May 2015
Competing interests
: The authors declare no competing financial interests.