Liang, Guozhen
Dupont, Emmanuel
Fathololoumi, Saeed
Wasilewski, Zbigniew R.
Ban, Dayan
Liang, Hou Kun
Zhang, Ying
Yu, Siu Fung
Li, Lianhe H.
Davies, Alexander Giles
Linfield, Edmund H.
Liu, Hui Chun
Wang, Qi Jie
Article History
Received: 24 July 2014
Accepted: 16 October 2014
First Online: 18 November 2014
Competing interests
: The authors declare no competing financial interests.