Ota, Hiroki
Chen, Kevin
Lin, Yongjing
Kiriya, Daisuke
Shiraki, Hiroshi
Yu, Zhibin
Ha, Tae-Jun
Javey, Ali
Article History
Received: 30 April 2014
Accepted: 19 August 2014
First Online: 29 September 2014
Competing interests
: The authors declare no competing financial interests.