Ke, Yonggang
Ong, Luvena L.
Sun, Wei
Song, Jie
Dong, Mingdong
Shih, William M.
Yin, Peng
Article History
Received: 26 May 2014
Accepted: 9 September 2014
First Online: 19 October 2014
Competing interests
: A provisional US patent application based on the work described in this manuscript has been filed.