Kim, Soo Min
Hsu, Allen
Park, Min Ho
Chae, Sang Hoon
Yun, Seok Joon
Lee, Joo Song
Cho, Dae-Hyun
Fang, Wenjing
Lee, Changgu
Palacios, Tomás
Dresselhaus, Mildred
Kim, Ki Kang
Lee, Young Hee
Kong, Jing
Article History
Received: 10 June 2015
Accepted: 17 September 2015
First Online: 28 October 2015
Competing interests
: The authors declare no competing financial interests.