KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY; SIM, Tae Bo; CHOI, Hwan Geun; HAH, Jung Mi; HAM, Young Jin; JUN, Eun Jin; LEE, Jung Hun; KIM, Hwan Patent: WO2011/49332 A2, 2011 ; Location in patent: Page/Page column 17 ; WO 2011/049332 A2