KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY; HAH, Jung-Mi; YOO, Kyung Ho; SIM, Tae-Bo; OH, Chang Hyun; LEE, Jung Hun; YU, Hana; KIM, Hwan Patent: WO2011/49274 A1, 2011 ; Location in patent: Page/Page column 17 ; WO 2011/049274 A1