公开(公告)号：US20170103838A1

公开(公告)日：2017-04-13

申请号：US15384973

申请日：2016-12-20

Applicant: SNU R&DB FOUNDATION

Inventor： Sunghoon KWON ,  Howon LEE ,  Junhoi KIM ,  Hyoki KIM

IPC: H01F1/28 ,  B22F1/02 ,  B22F1/00 ,  H01F1/00 ,  B82Y25/00

CPC classification number: H01F1/28 ,  B22F1/0003 ,  B22F1/02 ,  B22F2301/155 ,  B22F2301/35 ,  B22F2302/256 ,  B22F2999/00 ,  B82Y25/00 ,  H01F1/0054 ,  H01F1/0063 ,  B22F1/0018 ,  C22C2202/02 ,  B22F2301/15

Abstract: Provided is a color encoding method including providing a composition including a liquid medium and magnetic nanoparticles dispersed in the liquid medium; applying a magnetic field to the composition to align the magnetic nanoparticles; and applying a patterned energy source to the composition to solidify the composition, wherein more than one region of the composition are sequentially solidified with varying magnetic field strength to fix a plurality of color codes.