Patent ID: 8671769
Filing Date: 2014-03-18
Classification: G01B,H01F

Abstract:
1. A device for measuring a deformation ratio of a structure comprising a substrate attached on said structure; and a photonic crystal layer formed on said substrate containing nanoparticles aligned at a nanometer scale interval, wherein when said structure is deformed, change of intervals between said nanoparticles included in said photonic crystal layer occurs, thereby structural color and magnetic flux in a portion of the deformed photonic crystal layer are changed, so that a degree of deformation in said structure may be measured on the basis of said change of structural color or magnetic flux, wherein said nanoparticles are one or more selected from the group consisting of polystyrene, poly(meth)acrylic acid ester, poly(meth)acrylamide, polysiloxane, amphiphatic polystyrene/methacrylate block copolymer and a magnetic body, wherein the magnetic body has a form comprising ferromagnetic nanoparticle clusters; and a coating layer enclosing said clusters.