Method for analyzing color code encoded in magnetic structure

Patent metadata

Field	Value
Publication number	US-11062828-B2
Application number	US-201615384973-A
Country	US
Kind code	B2
Filing date	Dec 20, 2016
Priority date	Apr 14, 2009
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

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.

First claim

What is claimed is:

1. A color encoded magnetic structure, comprising:
a code region comprising multiple encoded color regions, each of the multiple encoded color regions comprising magnetic nanoparticles and a solid medium,
wherein the code region is color-encoded in multiple levels, and
the magnetic nanoparticles in each of the multiple encoded color regions are permanently aligned in a chain structure with a fixed inter-particle distance such that each of the multiple encoded color regions has a fixed structural color according to the fixed inter-particle distance.

2. The color encoded magnetic structure according to claim 1 , wherein the solid medium is a cured polymer.

3. The color encoded magnetic structure according to claim 1 , wherein the magnetic nanoparticles include superparamagnetic materials.

4. The color encoded magnetic structure according to claim 1 , further comprising a probe region.

5. The color encoded magnetic structure according to claim 4 , wherein the probe region includes a binding site capable of binding an external target.

6. The color encoded magnetic structure according to claim 1 , wherein each of the magnetic nanoparticles is embedded in the solid medium and comprises a shell layer and a cluster of magnetic nanocrystals coated with the shell layer.

Assignees

• Snu R&Db Foundation

Inventors

• Kwon Sunghoon
• Lee Howon
• Kim Junhoi
• Kim Hyoki

Classifications

• B22F1/16

  Metallic particles coated with a non-metal (coated with lubricating or binding agents or with organic material B22F1/10) · CPC title

• B22F1/00

  Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties · CPC title

• G01N21/25

  Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands · CPC title

• G01N33/48

  Biological material, e.g. blood, urine (G01N33/02, G01N33/26, G01N33/44, G01N33/46 take precedence); Haemocytometers (counting blood corpuscules distributed over a surface by scanning the surface G06M11/02) · CPC title

• G01N33/52 Primary

  Use of compounds or compositions for colorimetric, spectrophotometric or fluorometric investigation, e.g. use of reagent paper {and including single- and multilayer analytical elements (immunological elements G01N33/54386; involving labelled immunochemicals G01N33/58; for haemoglobin or occult blood G01N33/72)} · CPC title