@patent {252826,
	title = {Photonic balls containing a microstructure of core-shell particles exhibiting angularly-independent structural color},
	volume = {US20140254017 A1},
	number = {U.S. Patent and Trademark Office},
	year = {2014},
	edition = {United States of America},
	chapter = {US},
	abstract = {A photonic assembly for observing a preselected color includes an assembly of colloidal particles in a continuous liquid phase, the colloidal particles comprising a core scattering center and a shell layer surrounding the core, wherein the core scattering center is selected to scatter light having a predetermined wavelength, and wherein the shell has a thickness selected to provide an overall colloidal particle size that is about the same dimension as the wavelength of preselected color to be observed.},
	author = {Vinothan Manoharan and Sofia Magkiriadou and Jin-Gyu Park}
}
