title: Full-spectrum photonic pigments with non-iridescent structural colors through colloidal assembly.
abstract: Structurally colored materials could potentially replace dyes and pigments in many applications, but it is challenging to fabricate structural colors that mimic the appearance of absorbing pigments. We demonstrate the microfluidic fabrication of "photonic pigments" consisting of microcapsules containing dense amorphous packings of core-shell colloidal particles. These microcapsules show non-iridescent structural colors that are independent of viewing angle, a critical requirement for applications such as displays or coatings. We show that the design of the microcapsules facilitates the suppression of incoherent and multiple scattering, enabling the fabrication of photonic pigments with colors spanning the visible spectrum. Our findings should provide new insights into the design and synthesis of materials with structural colors.
authors: School of Engineering and Applied Sciences and Department of Physics, Harvard University,17 Oxford St. Cambridge, MA 02138 (USA) http://manoharan.seas.harvard.edu.
authors: Jin-Gyu
authors: JG
authors: Park
authors: Shin-Hyun
authors: SH
authors: Kim
authors: Sofia
authors: S
authors: Magkiriadou
authors: Tae Min
authors: TM
authors: Choi
authors: Young-Seok
authors: YS
authors: Kim
authors: Vinothan N
authors: VN
authors: Manoharan
keywords: colloids; dyes/pigments; isotropic structure; microfluidics; structural colors