	US 11,987,711 B2
	Particles with color effect and compositions including the same
Krishnan Thyagarajan, Mountain View, CA (US); Dogan Timucin, Santa Cruz, CA (US); and Stephen Matthew Meckler, Mountain View, CA (US)
Assigned to XEROX CORPORATION, Norwalk, CT (US)
Filed by Palo Alto Research Center Incorporated, Palo Alto, CA (US)
Filed on Nov. 30, 2020, as Appl. No. 17/106,730.
Prior Publication US 2022/0169860 A1, Jun. 2, 2022
Int. Cl. C09C 1/00 (2006.01); C09C 1/36 (2006.01); G02B 5/22 (2006.01)

CPC C09C 1/0087 (2013.01) [C09C 1/3676 (2013.01); G02B 5/223 (2013.01); C01P 2004/62 (2013.01); C01P 2004/64 (2013.01); C01P 2006/22 (2013.01)]

15 Claims

1. A particle comprising a first material forming a first portion and a second material forming a second portion surrounding or adjacent the first portion, arranged to provide a Fano resonance effect in visible portion of electromagnetic spectrum,

wherein the second material comprises a polymer,

wherein the first portion has a cross-sectional half dimension of 20 nm to 200 nm, and

wherein the second portion has a cross-sectional dimension of 20 nm to 300 nm.