公开(公告)号：US11155715B2

公开(公告)日：2021-10-26

申请号：US14907197

申请日：2014-07-13

Applicant: President and Fellows of Harvard College

Inventor： Joanna Aizenberg ,  Nicolas Vogel ,  Ian Burgess ,  Mathias Kolle ,  Tanya Shirman ,  Stefanie Utech ,  Katherine Phillips ,  David A. Weitz ,  Natalie Koay

IPC: C09C1/00 ,  A61K8/19 ,  A61K8/81 ,  A61K8/29 ,  C09D17/00 ,  A61K8/25 ,  C09C3/06 ,  A61Q1/02 ,  C09C1/62 ,  A61K8/02 ,  A61Q1/06

Abstract: A structurally colored pigment is described that contains a plurality of photonic crystal particles dispersed in a medium, where each photonic crystal particles contains a plurality of spectrally selective absorbing components dispersed within the photonic crystal particle. In certain embodiments, each photonic crystal particle has a predetermined minimum number of repeat units of the photonic crystal structure. The structurally colored material provides improved reflectance, long-term stability, and control of the desired optical effects. The fabrication techniques described herein also provide high throughput and high yield allowing use in wide ranging applications from cosmetics, paints, signs, sensors, to packaging material.