Invention Grant
- Patent Title: Structurally colored materials with spectrally selective absorbing components and methods for making the same
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Application No.: US14907197Application Date: 2014-07-13
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Publication No.: US11155715B2Publication Date: 2021-10-26
- Inventor: Joanna Aizenberg , Nicolas Vogel , Ian Burgess , Mathias Kolle , Tanya Shirman , Stefanie Utech , Katherine Phillips , David A. Weitz , Natalie Koay
- Applicant: President and Fellows of Harvard College
- Applicant Address: US MA Cambridge
- Assignee: President and Fellows of Harvard College
- Current Assignee: President and Fellows of Harvard College
- Current Assignee Address: US MA Cambridge
- Agency: Wilmer Cutler Pickering Hale and Dorr LLP
- International Application: PCT/US2014/049288 WO 20140713
- International Announcement: WO2015/017722 WO 20150205
- Main IPC: C09C1/00
- 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.
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