公开(公告)号：US20190227224A1

公开(公告)日：2019-07-25

申请号：US16165490

申请日：2018-10-19

Applicant: President and Fellows of Harvard College ,  University of Exeter

Inventor： Joanna AIZENBERG ,  Mathias KOLLE ,  Peter VUKUSIC ,  Robert D. HOWE

IPC: G02B6/02 ,  G02B6/036 ,  G02B6/028 ,  G01L1/24 ,  G02B1/00

CPC classification number: G02B6/0239 ,  G01L1/242 ,  G01L1/247 ,  G02B1/005 ,  G02B6/02033 ,  G02B6/02038 ,  G02B6/023 ,  G02B6/02304 ,  G02B6/02309 ,  G02B6/0285 ,  G02B6/03611

Abstract: The rolled photonic fibers presents two codependent, technologically exploitable features for light and color manipulation: regularity on the nanoscale that is superposed with microscale cylindrical symmetry, resulting in wavelength selective scattering of light in a wide range of directions. The bio-inspired photonic fibers combine the spectral filtering capabilities and color brilliance of a planar Bragg stack compounded with a large angular scattering range introduced by the microscale curvature, which also decreases the strong directional chromaticity variation usually associated with flat multilayer reflectors. Transparent and elastic synthetic materials equip the multilayer interference fibers with high reflectance that is dynamically tuned by longitudinal mechanical strain. A two-fold elongation of the elastic fibers results in a shift of reflection peak center wavelength of over 200 nm.

公开(公告)号：US20150362669A1

公开(公告)日：2015-12-17

申请号：US14760306

申请日：2014-01-23

Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE ,  UNIVERSITY OF EXETER

Inventor： Joanna AIZENBERG ,  Mathias KOLLE ,  Peter VUKUSIC ,  Robert D. HOWE

IPC: G02B6/02 ,  G01L1/24 ,  G02B1/00 ,  G02B6/028 ,  G02B6/036

CPC classification number: G02B6/0239 ,  G01L1/242 ,  G01L1/247 ,  G02B1/005 ,  G02B6/02033 ,  G02B6/02038 ,  G02B6/023 ,  G02B6/02304 ,  G02B6/02309 ,  G02B6/0285 ,  G02B6/03611

Abstract: The rolled photonic fibers presents two codependent, technologically exploitable features for light and color manipulation: regularity on the nanoscale that is superposed with microscale cylindrical symmetry, resulting in wavelength selective scattering of light in a wide range of directions. The bio-inspired photonic fibers combine the spectral filtering capabilities and color brilliance of a planar Bragg stack compounded with a large angular scattering range introduced by the microscale curvature, which also decreases the strong directional chromaticity variation usually associated with flat multilayer reflectors. Transparent and elastic synthetic materials equip the multilayer interference fibers with high reflectance that is dynamically tuned by longitudinal mechanical strain. A two-fold elongation of the elastic fibers results in a shift of reflection peak center wavelength of over 200 nm.

Abstract translation: 卷绕的光子纤维呈现出两种相互依赖的，技术上可利用的光和颜色操纵特征：纳米级的规则性与微圆柱对称叠加，导致光在宽范围方向上的波长选择性散射。 生物启发的光子纤维结合了平面布拉格堆叠的光谱滤波能力和色彩亮度，与通过微尺度曲率引入的大角度散射范围相结合，这也降低了通常与平面多层反射器相关的强定向色度变化。 透明和弹性的合成材料为多层干涉纤维提供高反射率，通过纵向机械应变动态调整。 弹性纤维的两倍伸长导致反射峰值中心波长超过200nm的偏移。

公开(公告)号：US20160168386A1

公开(公告)日：2016-06-16

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 ,  C09D17/00 ,  A61K8/81 ,  A61K8/29 ,  A61Q1/02 ,  C09C3/06 ,  A61K8/25

CPC classification number: C09C1/0081 ,  A61K8/0283 ,  A61K8/19 ,  A61K8/25 ,  A61K8/29 ,  A61K8/8176 ,  A61K2800/412 ,  A61K2800/43 ,  A61K2800/5922 ,  A61Q1/02 ,  A61Q1/06 ,  C01P2004/64 ,  C09C1/62 ,  C09C3/06 ,  C09D17/006

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.

Abstract translation: 描述了包含分散在介质中的多个光子晶体颗粒的结构着色的颜料，其中每个光子晶体颗粒包含分散在光子晶体颗粒内的多个光谱选择性吸收组分。 在某些实施方案中，每个光子晶体颗粒具有预定的最小数量的光子晶体结构的重复单元。 结构着色的材料提供改善的反射率，长期稳定性和所需光学效果的控制。 本文描述的制造技术还提供高产量和高产量，允许在从化妆品，油漆，标志，传感器到包装材料的广泛应用中使用。

公开(公告)号：US20200023346A1

公开(公告)日：2020-01-23

申请号：US16391053

申请日：2019-04-22

Applicant: President and Fellows of Harvard College

Inventor： Joanna AIZENBERG ,  Tanya SHIRMAN ,  Nicolas VOGEL ,  Mathias KOLLE ,  Michael AIZENBERG

IPC: B01J35/10 ,  C04B38/00 ,  B01J23/52 ,  B01J37/00

Abstract: Methods for forming an interconnected network of solid material and pores, with metal residing only at the air/solid interface of the interconnected network structure are described. In certain embodiments, nanoparticle decorated sacrificial particles can be used as sacrificial templates for the formation of a porous structure having an interconnected network of solid material and interconnected network of pores. The nanoparticles reside predominantly at the air/solid interface and allow further growth and accessibility of the nanoparticles at defined positions of the interconnected structure. SEM and TEM measurements reveal the formation of 3D interconnected porous structures with nanoparticles residing predominantly at the air/solid interface of the interconnected structure.

公开(公告)号：US20220002554A1

公开(公告)日：2022-01-06

申请号：US17476950

申请日：2021-09-16

Applicant: President and Fellows of Harvard College

Inventor： Joanna AIZENBERG ,  Nicolas VOGEL ,  Ian BURGESS ,  Mathias KOLLE ,  Tanya SHIRMAN ,  Stefanie UTECH ,  Katherine Reece PHILLIPS ,  David A. WEITZ ,  Natalie KOAY

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

Abstract: A pigment comprising a plurality of photonic crystal particles dispersed in a medium, each photonic crystal particles containing a plurality of spectrally selective absorbing components dispersed within each photonic crystal particle that selectively absorb electromagnetic radiation without substantially absorbing electromagnetic radiation near a resonant wavelength of each photonic crystal particle, wherein each photonic crystal particle has a predetermined minimum number of repeat units of a photonic crystal structure, wherein the predetermined minimum number of repeat units is related to the resonant wavelength, the full-width at half maximum of the resonant wavelength, and the refractive index contrast in the photonic crystal.

公开(公告)号：US20160144350A1

公开(公告)日：2016-05-26

申请号：US14900567

申请日：2014-06-30

Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE

Inventor： Joanna AIZENBERG ,  Tanya SHIRMAN ,  Nicolas VOGEL ,  Mathias KOLLE ,  Michael ALZENBERG

IPC: B01J35/10 ,  B01J37/00 ,  B01J23/52

CPC classification number: B01J35/10 ,  B01J23/52 ,  B01J37/0018 ,  B82Y30/00 ,  B82Y40/00 ,  C04B38/0096 ,  C04B2111/0081 ,  C04B35/01 ,  C04B38/0074 ,  C04B38/06

Abstract: Methods for forming an interconnected network of solid material and pores, with metal residing only at the air/solid interface of the interconnected network structure are described. In certain embodiments, nanoparticle decorated sacrificial particles can be used as sacrificial templates for the formation of a porous structure having an interconnected network of solid material and interconnected network of pores. The nanoparticles reside predominantly at the air/solid interface and allow further growth and accessibility of the nanoparticles at defined positions of the interconnected structure. SEM and TEM measurements reveal the formation of 3D interconnected porous structures with nanoparticles residing predominantly at the air/solid interface of the interconnected structure.

Abstract translation: 描述了形成固体材料和孔隙的互连网络的方法，金属仅驻留在互连网络结构的空气/固体界面处。 在某些实施方案中，纳米颗粒装饰的牺牲颗粒可以用作用于形成具有固体材料和互连的孔网络的互连网络的多孔结构的牺牲模板。 纳米颗粒主要位于空气/固体界面处，并允许纳米颗粒在互连结构的限定位置的进一步生长和可及性。 SEM和TEM测量揭示了具有主要位于互连结构的空气/固体界面处的纳米颗粒的3D相互连接的多孔结构的形成。