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：US20180239070A1

公开(公告)日：2018-08-23

申请号：US15757339

申请日：2016-09-06

Applicant: President and Fellows of Harvard College

Inventor： Grant ENGLAND ,  Calvin RUSSELL ,  Theresa KAY ,  Elijah SHIRMAN ,  Ian BURGESS ,  Nicolas VOGEL ,  Joanna AIZENBERG

IPC: G02B5/28 ,  B44F1/06 ,  B44F1/08

CPC classification number: G02B5/285 ,  B41M3/148 ,  B42D25/351 ,  B42D25/373 ,  B44F1/066 ,  B44F1/08

Abstract: A method of making a multi-layered film includes depositing thin film layers onto a first side of a double-sided transparent substrate. The thin film layers are transparent, and two adjacent layers of said plurality of thin film layers have different refractive indices. One or more absorbers are deposited at an interface formed between two of the thin film layers that are adjacent to one another, or formed by the first side of the substrate and one of the thin film layers. The absorbers absorb selected wavelengths of incident light and reflect part of the incident light after inducing a phase shift. The location of the interface is selected to provide desired wavelengths of absorbed and reflected light. The multi-layered film has a first appearance when viewed from the first side of the substrate and a second appearance when viewed from the second side of the substrate.

公开(公告)号：US20160282275A1

公开(公告)日：2016-09-29

申请号：US15013263

申请日：2016-02-02

Applicant: President and Fellows of Harvard College

Inventor： Joanna AIZENBERG ,  Ian BURGESS ,  Lidiya MISHCHENKO ,  Benjamin HATTON ,  Marko LONCAR

IPC: G01N21/78

CPC classification number: G01N21/78 ,  B82Y20/00 ,  C08G59/502 ,  C08L63/00 ,  G01N21/774

Abstract: A three-dimensional porous photonic structure, whose internal pore surfaces can be provided with desired surface properties in a spatially selective manner with arbitrary patterns, and methods for making the same are described. When exposed to a fluid (e.g., via immersion or wicking), the fluid can selectively penetrate the regions of the structure with compatible surface properties. Broad applications, for example in security, encryption and document authentication, as well as in areas such as simple microfluidics and diagnostics, are anticipated.

Abstract translation: 描述了一种三维多孔光子结构，其内孔表面可以以任意图案以空间选择的方式提供所需的表面性质，以及制造它们的方法。 当暴露于流体（例如通过浸渍或芯吸）时，流体可以选择地渗透具有相容表面性质的结构区域。 预计广泛的应用，例如安全，加密和文档认证以及简单微流体和诊断等领域。

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：US20170205357A1

公开(公告)日：2017-07-20

申请号：US15320650

申请日：2015-06-22

Applicant: President and Fellows of Harvard College

Inventor： Ian BURGESS ,  Cicely SHILLINGFORD ,  Joanna AIZENBERG

IPC: G01N21/78 ,  G01N31/22

CPC classification number: G01N21/783 ,  G01N31/223 ,  G01N31/225

Abstract: A tamper-indicating device comprising is described, including a gas-permeable casing; and a first gas-sensitive compound encapsulated within the gas-permeable casing, wherein the first gas-sensitive compound is selected to provide a visual response upon exposure to gas.

公开(公告)号：US20170038295A1

公开(公告)日：2017-02-09

申请号：US15302389

申请日：2015-04-10

Applicant: President and Fellows of Harvard College

Inventor： Joanna AIZENBERG ,  Ian BURGESS ,  Natalie KOAY ,  Meredith DUFFY ,  Theresa KAY ,  Elijah SHIRMAN ,  Navid ABEDZADEH

IPC: G01N21/25 ,  G01N21/77 ,  G01N33/28 ,  G01N21/78 ,  G02B1/00

CPC classification number: G01N21/251 ,  G01N21/774 ,  G01N21/78 ,  G01N33/28 ,  G01N2021/7779 ,  G02B1/005

Abstract: A system and method to measure properties of a liquid, comprising: a colorimetric sensor comprising a photonic structure that displays a first signature upon exposure to a sample liquid that wets at least some of the interior surfaces of the porous photonic structure and displays a signature different from the first signature as the sample liquid evaporates. The system further includes a device to capture changes in the color of the colorimetric sensor; a memory to store data generated by the device; and a processing unit to analyze the data captured by the device. The processing unit compares the data captured by the device with a reference data, wherein the reference data comprises information regarding a time-dependent response of the colorimetric sensor upon exposure to and removal of a first set of predetermined liquids and to output information regarding the sample liquid.

Abstract translation: 一种用于测量液体性质的系统和方法，包括：比色传感器，包括光子结构，其在暴露于浸入多孔光子结构的至少一些内表面并且显示不同的签名的样品液体时显示第一标记 从第一个签名当样品液体蒸发。 该系统还包括用于捕获比色传感器的颜色变化的装置; 用于存储由设备生成的数据的存储器; 以及处理单元，用于分析由所述设备捕获的数据。 处理单元将由设备捕获的数据与参考数据进行比较，其中参考数据包括关于在暴露于和移除第一组预定液体时比色传感器的时间依赖性响应的信息，并且输出关于样品的信息 液体。