公开(公告)号：US12091544B1

公开(公告)日：2024-09-17

申请号：US17187826

申请日：2021-02-28

Applicant: HRL Laboratories, LLC

Inventor： Kevin Drummey ,  Ashley Dustin ,  Andrew Nowak ,  Adam Gross ,  Shanying Cui

IPC: C08L77/06 ,  C08G69/28

CPC classification number: C08L77/06 ,  C08G69/28 ,  C08L2201/10

Abstract: Some variations provide a polyoxalamide polymer comprising: one or more first segments containing at least one repeat unit that includes (i) a branched, aliphatic hydrocarbon species and (ii) first amide groups at internal ends of the repeat unit, wherein the first amide groups are part of oxalamide groups; one or more polymer end groups containing second amide groups that are each covalently bonded directly to one of the first amide groups, wherein the second amide groups are also part of the oxalamide groups, and wherein the oxalamide groups contain —N—C(═O)—C(—O)—N-sequences; and a reacted form of one or more multifunctional amine chain extenders or crosslinkers with an amine functionality of 3 or greater. The polyoxalamide polymer may be present in a lens, a window, a coating, or a film, for example. The polyoxalamide polymer may have UV transparency, visual transparency, NIR transparency, MWIR transparency, and/or LWIR transparency.

公开(公告)号：US12048773B2

公开(公告)日：2024-07-30

申请号：US18464884

申请日：2023-09-11

Applicant: HRL LABORATORIES, LLC

Inventor： Adam F. Gross ,  Kevin Geary ,  Shanying Cui

IPC: A61L2/10 ,  A61L2/238 ,  A61L2/26 ,  F21V8/00 ,  G02B5/00 ,  G02B6/10

CPC classification number: A61L2/10 ,  A61L2/238 ,  A61L2/26 ,  G02B5/008 ,  G02B6/0023 ,  G02B6/0065 ,  G02B6/102 ,  A61L2202/11 ,  G02B6/003 ,  G02B6/0043 ,  G02B6/0066

Abstract: A self-sanitizing surface structure configured to selectively refract light, a method of fabricating a self-sanitizing surface configured to selectively refract light, and a method of decontaminating a surface using selectively refracted light. A waveguide including a support layer below a propagating layer is positioned over a substrate as a self-sanitizing layer. In the absence of a contaminant or residue on the waveguide, UV light injected into the propagating layer is constrained within the propagating layer due to total internal reflection. When a residue is present on the self-sanitizing surface structure, light may be selectively refracted at or near the interface with the residue along the side of the waveguide to destroy the residue. The self-sanitizing surface structure may be configured is to refract a suitable amount of UV light in response to a particular type of residue or application.

公开(公告)号：US11845061B1

公开(公告)日：2023-12-19

申请号：US17026223

申请日：2020-09-19

Applicant: HRL Laboratories, LLC

Inventor： Christopher S. Roper ,  Shanying Cui ,  Adam F. Gross ,  Xin Guan

IPC: B01J13/10 ,  B82Y30/00 ,  B82Y40/00 ,  B01J20/32 ,  G02B5/02

CPC classification number: B01J20/3295 ,  G02B5/0242 ,  G02B5/0284

Abstract: Some variations provide an interspersed assembly of nanoparticles, the assembly comprising a first phase containing first nanoparticles and a second phase containing second nanoparticles, wherein the second phase is interspersed with the first phase, and wherein the first nanoparticles are compositionally different than the second nanoparticles. The interspersed assembly may be a semi-ordered assembly comprising discrete first-phase particles surrounded by a continuous second phase. Other variations provide a core-shell assembly of nanoparticles, the assembly comprising a first phase containing first nanoparticles and a second phase containing compositionally distinct second nanoparticles, wherein the second phase forms a shell surrounding a core of the first phase. The disclosed assemblies may have a volume from 1 μm3 to 1 mm3, a packing fraction from 20% to 100%, and an average relative surface roughness less than 5%, for example. Methods of making these assemblies are described, and many experimental examples are included.

公开(公告)号：US11693153B2

公开(公告)日：2023-07-04

申请号：US16990096

申请日：2020-08-11

Applicant: HRL Laboratories, LLC

Inventor： Shanying Cui ,  Sean M. Meenehan ,  Tobias A. Schaedler ,  Phuong Bui

IPC: G02B1/00 ,  G02B5/10

CPC classification number: G02B1/005 ,  G02B5/10

Abstract: The disclosed structure is configured such that it does not support electromagnetic waves having frequencies within a selected band gap; those electromagnetic waves are thus reflected. Some variations provide an omnidirectional infrared reflector comprising a three-dimensional photonic crystal containing: rods of a first material that has a first refractive index, wherein the rods are arranged to form a plurality of lattice periods in three dimensions, and wherein the rods are connected at a plurality of nodes; and a second material that has a refractive index that is lower than the first refractive index, wherein the rods are embedded in the second material. The lattice spacing and the rod radius or width are selected to produce a photonic band gap within a selected band of the infrared spectrum. Methods of making and using the three-dimensional photonic crystal are described. Applications include thermal barrier coatings and blackbody emission signature control.

公开(公告)号：US10829386B1

公开(公告)日：2020-11-10

申请号：US16203788

申请日：2018-11-29

Applicant: HRL Laboratories, LLC

Inventor： Adam F. Gross ,  Xin N. Guan ,  Shanying Cui ,  Florian G. Herrault

IPC: C01G49/00 ,  B82Y40/00

Abstract: Some variations provide a method of making water-dispersed hexaferrite nanoparticles, comprising: providing a first salt containing iron, a second salt containing barium and/or strontium, and a third salt containing an anion or cation that is capable of forming a ligand with the hexaferrite nanoparticles; combining the first salt, second salt, third salt, and water to form a reaction mixture; subjecting the reaction mixture to effective reaction conditions to produce hexaferrite nanoparticles with the anion or cation in the third salt forming a ligand on the surface, so that the hexaferrite nanoparticles are dissolved and/or suspended in the reaction mixture; and obtaining water-dispersed hexaferrite nanoparticles with an average zeta potential of at least ±20 mV. The water-dispersed hexaferrite nanoparticles have a hexaferrite content of at least 85 wt %. The method may further include assembling water-dispersed hexaferrite nanoparticles into a magnetic component, such as a self-biased hexaferrite film on a semiconductor substrate.

公开(公告)号：US10683400B1

公开(公告)日：2020-06-16

申请号：US15792098

申请日：2017-10-24

Applicant: HRL Laboratories, LLC

Inventor： April R. Rodriguez ,  Ashley M. Nelson ,  Shanying Cui ,  Andrew P. Nowak ,  Adam F. Gross

IPC: C08K3/06 ,  C08J3/24 ,  C08G18/48 ,  C08G18/24 ,  C09D175/08 ,  C08J3/28 ,  C08J5/18 ,  C08G18/75 ,  C08K3/08 ,  C08G18/34 ,  C09D7/61 ,  C08G18/10

Abstract: This invention provides compositions and methods for reversible ionic crosslinking in polymers, providing tunability of polymer mechanical properties. Some variations provide a polymer composition comprising: a polymer containing a plurality of ionic species disposed along the chain backbone of the polymer, wherein the plurality of ionic species has an ionic charge polarity that is negative or positive; a redox reagent; and a reversible crosslinking agent capable of changing from a first oxidation state to a second oxidation state when in the presence of the redox reagent. The different oxidation states are associated with different coordination numbers between the reversible crosslinking agent and the ionic species contained in the polymer. This difference provides reversible ionic crosslinking. The polymer may be selected from polyurethanes (including segmented and non-segmented polyurethanes), polyacrylates, or polyamides, for example. These polymers are useful for many commercial applications, including coatings and polymer parts.