公开(公告)号：US20150192329A1

公开(公告)日：2015-07-09

申请号：US14151408

申请日：2014-01-09

Applicant: Raytheon Company

Inventor： Theodore J. Conrad ,  Michael J. Ellis ,  Lowell A. Bellis ,  James R. Chow ,  Brian R. Schaefer ,  Troy T. Matsuoka

IPC: F25B9/14

CPC classification number: F25B9/14 ,  F25B9/10 ,  F25B9/145 ,  F25B2309/003 ,  F25B2309/1415

Abstract: An apparatus includes a regenerator configured to transfer heat to a fluid and to absorb heat from the fluid as the fluid flows between a warm end and a cold end of a cryocooler. The regenerator includes an anisotropic thermal layer configured to reduce a flow of heat axially along the regenerator and to spread the absorbed heat radially or laterally in a plane of the anisotropic thermal layer. The anisotropic thermal layer includes at least one allotropic form of carbon. The anisotropic thermal layer could have a higher radial or lateral thermal conductivity and a lower axial thermal conductivity. The anisotropic thermal layer could include carbon nanotubes and/or graphene. The regenerator could include multiple anisotropic thermal layers that divide the regenerator into multiple segments, where the anisotropic thermal layers are configured to reduce heat transfer between adjacent segments of the regenerator.

Abstract translation: 一种装置包括再生器，其被配置为当流体在低温冷却器的暖端和冷端之间流动时，将热量传递给流体并吸收来自流体的热量。 再生器包括各向异性热层，其被配置为沿着再生器轴向减小热量流并且在各向异性热层的平面内径向或横向扩散吸收的热量。 各向异性热层包括至少一种同素异形体的碳。 各向异性热层可具有更高的径向或横向热导率和较低的轴向热导率。 各向异性热层可以包括碳纳米管和/或石墨烯。 再生器可以包括将再生器分成多个段的多个各向异性热层，其中各向异性热层被配置为减少再生器的相邻段之间的热传递。

公开(公告)号：US20150076373A1

公开(公告)日：2015-03-19

申请号：US14548135

申请日：2014-11-19

Applicant: Raytheon Company

Inventor： James R. Chow ,  Kurt S. Ketola ,  David M. La Komski ,  Carl W. Townsend ,  William E. Elias ,  Stuart J. Marble

IPC: G01J3/10

CPC classification number: G01J5/522 ,  H01L29/0673 ,  H01L51/0048 ,  Y10S977/949

Abstract: An apparatus, method and thin-film structure for producing a blackbody spectrum is disclosed. A first layer of the apparatus is configured to generate heat in response to an applied voltage. A second layer is configured to emit the blackbody radiation spectrum in response to the heat from the first layer. A thermal spreading layer is disposed between the first layer and the second layer. The thermal spreading layer includes a graphene sheet for reducing a spatial variation of the heat in a plane of the thermal spreading layer.

Abstract translation: 公开了用于制造黑体光谱的装置，方法和薄膜结构。 该装置的第一层被配置为响应于所施加的电压产生热量。 第二层被配置为响应于来自第一层的热量发射黑体辐射光谱。 热扩散层设置在第一层和第二层之间。 热扩散层包括用于减小热扩散层的平面中的热的空间变化的石墨烯片。

公开(公告)号：US20140339407A1

公开(公告)日：2014-11-20

申请号：US13894953

申请日：2013-05-15

Applicant: Raytheon Company

Inventor： James R. Chow ,  Bruce Hirano ,  David M. La Komski

IPC: G01J5/52

CPC classification number: G01J5/522 ,  B82Y20/00 ,  G01J5/0878 ,  H01L51/0048

Abstract: An apparatus and method of calibrating a sensor is disclosed. A voltage is applied to a first carbon nanotube layer to obtain a first temperature of the first carbon nanotube layer. A thermally conductive layer is used to provide a substantially uniform temperature related to the first temperature of the first carbon nanotube layer by smoothing a spatial variation of the first temperature. A second carbon nanotube layer receives the substantially uniform temperature and emits a first blackbody radiation spectrum to calibrate the sensor. The apparatus may be used to emit a second black body radiation spectrum by altering the applied voltage.

Abstract translation: 公开了一种校准传感器的装置和方法。 向第一碳纳米管层施加电压以获得第一碳纳米管层的第一温度。 通过平滑第一温度的空间变化，使用导热层来提供与第一碳纳米管层的第一温度相关的基本均匀的温度。 第二碳纳米管层接收基本均匀的温度并发射第一黑体辐射谱以校准传感器。 该装置可以用于通过改变所施加的电压来发射第二黑体辐射光谱。

公开(公告)号：US11072023B2

公开(公告)日：2021-07-27

申请号：US15423961

申请日：2017-02-03

Applicant: Raytheon Company

Inventor： Theodore J. Conrad ,  James R. Chow ,  Craig A. Armiento ,  William E. Elias

IPC: F25B9/14 ,  B22F9/24 ,  B01J19/12 ,  F28F13/18 ,  F28F21/02 ,  B22F1/00 ,  C09D11/037 ,  C09D11/322 ,  C09D11/52 ,  F25B9/00 ,  F28F19/02 ,  B41J2/01 ,  B33Y10/00 ,  B33Y80/00 ,  F28D21/00

Abstract: An apparatus includes a heat exchanger configured to transfer heat to a fluid and to absorb heat from the fluid as the fluid flows between a warm end and a cold end of a cryocooler. The heat exchanger includes at least one section having a substrate of at least one allotropic form of carbon and a layer of nanoparticles on or over the substrate. The heat exchanger could include multiple sections, and each section could include one of multiple substrates and one of multiple layers of nanoparticles. The heat exchanger can further include pores through the multiple sections of the heat exchanger, where the pores are configured to allow the fluid to flow through the heat exchanger and to contact the substrates and the layers of nanoparticles. The nanoparticles could include at least one lanthanide element or alloy, and the substrate could include carbon nanotubes or graphene.

公开(公告)号：US10711188B2

公开(公告)日：2020-07-14

申请号：US15711180

申请日：2017-09-21

Applicant: Raytheon Company

Inventor： Stephanie J. Lin ,  James R. Chow ,  Kalin Spariosu

IPC: C09K11/66 ,  H01L33/50 ,  F21K9/64 ,  F21V7/22 ,  C09K11/54 ,  C09K11/88 ,  C09K11/02 ,  C01B17/20 ,  C01B19/00 ,  C09K11/56 ,  C01G21/21 ,  H01L31/0352 ,  B82Y20/00 ,  F21Y115/10 ,  B82Y40/00

Abstract: In certain embodiments, a first semiconductor material is vaporized to generate a vapor phase condensate. The vapor phase condensate is allowed to form nanoparticles. The nanoparticles are annealed to yield nanoparticles or cores. The cores are overcoated by introducing a solution containing second semiconductor material precursors in a coordinating solvent into a suspension of cores at a desired elevated temperature and mixing for a period of time sufficient to cause diffusion of the shell into the core. The diffusion of the shell into the core causes the quantum dots to exhibit a broadened optical emission. The produced quantum dots may be incorporated into a quantum dot based radiation source.

公开(公告)号：US10473581B2

公开(公告)日：2019-11-12

申请号：US15984012

申请日：2018-05-18

Applicant: Raytheon Company

Inventor： James R. Chow ,  Kalin Spariosu ,  Stephanie Lin ,  Kurt S. Ketola ,  Tom Huang ,  Edward Ward, Jr.

IPC: G01N21/27 ,  G01N21/35 ,  G01J3/28 ,  G01N21/359

Abstract: A light source, calibration device and method of calibrating an imaging device is disclose. The calibration device includes the light source which includes an ultraviolet light layer that, in operation, generates ultraviolet light, and a quantum dot layer that absorbs the ultraviolet light and, in response, generates radiation within the near infrared region at a selected intensity. The near infrared light is received at the selected intensity at the imaging device and a sensitivity of the imaging device is altered to detect the near infrared light at the selected intensity provided by the light source.

公开(公告)号：US10455736B2

公开(公告)日：2019-10-22

申请号：US15657019

申请日：2017-07-21

Applicant: Raytheon Company

Inventor： Stephanie Lin ,  James R. Chow ,  Carl W. Townsend

IPC: H05K7/20 ,  C25D3/38 ,  C25D3/46 ,  C25D7/06 ,  C25D7/00 ,  G06F17/50 ,  H01L23/373 ,  B64G1/50 ,  C25D5/54 ,  F28F21/02 ,  H01L23/367

Abstract: A graphene strip includes a plurality of graphene strips, a metal additive and a binding material is provided. The plurality of graphene strips include strips of graphene nanoplatelets. The metal additive is applied to each of the plurality of graphene strips. The binding material couples the plurality of graphene strips together.

公开(公告)号：US20190085238A1

公开(公告)日：2019-03-21

申请号：US15711180

申请日：2017-09-21

Applicant: Raytheon Company

Inventor： Stephanie J. Lin ,  James R. Chow ,  Kalin Spariosu

IPC: C09K11/66 ,  H01L33/50 ,  F21K9/64 ,  F21V7/22 ,  C09K11/54

CPC classification number: C09K11/662 ,  B82Y20/00 ,  B82Y40/00 ,  C01B17/20 ,  C01B19/007 ,  C01G21/21 ,  C01P2002/84 ,  C01P2004/64 ,  C01P2004/84 ,  C01P2006/60 ,  C09K11/025 ,  C09K11/54 ,  C09K11/565 ,  C09K11/883 ,  F21K9/64 ,  F21V7/22 ,  F21Y2115/10 ,  H01L31/035218 ,  H01L33/502 ,  H01L2933/0041 ,  Y10S977/774 ,  Y10S977/825 ,  Y10S977/892 ,  Y10S977/95

Abstract: In certain embodiments, a first semiconductor material is vaporized to generate a vapor phase condensate. The vapor phase condensate is allowed to form nanoparticles. The nanoparticles are annealed to yield nanoparticles or cores. The cores are overcoated by introducing a solution containing second semiconductor material precursors in a coordinating solvent into a suspension of cores at a desired elevated temperature and mixing for a period of time sufficient to cause diffusion of the shell into the core. The diffusion of the shell into the core causes the quantum dots to exhibit a broadened optical emission. The produced quantum dots may be incorporated into a quantum dot based radiation source.

公开(公告)号：US10139287B2

公开(公告)日：2018-11-27

申请号：US14884459

申请日：2015-10-15

Applicant: RAYTHEON COMPANY

Inventor： James R. Chow ,  Carl W. Townsend ,  Kurt S. Ketola

IPC: G01K15/00 ,  G01J5/52 ,  C01B32/158 ,  G01K7/02

Abstract: A thin-film device for generating a blackbody spectrum is disclosed. The device includes first layer configured to generate heat in response to an applied voltage and a second layer configured to generate the blackbody radiation spectrum in response to the heat from the first layer. A thermocouple is disposed between the first layer and the second layer for measuring a temperature at the second layer. The thermocouple measures temperature at the second layer in order to control temperature at the second layer. The thermocouple can be a copper-carbon nanotube thermocouple.

公开(公告)号：US20180180329A9

公开(公告)日：2018-06-28

申请号：US15423961

申请日：2017-02-03

Applicant: Raytheon Company

Inventor： Theodore J. Conrad ,  James R. Chow ,  Craig A. Armiento ,  William E. Elias

IPC: F25B9/14 ,  B41J2/01 ,  B22F9/24 ,  B22F1/00 ,  B33Y10/00 ,  B33Y80/00 ,  F28F13/18 ,  F28F21/02

CPC classification number: F25B9/145 ,  B01J19/123 ,  B22F1/0018 ,  B22F9/24 ,  B22F2202/11 ,  B22F2999/00 ,  B33Y10/00 ,  B33Y80/00 ,  B41J2/01 ,  C09D11/037 ,  C09D11/322 ,  C09D11/52 ,  F25B9/00 ,  F25B2309/1412 ,  F25B2309/1415 ,  F28D2021/0033 ,  F28F13/18 ,  F28F13/185 ,  F28F19/02 ,  F28F21/02 ,  F28F2245/00 ,  F28F2255/20

Abstract: An apparatus includes a heat exchanger configured to transfer heat to a fluid and to absorb heat from the fluid as the fluid flows between a warm end and a cold end of a cryocooler. The heat exchanger includes at least one section having a substrate of at least one allotropic form of carbon and a layer of nanoparticles on or over the substrate. The heat exchanger could include multiple sections, and each section could include one of multiple substrates and one of multiple layers of nanoparticles. The heat exchanger can further include pores through the multiple sections of the heat exchanger, where the pores are configured to allow the fluid to flow through the heat exchanger and to contact the substrates and the layers of nanoparticles. The nanoparticles could include at least one lanthanide element or alloy, and the substrate could include carbon nanotubes or graphene.