利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

10 条记录 (耗时 0.016 秒)

    Thermal Imager Using Metamaterials
    3.
    发明申请
    Thermal Imager Using Metamaterials 有权
    热成像仪使用超材料

    公开(公告)号：US20120261575A1

    公开(公告)日：2012-10-18

    申请号：US13252821

    申请日：2011-10-04

    申请人： Richard Averitt ,  Xin Zhang ,  Hu Tao ,  Andrew Strikwerda ,  Willie J. Padilla ,  Eric Shaner

    发明人： Richard Averitt ,  Xin Zhang ,  Hu Tao ,  Andrew Strikwerda ,  Willie J. Padilla ,  Eric Shaner

    IPC分类号： H01L27/146 ,  G01J5/08

    CPC分类号： H01L27/1446 ,  G01J3/42 ,  G01J5/0853 ,  G01J5/40 ,  H01L27/14649

    摘要： An apparatus and method are disclosed for detecting terahertz radiation at room temperature. A detecting pixel includes a sub-wavelength split-ring resonator, and is mechanically coupled to (but thermally decoupled from) a substrate via a cantilever formed from two materials that have a significant mismatch in their thermal expansion coefficients. Incident radiation causes the split-ring resonator to resonate, thereby generating heat that is transferred to the cantilever, causing the cantilever to flex. An optical readout system includes a secondary light source, such as a laser, that shines on a reflective surface on the pixel, whereby a photodiode detects the reflected light and permits calculation of a relative deflection of the pixel in the nanometer range. An exemplary detector has a noise equivalent power rating of approximately 60 pW/√Hz.

    摘要翻译： 公开了用于在室温下检测太赫兹辐射的装置和方法。 检测像素包括亚波长分离环谐振器，并且通过由两个材料形成的悬臂机械耦合（但是与基板热分解），所述悬臂由热膨胀系数具有显着不匹配的两种材料形成。 入射辐射导致开环谐振器谐振，从而产生传递到悬臂的热量，导致悬臂弯曲。 光学读出系统包括发光在像素上的反射表面上的诸如激光器的次级光源，由此光电二极管检测反射光并允许像素在纳米范围内的相对偏转的计算。 一个示例性的检测器具有大约60pW /√Hz的噪声等效额定功率。

    Dynamic frequency tuning of electric and magnetic metamaterial response
    6.
    发明授权
    Dynamic frequency tuning of electric and magnetic metamaterial response 有权
    电磁特性响应的动态频率调谐

    公开(公告)号：US08836439B2

    公开(公告)日：2014-09-16

    申请号：US11871642

    申请日：2007-10-12

    申请人： John F. O'Hara ,  Richard Averitt ,  Willie Padilla ,  Hou-Tong Chen

    发明人： John F. O'Hara ,  Richard Averitt ,  Willie Padilla ,  Hou-Tong Chen

    IPC分类号： H01P7/08 ,  H01Q15/00 ,  H03J1/00 ,  H03C7/02

    CPC分类号： H01P7/08 ,  H01Q15/0086 ,  H03C7/02 ,  H03J1/00

    摘要： A geometrically modifiable resonator is comprised of a resonator disposed on a substrate, and a means for geometrically modifying the resonator. The geometrically modifiable resonator can achieve active optical and/or electronic control of the frequency response in metamaterials and/or frequency selective surfaces, potentially with sub-picosecond response times. Additionally, the methods taught here can be applied to discrete geometrically modifiable circuit components such as inductors and capacitors. Principally, controlled conductivity regions, using either reversible photodoping or voltage induced depletion activation, are used to modify the geometries of circuit components, thus allowing frequency tuning of resonators without otherwise affecting the bulk substrate electrical properties. The concept is valid over any frequency range in which metamaterials are designed to operate.

    摘要翻译： 几何可修改的谐振器由设置在基板上的谐振器和用于几何校正谐振器的装置组成。 几何可修改的谐振器可以实现对超材料和/或频率选择表面的频率响应的有源光学和/或电子控制，潜在地具有次皮秒响应时间。 另外，这里教导的方法可以应用于离散几何可修改的电路部件，如电感器和电容器。 主要地，使用可逆光电二极管或电压诱导耗尽激活的受控导电区域用于修改电路部件的几何形状，从而允许谐振器的频率调谐，而不影响体衬底的电性能。 该概念在超材料设计运行的任何频率范围内均有效。

    Thermal imager using metamaterials
    7.
    发明授权
    Thermal imager using metamaterials 有权
    热成像仪使用超材料

    公开(公告)号：US08450690B2

    公开(公告)日：2013-05-28

    申请号：US13252821

    申请日：2011-10-04

    申请人： Richard Averitt ,  Xin Zhang ,  Hu Tao ,  Andrew Strikwerda ,  Willie J. Padilla ,  Eric Shaner

    发明人： Richard Averitt ,  Xin Zhang ,  Hu Tao ,  Andrew Strikwerda ,  Willie J. Padilla ,  Eric Shaner

    IPC分类号： G01J5/02

    CPC分类号： H01L27/1446 ,  G01J3/42 ,  G01J5/0853 ,  G01J5/40 ,  H01L27/14649

    摘要： An apparatus and method are disclosed for detecting terahertz radiation at room temperature. A detecting pixel includes a sub-wavelength split-ring resonator, and is mechanically coupled to (but thermally decoupled from) a substrate via a cantilever formed from two materials that have a significant mismatch in their thermal expansion coefficients. Incident radiation causes the split-ring resonator to resonate, thereby generating heat that is transferred to the cantilever, causing the cantilever to flex. An optical readout system includes a secondary light source, such as a laser, that shines on a reflective surface on the pixel, whereby a photodiode detects the reflected light and permits calculation of a relative deflection of the pixel in the nanometer range. An exemplary detector has a noise equivalent power rating of approximately 60 pW/√Hz.

    摘要翻译： 公开了用于在室温下检测太赫兹辐射的装置和方法。 检测像素包括亚波长分离环谐振器，并且通过由两个材料形成的悬臂机械耦合（但是与基板热分解），所述悬臂由热膨胀系数具有显着不匹配的两种材料形成。 入射辐射导致开环谐振器谐振，从而产生传递到悬臂的热量，导致悬臂弯曲。 光学读出系统包括发光在像素上的反射表面上的诸如激光器的次级光源，由此光电二极管检测反射光并允许像素在纳米范围内的相对偏转的计算。 一个示例性的检测器具有大约60pW /√Hz的噪声等效额定功率。

    DYNAMIC FREQUENCY TUNING OF ELECTRIC AND MAGNETIC METAMATERIAL RESPONSE
    9.
    发明申请
    DYNAMIC FREQUENCY TUNING OF ELECTRIC AND MAGNETIC METAMATERIAL RESPONSE 有权
    电动和电磁元件响应的动态频率调谐

    公开(公告)号：US20090096545A1

    公开(公告)日：2009-04-16

    申请号：US11871642

    申请日：2007-10-12

    申请人： John F. O'Hara ,  Richard Averitt ,  Willie Padilla ,  Hou-Tong Chen

    发明人： John F. O'Hara ,  Richard Averitt ,  Willie Padilla ,  Hou-Tong Chen

    IPC分类号： H03C7/02 ,  H01P11/00 ,  H01P7/00

    CPC分类号： H01P7/08 ,  H01Q15/0086 ,  H03C7/02 ,  H03J1/00

    摘要： A geometrically modifiable resonator is comprised of a resonator disposed on a substrate, and a means for geometrically modifying the resonator. The geometrically modifiable resonator can achieve active optical and/or electronic control of the frequency response in metamaterials and/or frequency selective surfaces, potentially with sub-picosecond response times. Additionally, the methods taught here can be applied to discrete geometrically modifiable circuit components such as inductors and capacitors. Principally, controlled conductivity regions, using either reversible photodoping or voltage induced depletion activation, are used to modify the geometries of circuit components, thus allowing frequency tuning of resonators without otherwise affecting the bulk substrate electrical properties. The concept is valid over any frequency range in which metamaterials are designed to operate.

    摘要翻译： 几何可修改的谐振器由设置在基板上的谐振器和用于几何校正谐振器的装置组成。 几何可修改的谐振器可以实现对超材料和/或频率选择表面的频率响应的有源光学和/或电子控制，潜在地具有次皮秒响应时间。 另外，这里教导的方法可以应用于离散几何可修改的电路部件，如电感器和电容器。 主要地，使用可逆光电二极管或电压诱导耗尽激活的受控导电区域用于修改电路部件的几何形状，从而允许谐振器的频率调谐，而不影响体衬底的电性能。 该概念在超材料设计运行的任何频率范围内均有效。