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公开(公告)号:US20080112034A1
公开(公告)日:2008-05-15
申请号:US11560129
申请日:2006-11-15
申请人: Peter Bermel , John D. Joannopoulos
发明人: Peter Bermel , John D. Joannopoulos
CPC分类号: H01P1/181 , G02F1/0305 , G02F2202/32
摘要: A phase shifter includes at least one photonic crystal structure having alternating high and low index dielectric layers. At least two defect structures are positioned between said photonic crystal structures. The defect structure includes one or more nonlinear materials used to produce an index change, whose effect is amplified to produce a specified phase shift in the output signal of said phase shifter.
摘要翻译: 移相器包括具有交替的高和低折射率电介质层的至少一个光子晶体结构。 至少两个缺陷结构位于所述光子晶体结构之间。 缺陷结构包括用于产生指数变化的一种或多种非线性材料,其效应被放大以在所述移相器的输出信号中产生规定的相移。
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公开(公告)号:US09057830B2
公开(公告)日:2015-06-16
申请号:US13186159
申请日:2011-07-19
申请人: Rafif E. Hamam , Peter Bermel , Ivan Celanovic , Marin Soljacic , Adrian Y. X. Yeng , Michael Ghebrebrhan , John D. Joannopoulos
发明人: Rafif E. Hamam , Peter Bermel , Ivan Celanovic , Marin Soljacic , Adrian Y. X. Yeng , Michael Ghebrebrhan , John D. Joannopoulos
IPC分类号: G02B27/42 , H01L31/0232 , G02B6/122 , B82Y20/00 , H01L31/0216 , H02S10/30
CPC分类号: G02B6/1225 , B82Y20/00 , H01L31/02168 , H02S10/30 , Y02E10/50
摘要: The present invention provides systems, articles, and methods for discriminating electromagnetic radiation based upon the angle of incidence of the electromagnetic radiation. In some cases, the materials and systems described herein can be capable of inhibiting reflection of electromagnetic radiation (e.g., the materials and systems can be capable of transmitting and/or absorbing electromagnetic radiation) within a given range of angles of incidence at a first incident surface, while substantially reflecting electromagnetic radiation outside the range of angles of incidence at a second incident surface (which can be the same as or different from the first incident surface). A photonic material comprising a plurality of periodically occurring separate domains can be used, in some cases, to selectively transmit and/or selectively absorb one portion of incoming electromagnetic radiation while reflecting another portion of incoming electromagnetic radiation, based upon the angle of incidence. In some embodiments, one domain of the photonic material can include an isotropic dielectric function, while another domain of the photonic material can include an anisotropic dielectric function. In some instances, one domain of the photonic material can include an isotropic magnetic permeability, while another domain of the photonic material can include an anisotropic magnetic permeability. In some embodiments, non-photonic materials (e.g., materials with relatively large scale features) can be used to selectively absorb incoming electromagnetic radiation based on angle of incidence.
摘要翻译: 本发明提供了用于基于电磁辐射的入射角鉴别电磁辐射的系统,物品和方法。 在一些情况下,本文描述的材料和系统能够抑制电磁辐射的反射(例如,材料和系统能够在第一次事件的给定入射角范围内传播和/或吸收电磁辐射) 同时在第二入射表面(其可以与第一入射表面相同或不同)的入射角范围之外基本上反射电磁辐射。 可以使用包括多个周期性发生的分离区域的光子材料,在某些情况下,可以基于入射角来选择性地传输和/或选择性地吸收一部分进入的电磁辐射,同时反射入射电磁辐射的另一部分。 在一些实施例中,光子材料的一个区域可以包括各向同性介电函数,而光子材料的另一个畴可以包括各向异性介电函数。 在一些情况下,光子材料的一个畴可以包括各向同性磁导率,而光子材料的另一个畴可以包括各向异性的磁导率。 在一些实施例中,非光子材料(例如,具有相对较大尺度特征的材料)可用于基于入射角选择性地吸收进入的电磁辐射。
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公开(公告)号:US07532384B2
公开(公告)日:2009-05-12
申请号:US11560129
申请日:2006-11-15
申请人: Peter Bermel , John D. Joannopoulos
发明人: Peter Bermel , John D. Joannopoulos
CPC分类号: H01P1/181 , G02F1/0305 , G02F2202/32
摘要: A phase shifter includes at least one photonic crystal structure having alternating high and low index dielectric layers. At least two defect structures are positioned between said photonic crystal structures. The defect structure includes one or more nonlinear materials used to produce an index change, whose effect is amplified to produce a specified phase shift in the output signal of said phase shifter.
摘要翻译: 移相器包括具有交替的高和低折射率电介质层的至少一个光子晶体结构。 至少两个缺陷结构位于所述光子晶体结构之间。 缺陷结构包括用于产生指数变化的一种或多种非线性材料,其效应被放大以在所述移相器的输出信号中产生规定的相移。
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公开(公告)号:US20110284059A1
公开(公告)日:2011-11-24
申请号:US13112831
申请日:2011-05-20
申请人: Ivan Celanovic , Walker Chan , Peter Bermel , Adrian Y.X. Yeng , Christopher Marton , Michael Ghebrebrhan , Mohammad Araghchini , Klavs F. Jensen , Marin Soljacic , John D. Joannopoulos , Steven G. Johnson , Robert Pilawa-Podgurski , Peter Fisher
发明人: Ivan Celanovic , Walker Chan , Peter Bermel , Adrian Y.X. Yeng , Christopher Marton , Michael Ghebrebrhan , Mohammad Araghchini , Klavs F. Jensen , Marin Soljacic , John D. Joannopoulos , Steven G. Johnson , Robert Pilawa-Podgurski , Peter Fisher
CPC分类号: G05F1/67 , F23C2900/03001 , F23M2900/13004 , H02S10/30
摘要: Inventive systems and methods for the generation of energy using thermophotovoltaic cells are described. Also described are systems and methods for selectively emitting electromagnetic radiation from an emitter for use in thermophotovoltaic energy generation systems. In at least some of the inventive energy generation systems and methods, a voltage applied to the thermophotovoltaic cell (e.g., to enhance the power produced by the cell) can be adjusted to enhance system performance. Certain embodiments of the systems and methods described herein can be used to generate energy relatively efficiently.
摘要翻译: 描述了使用热光伏电池产生能量的本发明的系统和方法。 还描述了用于选择性地从用于热光伏能量产生系统的发射器发射电磁辐射的系统和方法。 在至少一些本发明的能量产生系统和方法中,可以调节施加到热光伏电池的电压(例如,以增强由电池产生的功率),以增强系统性能。 本文所述的系统和方法的某些实施例可以用于相对有效地产生能量。
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公开(公告)号:US20100258174A1
公开(公告)日:2010-10-14
申请号:US12423405
申请日:2009-04-14
IPC分类号: H01L31/0232 , H01L31/18
CPC分类号: H01L31/02168 , G02B1/115 , Y02E10/50
摘要: A solar cell includes a thin film photovoltaic material structure used in absorbing light of a selective bandwidth. A multitude of dielectric front coatings are positioned on the thin film photovoltaic material structure so as to maximize admittance over the selected bandwidth. The thicknesses and indices of each of the front coatings are chosen by a global-optimization procedure to maximize the short-circuit current of the solar cell.
摘要翻译: 太阳能电池包括用于吸收选择性带宽的光的薄膜光伏材料结构。 多个电介质前涂层位于薄膜光伏材料结构上,以便使所选带宽上的导纳最大化。 通过全局优化程序选择每个前涂层的厚度和指数,以使太阳能电池的短路电流最大化。
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公开(公告)号:US09116537B2
公开(公告)日:2015-08-25
申请号:US13112831
申请日:2011-05-20
申请人: Ivan Celanovic , Walker Chan , Peter Bermel , Adrian Y. X. Yeng , Christopher Marton , Michael Ghebrebrhan , Mohammad Araghchini , Klavs F. Jensen , Marin Soljacic , John D. Joannopoulos , Steven G. Johnson , Robert Pilawa-Podgurski , Peter Fisher
发明人: Ivan Celanovic , Walker Chan , Peter Bermel , Adrian Y. X. Yeng , Christopher Marton , Michael Ghebrebrhan , Mohammad Araghchini , Klavs F. Jensen , Marin Soljacic , John D. Joannopoulos , Steven G. Johnson , Robert Pilawa-Podgurski , Peter Fisher
CPC分类号: G05F1/67 , F23C2900/03001 , F23M2900/13004 , H02S10/30
摘要: Inventive systems and methods for the generation of energy using thermophotovoltaic cells are described. Also described are systems and methods for selectively emitting electromagnetic radiation from an emitter for use in thermophotovoltaic energy generation systems. In at least some of the inventive energy generation systems and methods, a voltage applied to the thermophotovoltaic cell (e.g., to enhance the power produced by the cell) can be adjusted to enhance system performance. Certain embodiments of the systems and methods described herein can be used to generate energy relatively efficiently.
摘要翻译: 描述了使用热光伏电池产生能量的本发明的系统和方法。 还描述了用于选择性地从用于热光伏能量产生系统的发射器发射电磁辐射的系统和方法。 在至少一些本发明的能量产生系统和方法中,可以调节施加到热光伏电池的电压(例如,以增强由电池产生的功率),以增强系统性能。 本文所述的系统和方法的某些实施例可以用于相对有效地产生能量。
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公开(公告)号:US20120037217A1
公开(公告)日:2012-02-16
申请号:US13186159
申请日:2011-07-19
申请人: Rafif E. Hamam , Peter Bermel , Ivan Celanovic , Marin Soljacic , Adrian Y.X. Yeng , Michael Ghebrebrhan , John D. Joannopoulos
发明人: Rafif E. Hamam , Peter Bermel , Ivan Celanovic , Marin Soljacic , Adrian Y.X. Yeng , Michael Ghebrebrhan , John D. Joannopoulos
IPC分类号: H01L31/0232 , H01L31/04 , G02B27/42
CPC分类号: G02B6/1225 , B82Y20/00 , H01L31/02168 , H02S10/30 , Y02E10/50
摘要: The present invention provides systems, articles, and methods for discriminating electromagnetic radiation based upon the angle of incidence of the electromagnetic radiation. In some cases, the materials and systems described herein can be capable of inhibiting reflection of electromagnetic radiation (e.g., the materials and systems can be capable of transmitting and/or absorbing electromagnetic radiation) within a given range of angles of incidence at a first incident surface, while substantially reflecting electromagnetic radiation outside the range of angles of incidence at a second incident surface (which can be the same as or different from the first incident surface). A photonic material comprising a plurality of periodically occurring separate domains can be used, in some cases, to selectively transmit and/or selectively absorb one portion of incoming electromagnetic radiation while reflecting another portion of incoming electromagnetic radiation, based upon the angle of incidence. In some embodiments, one domain of the photonic material can include an isotropic dielectric function, while another domain of the photonic material can include an anisotropic dielectric function. In some instances, one domain of the photonic material can include an isotropic magnetic permeability, while another domain of the photonic material can include an anisotropic magnetic permeability. In some embodiments, non-photonic materials (e.g., materials with relatively large scale features) can be used to selectively absorb incoming electromagnetic radiation based on angle of incidence.
摘要翻译: 本发明提供了用于基于电磁辐射的入射角鉴别电磁辐射的系统,物品和方法。 在一些情况下,本文描述的材料和系统能够抑制电磁辐射的反射(例如,材料和系统能够在第一次事件的给定入射角范围内传播和/或吸收电磁辐射) 同时在第二入射表面(其可以与第一入射表面相同或不同)的入射角范围之外基本上反射电磁辐射。 可以使用包括多个周期性发生的分离区域的光子材料,在某些情况下,可以基于入射角来选择性地传输和/或选择性地吸收一部分进入的电磁辐射,同时反射入射电磁辐射的另一部分。 在一些实施例中,光子材料的一个区域可以包括各向同性介电函数,而光子材料的另一个畴可以包括各向异性介电函数。 在一些情况下,光子材料的一个畴可以包括各向同性磁导率,而光子材料的另一个畴可以包括各向异性的磁导率。 在一些实施例中,非光子材料(例如,具有相对较大尺度特征的材料)可用于基于入射角选择性地吸收进入的电磁辐射。
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公开(公告)号:US20180159460A1
公开(公告)日:2018-06-07
申请号:US15833027
申请日:2017-12-06
IPC分类号: H02S10/30
CPC分类号: H02S10/30
摘要: An apparatus for generating electricity via thermophotovoltaic (TPV) energy conversion includes a metallic combustor to convert fuel into heat. The apparatus also includes a metallic photonic crystal to emit electromagnetic radiation within a predetermined wavelength band in response to receiving the heat from the combustor. A brazing layer is disposed between the combustor and the photonic crystal to couple the combustor with the photonic crystal. The apparatus also includes a photovoltaic cell, in electromagnetic communication with the photonic crystal, to convert the electromagnetic radiation emitted by the photonic crystal into electricity.
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公开(公告)号:US08400024B2
公开(公告)日:2013-03-19
申请号:US12649973
申请日:2009-12-30
IPC分类号: H04B5/00
CPC分类号: H02J50/12 , B60L11/18 , B60L11/182 , H01F38/14 , H01Q9/04 , H02J5/005 , H02J17/00 , Y02T10/7005 , Y02T10/7072 , Y02T10/7088 , Y02T90/122 , Y02T90/14 , Y10T307/25
摘要: Described herein are embodiments of transferring electromagnetic energy that includes a first electromagnetic resonator receiving energy from an external power supply, said first resonator having a resonant frequency ω1, an intrinsic loss rate Γ1, and a first Q-factor Q1=ω1L1/(R1ohm+R1rad), generating an oscillating near field region, a second electromagnetic resonator being positioned at variable distances from said first resonator and not electrically wired to said first resonator, said second resonator having a resonant frequency ω2, an intrinsic loss rate Γ2, and a second Q-factor Q2=ω2L2/(R2ohm+R2rad). Electromagnetic energy may be transferred from said first resonator to said second resonator over a variable distance D that may be within the near-field region of the first resonator structure, and wherein R1ohm>R1rad, and R2ohm>R2rad.
摘要翻译: 这里描述的是传送电磁能的实施例,其包括从外部电源接收能量的第一电磁谐振器,所述第一谐振器具有谐振频率ω1,固有损耗率&Ggr1和第一Q因子Q1 =ω1L1/( R1ohm + R1rad),产生振荡近场区域,第二电磁谐振器位于距离所述第一谐振器可变距离并且不电连接到所述第一谐振器,所述第二谐振器具有谐振频率ω2,固有损耗率Ggr2 ,第二Q因子Q2 =ω2L2/(R2ohm + R2rad)。 电磁能量可以通过可能在第一谐振器结构的近场区域内的可变距离D从所述第一谐振器传递到所述第二谐振器,并且其中R1ohm> R1rad和R2ohm> R2rad。
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公开(公告)号:US08400021B2
公开(公告)日:2013-03-19
申请号:US12639972
申请日:2009-12-16
CPC分类号: H02J50/12 , B60L11/18 , B60L11/182 , H01F38/14 , H01Q9/04 , H02J5/005 , H02J17/00 , Y02T10/7005 , Y02T10/7072 , Y02T10/7088 , Y02T90/122 , Y02T90/14 , Y10T307/25
摘要: Described herein are embodiments of transferring electromagnetic energy that includes a first electromagnetic resonator structure receiving energy from an external power supply, said first resonator structure may have a first mode with a resonant frequency ω1, an intrinsic loss rate Γ1, and a first Q-factor Q1=ω1L1/R1ohm+R1rad). A second electromagnetic resonator structure being positioned distal from said first resonator structure and not electrically wired to the first resonator structure, said second resonator structure having a second mode with a resonant frequency ω2, an intrinsic loss rate Γ2, and a second Q-factor Q2=ω2L2/(R2ohm+R2rad). The electromagnetic energy may be transferred from said first resonator structure to said second resonator structure over a distance D that is smaller than each of the resonant wavelengths λ1 and λ2 corresponding to the resonant frequencies ω1 and ω2, respectively, where the characteristic sizes of the resonator structures are less than the resonant wavelengths and where Q1>100, Q2>100, R1ohm>R1rad, and R2ohm>R2rad.
摘要翻译: 这里描述的是传送电磁能的实施例,其包括从外部电源接收能量的第一电磁谐振器结构,所述第一谐振器结构可以具有谐振频率ω1,固有损耗率Ggr1和第一Q 因子Q1 =ω1L1/(R1ohm + R1rad)。 第二电磁谐振器结构位于远离所述第一谐振器结构并且不电连接到第一谐振器结构的位置处,所述第二谐振器结构具有第二模式,具有谐振频率ω2,固有损耗率Ggr2和第二Q- 因子Q2 =ω2L2/(R2ohm + R2rad)。 可以将电磁能量从所述第一谐振器结构传递到所述第二谐振器结构,该距离D分别小于对应于谐振频率ω1和ω2的谐振频率ω1和ω2中的每一个,其中谐振器的特征尺寸 结构小于谐振波长,其中Q1> 100,Q2> 100,R1ohm> R1rad和R2ohm> R2rad。
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