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212 条记录 (耗时 0.044 秒)

    Raman signal-enhancing structures and Raman spectroscopy systems including such structures
    61.
    发明授权
    Raman signal-enhancing structures and Raman spectroscopy systems including such structures 有权
    包括这种结构的拉曼信号增强结构和拉曼光谱系统

    公开(公告)号：US07391511B1

    公开(公告)日：2008-06-24

    申请号：US11700986

    申请日：2007-01-31

    申请人： Alexandre M. Bratkovski ,  Shih-Yuan Wang ,  Zhiyong Li

    发明人： Alexandre M. Bratkovski ,  Shih-Yuan Wang ,  Zhiyong Li

    IPC分类号： G01J3/44 ,  G01N21/65

    CPC分类号： G01N21/658

    摘要： A Raman signal-enhancing structure includes a substrate and a plurality of protrusions located at predetermined positions relative to a surface of the substrate. Each protrusion includes a Raman signal-enhancing material and has cross-sectional dimensions of less than about 50 nanometers. The structure also includes an edge that includes an intersection between two nonparallel surfaces of at least one protrusion. A Raman spectroscopy system includes such a Raman signal-enhancing structure, and Raman spectroscopy may be performed on an analyte using such structures and systems. A method for forming such a Raman signal-enhancing structure includes nanoimprint lithography.

    摘要翻译： 拉曼信号增强结构包括基板和位于相对于基板的表面的预定位置处的多个突起。 每个突起包括拉曼信号增强材料并且具有小于约50纳米的横截面尺寸。 该结构还包括边缘，其包括至少一个突起的两个不平行表面之间的交叉点。 拉曼光谱系统包括这样的拉曼信号增强结构，并且可以使用这种结构和系统对分析物进行拉曼光谱。 形成这种拉曼信号增强结构的方法包括纳米压印光刻。

    Fresnel antenna
    66.
    发明授权
    Fresnel antenna 有权
    菲涅耳天线

    公开(公告)号：US07847236B2

    公开(公告)日：2010-12-07

    申请号：US11831275

    申请日：2007-07-31

    申请人： Alexandre M. Bratkovski ,  R. Stanley Williams ,  Shih-Yuan Wang

    发明人： Alexandre M. Bratkovski ,  R. Stanley Williams ,  Shih-Yuan Wang

    IPC分类号： G01D5/36

    CPC分类号： H01S5/50 ,  G02B5/008 ,  H01S3/1608 ,  H01S5/10 ,  H01S5/1046

    摘要： A Fresnel antenna includes a plurality of Fresnel elements spaced to selectively attenuate electromagnetic waves having a predetermined wavelength, selected wavelengths, or range of wavelengths, and to concentrate electromagnetic waves having a predetermined wavelength, selected wavelengths, or range of wavelengths other than the attenuated wavelengths.

    摘要翻译： 菲涅耳天线包括多个菲涅尔元件，间隔开以选择性地衰减具有预定波长，选定波长或波长范围的电磁波，并且将具有预定波长，选定波长或不同于衰减波长的波长范围的电磁波集中 。

    Negative index material-based modulators and methods for fabricating the same
    67.
    发明申请
    Negative index material-based modulators and methods for fabricating the same 有权
    负基于材料的调制剂及其制造方法

    公开(公告)号：US20100277789A1

    公开(公告)日：2010-11-04

    申请号：US12387169

    申请日：2009-04-29

    申请人： Wei Wu ,  Alexandre M. Bratkovski ,  Shih-Yuan Wang ,  Jingjing Li ,  Qiangfei Xia

    发明人： Wei Wu ,  Alexandre M. Bratkovski ,  Shih-Yuan Wang ,  Jingjing Li ,  Qiangfei Xia

    IPC分类号： G02F1/01 ,  H01B13/00 ,  C23C14/34 ,  B05D5/12

    CPC分类号： G02F1/01 ,  G02F3/02 ,  G02F2202/30 ,  Y10S977/762 ,  Y10S977/932 ,  Y10S977/949 ,  Y10S977/95

    摘要： Various embodiments of the present invention are directed to external, electronically controllable, negative index material-based modulators. In one aspect, an external modulator comprises a negative index material in electronic communication with an electronic signal source. The negative index material receives an electronic signal encoding data from the electronic signal source and an unmodulated carrier wave from an electromagnetic radiation source. Magnitude variations in the electronic signal produce corresponding effective refractive index changes in the negative index material encoding the data in the amplitude and/or phase of the carrier wave to produce an electromagnetic signal.

    摘要翻译： 本发明的各种实施方案涉及外部的，电子可控的，负指数材料的调节剂。 一方面，外部调制器包括与电子信号源电子通信的负索引材料。 负索引材料接收来自电子信号源的电子信号编码数据和来自电磁辐射源的未调制载波。 电子信号的幅度变化在编码载波的幅度和/或相位中的数据的负指数材料中产生对应的有效折射率变化，以产生电磁信号。

    Nanowire-based photodetectors
    68.
    发明授权
    Nanowire-based photodetectors 有权
    基于纳米线的光电探测器

    公开(公告)号：US07720326B2

    公开(公告)日：2010-05-18

    申请号：US11699291

    申请日：2007-01-29

    申请人： Wei Wu ,  Scott Corzine ,  Alexandre M. Bratkovski ,  Shih-Yuan Wang

    发明人： Wei Wu ,  Scott Corzine ,  Alexandre M. Bratkovski ,  Shih-Yuan Wang

    IPC分类号： G02B6/00 ,  H01L31/02

    CPC分类号： G02B6/12 ,  B82Y20/00 ,  G02B6/12007 ,  G02B2006/12138 ,  G02B2006/12142 ,  H01L31/035281 ,  H01L31/105 ,  Y02E10/50

    摘要： Various embodiments of the present invention are directed to nanowire-based photodetectors that can be used to convert information encoded in a channel of electromagnetic radiation into a photocurrent encoding the same information. In one embodiment of the present invention, a photodetector comprises a waveguide configured to transmit one or more channels of electromagnetic radiation. The photodetector includes a first terminal and a second terminal. The first terminal and the second terminal are positioned on opposite sides of the waveguide. The photodetector also includes a number of nanowires. Each nanowire interconnects the first terminal to the second terminal and a portion of each nanowire is embedded in the waveguide.

    摘要翻译： 本发明的各种实施例涉及可用于将在电磁辐射通道中编码的信息转换成编码相同信息的光电流的基于纳米线的光电检测器。 在本发明的一个实施例中，光电检测器包括被配置为传输一个或多个电磁辐射通道的波导。 光电检测器包括第一端子和第二端子。 第一端子和第二端子位于波导的相对侧上。 光电检测器还包括许多纳米线。 每个纳米线将第一端子与第二端子互连，并且每个纳米线的一部分嵌入在波导中。

    Method and apparatus for controlling light flux with sub-micron plasmon waveguides
    69.
    发明申请
    Method and apparatus for controlling light flux with sub-micron plasmon waveguides 有权
    用亚微米等离子体波导控制光通量的方法和装置

    公开(公告)号：US20080285917A1

    公开(公告)日：2008-11-20

    申请号：US11701014

    申请日：2007-05-15

    申请人： Alexandre M. Bratkovski ,  Shih-Yuan Wang

    发明人： Alexandre M. Bratkovski ,  Shih-Yuan Wang

    IPC分类号： G02B6/26

    CPC分类号： G02B6/107 ,  G02B6/262 ,  G02B6/3536

    摘要： Apparatuses and methods for modulating electromagnetic radiation are disclosed. A plasmon waveguide including an array of metallic nanoparticles disposed on a dielectric substrate is provided. The plasmon waveguide is disposed on a MEMS structure. An electromagnetic radiation signal is applied to a tapered fiber disposed proximate the MEMS structure. The intensity of the electromagnetic radiation signal passing through the tapered fiber is modified by displacing a deformable member of the MEMS structure to modify a distance between the plasmon waveguide and the tapered fiber such that an evanescent field of the tapered fiber causes a plasmon resonance in the plasmon waveguide.

    摘要翻译： 公开了用于调制电磁辐射的装置和方法。 提供了包括设置在电介质基板上的金属纳米颗粒阵列的等离子体波导。 等离子体波导设置在MEMS结构上。 将电磁辐射信号施加到靠近MEMS结构设置的锥形光纤。 通过移动MEMS结构的可变形构件来改变通过锥形光纤的电磁辐射信号的强度，以修改等离子体波导与锥形光纤之间的距离，使得锥形光纤的渐逝场引起等离子体共振 等离子体波导。