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    • 7. 发明申请
    • NEAR-FIELD APERTURE HAVING A FRACTAL ITERATE SHAPE
    • 具有分形ITERATE形状的近场孔
    • WO2006047337A2
    • 2006-05-04
    • PCT/US2005/038042
    • 2005-10-21
    • THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITYMATTEO, Joseph, A.LAMBERTUS, HesselinkYUEN, Yin
    • MATTEO, Joseph, A.LAMBERTUS, HesselinkYUEN, Yin
    • C12Q1/68
    • H01Q1/36Y10S977/862
    • Near-field electromagnetic devices having an opaque metallic screen with a fractal iterate aperture are provided. More specifically, the aperture is obtained by application of a self-similar replacement rule to an initial shape two or more times. Alternatively, the aperture can be obtained by application of a self-similar replacement rule one or more times to an initial C-shape. Such apertures tend to have multiple transmission resonances due to their multiple length scales. Fractal iterate apertures can provide enhanced transmission and improved spatial resolution simultaneously. Enormous improvement in transmission efficiency is possible. In one example, a checkerboard fractal iterate aperture provides 10 11 more intensity gain than a square aperture having the same spatial resolution. Efficient transmission for fractal iterate apertures having spatial resolution of λ/20 is also shown. The effect of screen thickness and composition can be included in detailed designs, but do not alter the basic advantages of improved transmission and spatial resolution provided by the invention.
    • 提供具有分形迭代孔径的不透明金属屏幕的近场电磁装置。 更具体地,通过将​​自相似的替换规则应用于初始形状两次或更多次来获得孔径。 或者,可以通过将自相似替换规则一次或多次应用于初始C形来获得孔径。 这样的孔由于其多个长度尺度而倾向于具有多个传输谐振。 分形迭代孔径可以同时提供增强的传输和改进的空间分辨率。 传输效率的巨大提高是可能的。 在一个示例中,棋盘分形迭代孔径具有比具有相同空间分辨率的方形孔径更多的强度增益10 11。 还示出了具有空间分辨率为π/ 20的分形迭代孔径的高效传输。 屏幕厚度和组成的效果可以包括在详细的设计中,但不改变本发明提供的改进的传输和空间分辨率的基本优点。
    • 8. 发明申请
    • 光導波装置
    • 光波导
    • WO2005121748A1
    • 2005-12-22
    • PCT/JP2005/010641
    • 2005-06-10
    • 国立大学法人岐阜大学田中 嘉津夫田中 雅宏
    • 田中 嘉津夫田中 雅宏
    • G01N13/14
    • G01Q60/22G02B6/262Y10S977/862
    • プラズモン活性媒質である銀(Ag)により構成された装置本体12に貫通形成された光導波路14に光が入射されると、当該光導波路14(微小開口16を含む)の画定面55で表面プラズモンが発生する。そのため、光導波路14内を伝搬する光の強度は、当該光が微小開口16に向けて伝搬するにつれて強くなる。また、第1凸片13aの先端51は、第2凸片13bの先端52と比較してより突出することから、凸部13の先端部において、前記光は当該先端部における電界の強度分布に基づき第1凸片13a近傍に集光される。そのため、微小開口16から滲み出された光が偏光方向に広がることは抑制される。よって、光導波路14を通じて伝搬される光の光強度を、その光の広がりの増大を招くことなく、良好なS/N比を維持しつつ、低コストで増強することができる。
    • 当光进入通过用作等离子体激元介质的由银(Ag)制成的器件本体(12)形成的光波导(14)时,在光波导(14)的限定表面(55)上产生表面等离子体 )(包括微开口(16))。 因此,通过光波导(14)传播的光的强度随着光向微孔(16)行进而增加。 第一突出片(13a)的端部(51)比第二突出片(13b)的端部(52)突出。 因此,根据突出部分(13)的端部周围的电场的强度分布,光聚焦在第一突出片(13a)周围。 因此,防止从微孔(16)渗出的光在光的偏振方向上扩散。 结果,可以以低成本增加通过光波导(14)传播的光的强度,而不会在保持良好的S / N比的同时增加光的扩展。
    • 9. 发明申请
    • HIGH RESOLUTION FIBER OPTIC PROBE FOR NEAR FIELD OPTICAL MICROSCOPY
    • 用于近场光学显微镜的高分辨率光纤探针
    • WO1997014067A1
    • 1997-04-17
    • PCT/US1996016080
    • 1996-10-11
    • ACCUPHOTONICS, INC.
    • ACCUPHOTONICS, INC.ISLAM, Mohammed, N.
    • G02B06/26
    • G02B6/241G01Q60/22Y10S385/901Y10S977/862
    • The near field optical microscopy probe (10) has a conically tapered tip (28) formed from the inner core (24) of a fiber optic cable (12). The tapered tip (28) protrudes longitudinally from the outer cladding (26) and has a metallized optically opaque coating (32) over all the tip except for the light-emitting aperture (30) at the tip apex. The optical probe is manufactured by wet chemical etching. The protruding conical tip (28) tapers at an acute angle on the order of about 15 (deg.) to 60 (deg.), such that the tip length is on the order of a few wavelengths. By this construction, illumination traverses only a very small nonpropagating mode or evanescent mode region with resulting high optical efficiency. The probe and specimen may be supercooled, causing the metallized coating to be highly conductive and therefore optically opaque. The result is a high efficiency, high resolution probe (10) suitable for such demanding applications as DNA sequencing.
    • 近场光学显微镜探针(10)具有由光纤电缆(12)的内芯(24)形成的锥形锥形尖端(28)。 锥形尖端(28)从外包层(26)纵向突出,并且除了尖端顶点处的发光孔(30)之外,在所有尖端上都具有金属化光学不透明涂层(32)。 光学探针通过湿化学蚀刻制造。 突出的锥形尖端(28)以约15(度)至60度(deg)的数量级的锐角逐渐变细,使得尖端长度在几个波长的量级上。 通过这种结构,照明仅穿过非常小的非传播模式或渐逝模式区域,从而产生高的光学效率。 探针和样品可能是过冷的,导致金属化涂层是高度导电的,因此光学不透明。 结果是高效率,高分辨率的探针(10),适用于诸如DNA测序这样苛刻的应用。
    • 10. 发明申请
    • NEAR-FIELD RESISTIVITY MICROSCOPE
    • 近场电阻显微镜
    • WO1997010514A1
    • 1997-03-20
    • PCT/IL1996000106
    • 1996-09-10
    • YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREW UNIVERSITY OF JERUSALEMDAVIDOV, DanGOLOSOVSKY, Michael
    • YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREW UNIVERSITY OF JERUSALEM
    • G01R27/26
    • G01R27/02G01R1/06772Y10S977/862Y10S977/875Y10S977/89Y10S977/901
    • A microwave microscope comprising a microwave waveguide having a probe end positioned closely above the surface to probed such that the surface is in the near field of the microwave radiation. The end of the probe facing the surface is covered with a metallic foil or a conducting film deposited over a dielectric layer and having a rectangular slit formed therein. The long dimension of the slit is nearly resonant with the microwave, that is, just slightly longer than one-half of the microwave wavelength. The short dimension is substantially shorter than long dimension and is chosen such that the slitted end is transparent to the microwave. Thereby, substantial microwave power is emitted through the slit with fine resolution that is determined by the short dimension of the slit. The probe is scanned across the surface in the direction of the short slit dimension, and its resolution is approximately equal to the short slit dimension. Preferably, the end is convexly curved along the direction of the long slit dimension so that only a portion of the slit is in the near field, thereby reducing the effective lateral dimension.
    • 一种微波显微镜,包括微波波导,其具有位于表面附近的探针端,以被探测,使得表面处于微波辐射的近场中。 面向表面的探针的端部被沉积在电介质层上并且在其中形成有矩形狭缝的金属箔或导电膜覆盖。 狭缝的长尺寸几乎与微波共振,即略微长于微波波长的一半。 短尺寸基本上比长尺寸短,并且被选择成使得狭缝端对微波是透明的。 因此,通过狭缝的短尺寸确定的细分辨率通过狭缝发射大量的微波功率。 探针沿着短狭缝尺寸的方向扫描表面,其分辨率近似等于短狭缝尺寸。 优选地,端部沿着长狭缝尺寸的方向凸起地弯曲,使得仅狭缝的一部分处于近场,从而降低了有效的横向尺寸。