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    • 6. 发明申请
    • APPARATUS FOR COLLECTION OF CATHODOLUMINESCENCE SIGNALS
    • 用于收集阴离子荧光信号的装置
    • WO2013101379A1
    • 2013-07-04
    • PCT/US2012/066770
    • 2012-11-28
    • GATAN, INC.
    • GALLOWAY, SimonSTOWE, David, J.VINCE, RichardBEECHING, LeviBLACKWELL, John
    • H01J37/22H01J37/26
    • H01J37/228H01J37/26H01J2237/20H01J2237/2445H01J2237/24495H01J2237/2808
    • A side entry TEM holder incorporates a miniature tilted off axis ellip- tical mirror (110) to collect cathodoluminescence from the specimen (130) and couple it efficiently into a tilted fiber optic (120) integrated into the holder. The design is compatible with the cryogenic operation of the holder. TEM specimens are partially transparent to the electron beam, and so light can be emitted above and below the specimen. The same principle of off-axis mirror and tilted fiber can be utilized to collect light from above and below the specimen yet fit into the very confined space required by insertion through the goniometer and for operation between narrow gap pole pieces. With a dual system, the emission of light from above the specimen can be compared to that from below thereby enhancing the versatility of the analytical tech- nique.
    • 侧入TEM持有器包括微型倾斜离轴椭圆镜(110)以从样品(130)收集阴极发光并将其有效地耦合到集成到保持器中的倾斜光纤(120)中。 该设计与支架的低温操作兼容。 TEM样品对电子束部分透明,因此可以在样品上方和下方发射光。 离轴反射镜和倾斜光纤的相同原理可以用于从样品上方和下方收集光线,但是它们被安装到通过测角器插入所需的非常狭窄的空间中,并在狭窄的间隙极片之间进行操作。 使用双重系统,可以将来自样品上方的光的发射与下面的光进行比较,从而提高分析技术的通用性。
    • 7. 发明申请
    • AUTOMATED ADJUSTMENT OF AN ENERGY FILTERING TRANSMISSIION ELECTRON MICROSCOPE
    • 能量过滤电子显微镜的自动调整
    • WO1998006125A1
    • 1998-02-12
    • PCT/US1997011896
    • 1997-07-10
    • GATAN, INC.
    • GATAN, INC.KUNDMANN, Michael, KarlGUBBENS, Alexander, JozefFRIEDMAN, Stuart, LawrenceKRIVANEK, Ondrej, L.
    • H01J37/26
    • H01J37/05H01J37/252H01J37/26H01J37/265H01J2237/24485H01J2237/24585H01J2237/2826
    • An energy filtering system of an EFTEM is automatically adjusted using a computer. The computer inserts an energy-selecting slit into the beam path and begins monitoring the position of the electron beam through a combination of the current sensors integral to the slit and the readout of an electron camera. The beam is centered within the slit by adjusting an energy dispersing element while monitoring beam sensors. After initial alignment, the slit is retracted and a reference aperture is inserted at the entrance to the energy filter. The electron camera captures an image of the reference aperture and the computer analyzes the deviations of the aperture image from its known physical dimensions in order to evaluate the electron optical distortions and aberrations of the filter. The computer uses the determined optical parameters to adjust the distortion and aberration correcting optical elements of the filter, whose effects are known due to previous calibration. After correcting the imaging aberrations, the reference aperture is withdrawn, the slit reinserted, and an isochromatic surface of the filter at the plane of the slit is measured by scanning the beam across a slit edge while integrating the transmitted beam intensity on the electron camera. The isochromatic surface thus collected by the electron camera is analyzed by the computer to extract additional aberration coefficients of the filter system. These measured aberration coefficients are used to make calibrated corrections to the filter optics.
    • 使用计算机自动调整EFTEM的能量过滤系统。 计算机将能量选择狭缝插入光束路径中,并开始通过整合到狭缝的电流传感器和电子照相机的读出的组合监视电子束的位置。 通过在监测光束传感器的同时调节能量分散元件,光束在狭缝内居中。 在初始对准之后,狭缝缩回并且在能量过滤器的入口处插入参考孔。 电子摄像机拍摄参考光圈的图像,并且计算机分析孔径图像与其已知物理尺寸的偏差,以便评估滤光器的电子光学失真和像差。 计算机使用确定的光学参数来调整滤波器的失真和像差校正光学元件,其由于先前的校准而已知其影响。 在校正成像像差之后,取出参考孔径,重新插入缝隙,并且通过扫描横跨狭缝边缘的光束来测量滤光器在狭缝平面处的等色表面,同时将透射光束强度整合在电子照相机上。 由电子照相机收集的等色表面由计算机分析以提取滤光系统的附加像差系数。 这些测量的像差系数用于对滤光器光学元件进行校准校正。
    • 9. 发明申请
    • COOLED MANIPULATOR TIP FOR REMOVAL OF FROZEN MATERIAL
    • 用于冷冻冷冻的操作人员拔除冷冻材料
    • WO2012155044A1
    • 2012-11-15
    • PCT/US2012/037510
    • 2012-05-11
    • GATAN, INC.SEARLE, Andrew NicholasGALLOWAY, Simon Andrew
    • SEARLE, Andrew NicholasGALLOWAY, Simon Andrew
    • G01N1/42G02B21/32H01J37/20
    • G01N1/42G02B21/32H01J37/20H01J2237/208H01J2237/31749
    • The disclosed apparatus enables attachment to a sample to be excised from a frozen bulk sample, the transfer of the excised sample from the bulk sample to a separate cooled support structure by means of a manipulator tip that can be cooled and maintained at a temperature below that of vitreous ice and which provides both an active cooling path and cryogenic shielding to maintain the temperature of the excised sample below that of vitreous ice. The cryogenic shielding also helps minimize contamination of the cooled sample by condensation of volatile material. A method is disclosed for extracting a portion of a frozen sample, comprising attaching a thermally-isolated cooled manipulator tip to the sample with vapor deposition and removing a portion of the sample affixed to the tip without changing phase of the portion of the sample being removed, with a focused ion beam.
    • 所公开的装置使得能够将附着到从冷冻大块样品中切除的样品,通过可以冷却并保持在低于该温度的温度的机械手尖端将切出的样品从大量样品转移到单独的冷却的支撑结构 的玻璃冰,并且其提供主动冷却路径和低温屏蔽,以将切除的样品的温度维持在玻璃冰的温度以下。 低温屏蔽还有助于通过挥发性物质的冷凝来最小化冷却样品的污染。 公开了一种用于提取冷冻样品的一部分的方法,包括通过气相沉积将热隔离的冷却的操纵器尖端附着到样品上,并且去除固定在尖端的一部分样品,而不改变被去除的样品部分的相位 ,聚焦离子束。