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    • 16. 发明公开
    • Measurement and endpointing of sample thickness
    • Messung der Probendicke und Endpunkbestimmung
    • EP2367195A2
    • 2011-09-21
    • EP11165381.2
    • 2009-11-02
    • FEI Company
    • Young, RichardPeterson, BrennanMoriarty, MichaelSchampers, Ruud
    • H01J37/304H01J37/305G01N1/28
    • H01J37/3056G01N1/286H01J37/304H01J2237/24455H01J2237/30466H01J2237/31745H01J2237/31749
    • An improved method for TEM sample creation. The use of a SEM-STEM detector in the dual-beam FIB/SEM allows a sample to be thinned using the FIB, while the STEM signal is used to monitor sample thickness. A preferred embodiment of the present invention can measure the thickness of or create S/TEM samples by using a precise endpoint detection method that is reproducible and suitable for automation. Preferred embodiments also enable automatic endpointing during TEM lamella creation and provide users with direct feedback on sample thickness during manual thinning. Preferred embodiments of the present invention thus provide improved methods for endpointing sample thinning and methods to partially or fully automate endpointing to increase throughput and reproducibility of TEM sample creation.
    • 一种改进的TEM样品创建方法。 在双光束FIB / SEM中使用SEM-STEM检测器允许使用FIB对样品进行稀释,而STEM信号用于监测样品厚度。 本发明的一个优选实施例可以通过使用可重复且适合自动化的精确终点检测方法来测量S / TEM样品的厚度或产生S / TEM样品。 优选实施例还可以在TEM薄片创建期间实现自动终点,并且在手动稀疏期间向用户提供关于样品厚度的直接反馈。 因此,本发明的优选实施例提供了用于终止样品稀释的改进方法以及部分或全部自动化终点以提高TEM样品产生的生产量和再现性的方法。
    • 19. 发明公开
    • Method of studying a cryogenic sample in an optical microscope
    • Verfahren zum Untersuchen einer Kryoprobe在einem optisches Mikroskop
    • EP2775338A1
    • 2014-09-10
    • EP13157564.9
    • 2013-03-04
    • FEI COMPANY
    • Daum, RainerMayer, TobiasGeisbauer, MatthiasSchampers, RuudPersoon, Johannes
    • G02B27/00G02B21/28
    • C12Q1/02G02B21/28G02B27/0006
    • A method of studying a sample using an optical microscope, comprising the following steps:
      - Providing the sample in a sample holder comprising means to maintain the sample at a temperature T below 273 K;
      - Providing a microscope objective lens having an extremal lens element proximal the sample holder;
      - Bringing the lens into a focus position proximal the sample, the extremal lens element and sample being separated by an intervening space,

      which method comprises the following steps:
      - Providing the objective lens in a thermally insulating jacket;
      - Providing a transparent window in said intervening space, with a gap between the window and the extremal lens element;
      - Providing a flow of substantially dry gas in said gap;
      - Tailoring the geometry and velocity of said flow so that, at least in said gap, the flow:
      - Is non-laminar;
      - Does not excite substantial acoustic vibration in a structure proximal the gap.


      Said structure may, for example, be at least one of:
      - The window;
      - The sample;
      - The sample holder.
    • 一种使用光学显微镜研究样品的方法,包括以下步骤: - 将样品提供在样品架中,其包括将样品保持在低于273K的温度的装置; - 提供具有靠近样品架的极端透镜元件​​的显微镜物镜; - 将透镜置于样品近端的聚焦位置,极光透镜元件和样品被中间间隔开,该方法包括以下步骤: - 将物镜提供在隔热套中; - 在所述中间空间中提供透明窗口,窗口和极端透镜元件​​之间具有间隙; - 在所述间隙中提供基本干燥的气体流; - 裁剪所述流的几何形状和速度,使得至少在所述间隙中流动: - 非层流; - 不会在靠近间隙的结构中激发大量的声振动。 所述结构可以例如是以下至少之一: - 窗口; - 例子; - 样品架。
    • 20. 发明公开
    • Forming an electron microscope sample from high-pressure frozen material
    • Bilden einer Elektronenmikroskopprobe aus hochdruckgefrorenem材料
    • EP2685234A1
    • 2014-01-15
    • EP13176233.8
    • 2013-07-12
    • FEI COMPANY
    • Schampers, RuudHayles, MichaelDe Winter, MatthijsSchneijdenberg, Chris
    • G01N1/42G01N1/28
    • B23K15/08G01N1/06G01N1/42G01N2001/2873
    • Method of forming a sample from a capillary with high-pressure frozen sample material, the method comprising: a step (102) of providing a high-pressure capillary with vitrified sample material at a temperature T 1 below the glass transition temperature Tg, and a step (104) of cutting the capillary, characterized by a step (106) of warming the capillary to a temperature T 2 between temperature T 1 and temperature Tg, a subsequent step (108) of cooling the capillary to a temperature T 3 below temperature T 2 , as a result of which material is extruded from the capillary, and a step (112) of freeing a sample from the extruded sample material at a temperature below temperature T g . Vitrified biological material could be extruded from a capillary at liquid at a temperature of T = 88 K (liquid nitrogen by raising the temperature to, for example 130 K and then cooling the capillary to 88 K. Not only did this result to extrusion material, but even more surprising is that a repeated temperature cycle often results in further extrusion of sample material. From the thus extruded material a sample can be sliced by, for example, ion beam milling.
    • 用高压冷冻样品材料从毛细管形成样品的方法,所述方法包括:在低于玻璃化转变温度Tg的温度T 1下向玻璃化样品材料提供高压毛细管的步骤(102),和 步骤(104),其特征在于将毛细管温度升至温度T 1和温度Tg之间的温度T 2的步骤(106),将毛细管冷却至低于温度T 3的温度T 3的后续步骤(108) T 2,其结果是从毛细管中挤出材料,以及在低于T g的温度下将样品从挤出的样品材料中释放的步骤(112)。 玻璃化的生物材料可以在T = 88K的温度下从液体中的毛细管挤出(液氮通过将温度升高至例如130K,然后将毛细管冷却至88K。不仅对挤出材料产生这种结果, 但更令人惊奇的是,重复的温度循环通常导致样品材料的进一步挤出。从这样挤出的材料可以通过例如离子束研磨来切割样品。