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    • 5. 发明公开
    • Atomic force sensor head for investigating the topography of a surface
    • TastkopffüratomareKräftezum Untersuchen der Topographie einerOberfläche。
    • EP0290648A1
    • 1988-11-17
    • EP87106900.1
    • 1987-05-12
    • International Business Machines Corporation
    • Dürig, Urs Theodor, Dr.Gimzewski, James Kazimierz, Dr.Rohrer, Heinrich, Dr.
    • G01L1/08G01L1/14
    • G01Q20/02G01D5/266G01Q60/38G01R33/0385G11B9/00G11B9/1418G11B11/007G11B11/10G11B17/32
    • The atomic force sensor head comprises a cantilever beam (50) forming an integral part of a body (53) from which it extends such that it has a free end to carry a member (55) for interaction with a surface to be investigated. As said member (55) is brought close to said surface, atomic forces will cause a deflection of said cantilever (50). This deflection is translated into a variation of an electrical value, such as a capacitance. A capacitor (57) is formed by a pair of electrodes (51, 52) coated onto the cantilever beam (50) and said body (53), respectively. The deflection of said cantilever beam (50) causes a variation of the distance (s) between said electrodes (51, 52) and, hence, of the capacitance.
      An improvement of the sensitivity and stability of this arrangement is made possible by filling the gap between the said electrodes (51, 52) with materials (54, 56) having different dielectric constants and different thicknesses. With a relation of 1:10 of the dielectric constants and a thickness relation of 1:5, an improvement factor of about 40 can be obtained. A 55
    • 原子力传感器头包括形成主体(53)的整体部分的悬臂梁(50),它从其延伸,使得其具有自由端以携带用于与要研究的表面相互作用的构件(55)。 当所述构件(55)靠近所述表面时,原子力将引起所述悬臂(50)的偏转。 该偏转被转换成诸如电容的电值的变化。 电容器(57)由分别涂覆在悬臂梁(50)和主体(53)上的一对电极(51,52)形成。 所述悬臂梁(50)的偏转导致所述电极(51,52)之间的距离(因此)与电容之间的距离的变化。 通过用具有不同介电常数和不同厚度的材料(54,56)填充所述电极(51,52)之间的间隙,可以提高该布置的灵敏度和稳定性。 介电常数为1:10,厚度关系为1:5,可获得约40的改进系数。
    • 7. 发明公开
    • Atomic force sensor head for measuring the properties of a data store
    • AtomarerKräftesensorzur Messung der Eigenschaften einesDatenträgers。
    • EP0442536A2
    • 1991-08-21
    • EP91105520.0
    • 1987-05-12
    • International Business Machines Corporation
    • Dürig, Urs Theodor, Dr.Rohrer, Heinrich, Dr.Binnig, Gerd Karl, Prof. Dr.
    • G01B11/30G01B7/34G11B11/08
    • G01Q20/02G01D5/266G01Q60/38G01R33/0385G11B9/00G11B9/1418G11B11/007G11B11/10G11B17/32
    • The atomic force sensor head comprises a cantilever beam (82) forming an integral part of a body (83, 84) from which it extends such that it has a free end to carry a member (81) for interaction with the surface (86) of a recording medium (80) to be investigated. As said member (81) is brought close to said surface (86), atomic forces will cause a deflection of said cantilever beam (82). This deflection is translated into a variation of an electrical value, such as a capacitance. A capacitor (87) is formed by a pair of electrodes (82, 85) coated onto the cantilever beam (82) and said body (84), respectively. The deflection of said cantilever beam (82) causes a variation of the distance (s) between said electrodes (82,85) and, hence, of the capacitance.
      An improvement of the sensitivity and stability of this arrangement is made possible by filling the gap between the said electrodes (82, 85) with materials having different dielectric constants and different thicknesses. With a relation of 1:10 of the dielectric constants and a thickness relation of 1:5, an improvement factor of about 40 can be obtained.
    • 原子力传感器头包括形成主体(83,84)的整体部分的悬臂梁(82),所述悬臂梁延伸,使得其具有自由端以携带用于与表面(86)相互作用的构件(81) 的记录介质(80)。 当所述构件(81)靠近所述表面(86)时,原子力将引起所述悬臂梁(82)的偏转。 该偏转被转换成诸如电容的电值的变化。 电容器(87)由分别涂覆在悬臂梁(82)和主体(84)上的一对电极(82,85)形成。 所述悬臂梁(82)的偏转导致所述电极(82,85)之间的距离(因此)和电容之间的距离的变化。 通过用具有不同介电常数和不同厚度的材料填充所述电极(82,85)之间的间隙,可以提高这种布置的灵敏度和稳定性。 介电常数为1:10,厚度关系为1:5,可获得约40的改进系数。