中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

17 records (took 0.019 seconds)

    3.
    发明专利
    未知

    公开(公告)号：DE69220951T2

    公开(公告)日：1998-01-15

    申请号：DE69220951

    申请日：1992-10-22

    Applicant: IBM

    Inventor： POHL WOLFGANG DIETER DR

    IPC: G02B6/26 ,  G02B6/28 ,  G02B6/35 ,  G02B26/02

    Abstract: The near-field photon tunneling devices consist of a plurality of optical waveguides, such as optical fibers (1, 2), arranged in juxtaposition with a variable tunnel gap (13) through which photons from at least one of said optical fibers (1, 2) can be caused to tunnel, and wherein the said tunnel gap (13) is filled with a metal (16) that is liquid at room temperature or at moderately elevated temperature. The width of the tunnel gap (13), -and with it the thickness of the liquid metal layer- is remotely controllable. The proposed control mechanisms include optical means, piezo-electric elements (8) and temperature- sensitive means. The devices proposed include optical couplers of the head-on and side-on types, optical modulators and switches, as well as display units.

    4.
    发明专利
    未知

    公开(公告)号：DE3771711D1

    公开(公告)日：1991-08-29

    申请号：DE3771711

    申请日：1987-05-12

    Applicant: IBM

    Inventor： POHL WOLFGANG DIETER DR

    IPC: G01B7/34 ,  G01B21/30 ,  G01L1/08 ,  G01L1/16 ,  G01N23/00 ,  G01N37/00 ,  G01Q10/06 ,  G01Q20/04 ,  G01Q60/32 ,  G01Q60/38 ,  H01J37/26

    Abstract: This atomic force microscope comprises a pointed tip (1) mounted on top of an oscillating crystal (2) which is translatable in xyz-directions by a conventional xyz-drive (4). A potential applied to a pair of electrodes (5, 6) coated on opposite faces of said crystal (2) causes the latter to oscillate with its resonance frequency. As the tip (1) is approached to a surface to be investigated, the frequency of oscillation of the crystal deviates from its original frequency. This deviation can be used in a feedback loop to control the distance in z-direction of the tip (1) from the surface being investigated and to plot an image of the contour of each scan performed by the tip (1) across the surface.

    6.
    发明专利
    未知

    公开(公告)号：DE69223789T2

    公开(公告)日：1998-06-25

    申请号：DE69223789

    申请日：1992-10-22

    Applicant: IBM

    Inventor： COURJON DANIEL DR ,  POHL WOLFGANG DIETER DR

    IPC: G01B11/30 ,  G01N37/00 ,  G01Q30/12 ,  G01Q60/18 ,  G01Q60/20 ,  G01Q60/22 ,  G02B21/00 ,  G11B7/12 ,  G02B6/28 ,  G11B11/00 ,  G11B9/00

    Abstract: This scanning near-field optical microscope is of the type where a light beam (19) with a diameter of at maximum lambda /20 is emitted, or received, by a sharply pointed probe tip (13) which is scanned across the surface of a sample (11) to be investigated. The light reflected by, and/or transmitted through, the sample (11) is detected by a detector (16) and/or further processed by a computer (24). The distance between the light-emitting probe tip (13) and the sample (11) under investigation is on the order of lambda /20 as well, so that the surface of the sample (11) is within the near-field of said probe tip (13). This optical microscope is characterized in that the gap between the probe tip (13) and the sample (11) is filled with a liquid (40) of high opacity, including any liquids with a large negative dielectric constant epsilon , so as to attenuate the intensity of the lightwaves emitted or received by the probe tip (13) to such an extent that the penetration depth z0 of the lightwaves inside the liquid, defined as the distance over which their intensity decreases to 1/e, is below 100 nm.

    9.
    发明专利
    未知

    公开(公告)号：AT161636T

    公开(公告)日：1998-01-15

    申请号：AT92810813

    申请日：1992-10-22

    Applicant: IBM

    Inventor： COURJON DANIEL DR ,  DUFFIEUX OPTICS LAB ,  POHL WOLFGANG DIETER DR

    IPC: G01B11/30 ,  G01N37/00 ,  G01Q30/12 ,  G01Q60/18 ,  G01Q60/20 ,  G01Q60/22 ,  G02B21/00 ,  G11B7/12 ,  G02B6/28 ,  G11B11/00 ,  G11B9/00

    Abstract: This scanning near-field optical microscope is of the type where a light beam (19) with a diameter of at maximum lambda /20 is emitted, or received, by a sharply pointed probe tip (13) which is scanned across the surface of a sample (11) to be investigated. The light reflected by, and/or transmitted through, the sample (11) is detected by a detector (16) and/or further processed by a computer (24). The distance between the light-emitting probe tip (13) and the sample (11) under investigation is on the order of lambda /20 as well, so that the surface of the sample (11) is within the near-field of said probe tip (13). This optical microscope is characterized in that the gap between the probe tip (13) and the sample (11) is filled with a liquid (40) of high opacity, including any liquids with a large negative dielectric constant epsilon , so as to attenuate the intensity of the lightwaves emitted or received by the probe tip (13) to such an extent that the penetration depth z0 of the lightwaves inside the liquid, defined as the distance over which their intensity decreases to 1/e, is below 100 nm.

Patent Agency Ranking