Scanning probe microscope using stored data for vertical probe positioning
AssigneeDigital Instruments, Inc.
InventorsVirgil B. Elings, John A. Gurley
Life of this patent
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Abstract
An apparatus and method for scanning a probe over a surface to either produce a measurement of the surface representative of a parameter other than the topography of the surface or to perform a task on the surface. The scanning operation is divided into two parts and with a first scan to obtain and store topographical information and with a second scan to measure the parameter of the surface other than topography or to perform the task while the probe height is controlled using the stored topographic information.
Claims46
In a scanning probe microscope including a probe positioned relative to a sample surface and having relative motion between the probe and the sample surface in the X and Y plane and controlled and sensed in the Z direction vertical to the surface to produce data responsive to the topography of the surface, a method for accurately measuring a parameter of the surface other than topography or performing a task related to topography including the following steps:
- providing a first scan by the probe of the sample surface in the X and Y plane and controlling and sensing in the Z direction vertical to the surface to produce data representative of the topography of the surface,
- storing the data representative of the topography of the surface,
- providing at least a second scan by the probe of the sample surface in response to the stored data to control the probe in the X, Y and Z directions in accordance with the stored data, and
- measuring a parameter of the surface other than topography or performing a task related to topography by the probe during the at least second scan.
A method for producing an interaction, other than a measurement of topography, between a probe and the surface of a sample, including the following steps,
- providing a first scan of the probe relative to the surface of the sample at a plurality of positions in the X and Y plane,
- controlling the probe during the first scan at the plurality of positions in a Z direction vertical to the surface to measure the topography of the surface and to produce data representative of the topography at the plurality of positions,
- storing the data representative of the topography of the surface at the plurality of positions,
- providing a second scan of the probe relative to the surface of the sample and controlling the Z direction of the probe at the plurality of positions in accordance with the stored data representative of the topography at the plurality of positions, and
- producing an interaction at the plurality of positions, other than the measurement of topography, between the probe and the surface of the sample during the second scan.
Interactive apparatus including a scanning probe microscope having a probe positioned relative to a sample surface and having relative motion between the probe and the sample surface in the X and Y plane and controlled and sensed in the Z direction vertical to the surface to produce data responsive to the topography of the surface, including:
- means for providing a first scan by the probe of the sample surface in the X and Y plane and controlling and sensing in the Z direction vertical to the surface to produce data representative of the topography of the surface,
- means for storing the data representative of the topography of the surface,
- means for providing at least a second scan by the probe of the sample surface in response to the stored data to control the probe in the X, Y and Z directions in accordance with the stored data, and
- means for measuring a parameter of the surface other than topography or performing a task related to topography by the probe during the at least second scan.
An apparatus for producing an interaction, other than a measurement of topography, between a probe and the surface of a sample, including:
- means for providing a first scan of the probe relative to the surface of the sample at a plurality of positions in the X and Y plane,
- means for controlling the probe during the first scan at the plurality of positions in a Z direction vertical to the surface to measure the topography of the surface and to produce data representative of the topography at the plurality of positions,
- means for storing the data representative of the topography of the surface at the plurality of positions,
- means for providing a second scan of the probe relative to the surface of the sample and controlling the Z direction of the probe at the plurality of positions in accordance with the stored data representative of the topography at the plurality of positions, and
- means for producing an interaction at the plurality of positions other than the measurement of topography, between the probe and the surface of the sample during the second scan.
Dependencies are inferred from the claim text.