Scanning probe microscope for measuring the electrical properties of the surface of an electrically conductive sample
First Claim
1. A scanning probe microscope for measuring electrical properties of a surface of an electrically conductive sample, comprising:
- a first sensor, which includes an electrically conductive first probe located near the surface of the sample, for detecting electrical information concerning electrical properties of the sample surface, including the state of electrons on the sample surface and the electrical potential of the sample surface, and then outputting a first electrical signal corresponding to the detected information;
a second sensor for detecting the distance between the first probe and the sample, and then outputting a second electrical signal corresponding thereto;
moving means for relatively moving the first probe and the sample in a three-dimensional manner;
a servo controller for adjusting the distance between the first probe and the sample to a desired value by servo control in accordance with the second electrical signal delivered from the second sensor while the electrical information concerning electrical properties of the sample surface is being detected by the first sensor; and
a processing unit for processing the first electrical signal delivered from the first sensor.
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Accused Products
Abstract
A scanning probe microscope for measuring the electrical properties of the surface of a sample comprises a first sensor for detecting electrical information for the sample surface and outputting a first electrical signal corresponding thereto, the first sensor including an electrically conductive probe located near the surface of the sample, a second sensor for detecting the distance between the probe and the sample and outputting a second electrical signal corresponding thereto, an actuator for relatively moving the probe and the sample in a three-dimensional manner, a servo control mechanism for adjusting the distance between the probe and the sample to a desired value by servo control in accordance with the second electrical signal while the electrical information is being detected by the first sensor, and a processing unit for processing the first electrical signal.
39 Citations
15 Claims
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1. A scanning probe microscope for measuring electrical properties of a surface of an electrically conductive sample, comprising:
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a first sensor, which includes an electrically conductive first probe located near the surface of the sample, for detecting electrical information concerning electrical properties of the sample surface, including the state of electrons on the sample surface and the electrical potential of the sample surface, and then outputting a first electrical signal corresponding to the detected information; a second sensor for detecting the distance between the first probe and the sample, and then outputting a second electrical signal corresponding thereto; moving means for relatively moving the first probe and the sample in a three-dimensional manner; a servo controller for adjusting the distance between the first probe and the sample to a desired value by servo control in accordance with the second electrical signal delivered from the second sensor while the electrical information concerning electrical properties of the sample surface is being detected by the first sensor; and a processing unit for processing the first electrical signal delivered from the first sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification