The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 2001
Filed:
Aug. 10, 1998
Seiko Instruments Inc., , JP;
Abstract
A scanning probe microscope comprises a cantilever having a probe at an end portion thereof. A scanning signal generating device generates a main scanning signal and a sub-scanning signal. A main scanning device scans the probe along a main scanning direction over a sample surface in accordance with the main scanning signal. A sub-scanning device scans the probe along a sub-scanning direction over the sample surface in accordance with the sub-scanning signal. A Z-direction fine moving device moves the probe in a fine movement in the Z direction with respect to the sample surface maintains the probe at a predetermined distance from the sample surface. At least two of the main scanning device, the sub-scanning device, and the Z-direction fine moving device comprise voice coil motors. Each of the voice coil motors has a stator having a groove and a movable member extending into the groove for undergoing movement therein. A viscous fluid is disposed in the groove of the stator of each voice coil motor for attenuating Q of a resonant vibration thereof.