Methods, systems, and computer readable media for dual resonance frequency enhanced electrostatic force microscopy

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United States of America Patent

PATENT NO 9395388
SERIAL NO

14428510

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Abstract

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The subject matter described herein includes methods, systems, and computer readable media for dual resonance frequency enhanced electrostatic force microscopy. One method includes applying an alternating current (AC) bias and a direct current (DC) bias to an atomic force microscopy cantilever, wherein the AC bias has a frequency greater than a fundamental resonance frequency of the cantilever. The method further includes mechanically vibrating the cantilever at a frequency different from the frequency of the AC bias. The method further includes physically and electrostatically scanning a sample in the same pass using the cantilever while vibrating the cantilever and applying the AC and DC biases to the cantilever, and generating a topology image of the sample from the physical scanning and an electrostatic image of charged material under or on a surface of the sample from the electrostatic scanning.

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Patent Owner(s)

Patent OwnerAddress
THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL100 EUROPA DRIVE SUITE 430 CHAPEL HILL NC 27517

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Erie, Dorothy Chapel Hill, US 2 3
Wu, Dong San Leandro, US 65 843

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