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US 8,914,911 B2Granted
Magnetic actuation and thermal cantilevers for temperature and frequency dependent atomic force microscopy
AssigneesThe Board of Trustees of the University of Illinois, Anasys Instruments
InventorsWilliam P. King, Craig Prater, Byeonghee Lee, Doug Gotthard
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Abstract
Described are methods for magnetically actuating microcantilevers and magnetically actuated and self-heated microcantilevers. Also described are methods for determining viscoelastic properties and thermal transition temperatures of materials.
Claims26
A device for characterizing a region of a sample with sub-micron spatial resolution, the device comprising:
- a self-heating cantilever probe having a tip;
- a magnetic source placed in proximity to the cantilever probe;
- and
- a current source in communication with the self-heating cantilever.
1 more element
A method of determining a material property of a sub-micron region of a sample, the method comprising the steps of:
- interacting a probe tip of a self-heating cantilever probe with a surface of the sample;
- applying a force between the probe tip and the surface of the sample, wherein the force is generated by an interaction between a current through the self-heating cantilever probe and a magnetic field;
- measuring a response of the self-heating cantilever probe to the applied force;
- and
- determining the property of a sub-micron region of the sample from the measured response.
2 more elements
Dependencies are inferred from the claim text.