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Nanometer Thermal Conductivity Mapping Using Laser-based Scanning Thermal Microscopy

Published online by Cambridge University Press:  24 March 2015

Jeremy Goeckeritz ,
Gary Aden  and
Ami Chand
Jeremy Goeckeritz
Affiliation:
Applied Nanostructures, 415 Clyde Ave. Suite 102, Mountain View, CA 94043, U.S.A.
Gary Aden
Affiliation:
Applied Nanostructures, 415 Clyde Ave. Suite 102, Mountain View, CA 94043, U.S.A.
Ami Chand
Affiliation:
Applied Nanostructures, 415 Clyde Ave. Suite 102, Mountain View, CA 94043, U.S.A.
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Abstract

A new measurement technique using a cantilever probe with an integrated thermal sensor is investigated for measuring thermal conductivity at the nanometer scale. The probe is used in a configuration wherein the laser from an atomic force microscope (AFM) heats the tip of the probe above ambient temperature. Heat is transferred from the probe to a sample based on the thermal conductivity of the sample. The heat flow creates a temperature change, as small as 0.01 °C, which is detected by the thermal sensor. The measurement technique presented offers a simple and effective method for mapping the thermal conductivity of a number of materials. We explore the ability of the technique to map silicon oxide on silicon, carbon fibers and gold nanoparticles. Analysis shows that the technique can be used to produce images with a thermal resolution surpassing 25 nm.

Keywords

nanoscalethermal conductivityscanning probe microscopy (SPM)
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1754: Symposium OO/PP/QQ/TT – State-of-the-Art Developments in Materials Characterization , 2015 , pp. 81 - 86
Copyright
Copyright © Materials Research Society 2015 

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References

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