Quantitative measurement of the surface charge density

Details Quantitative measurement of the surface charge density Quantitative measurement of the surface charge density

2010-09-09

arxiv.org/abs/1009.1902v1

Appl. Phys. Lett. 95, 232906 (2009)

Physics

Condensed Matter

Materials Science

Scientific paper

We present a method of measuring the charge density on dielectric surfaces. Similar to electrostatic force microscopy we record the electrostatic interaction between the probe and the sample surface, but at large tip-sample distances. For calibration we use a pyroelectric sample which allows us to alter the surface charge density by a known amount via a controlled temperature change. For proof of principle we determined the surface charge density under ambient conditions of ferroelectric lithium niobate.

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