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Abstract: We present a method of measuring the charge density on dielectric surfaces.Similar to electrostatic force microscopy we record the electrostaticinteraction between the probe and the sample surface, but at large tip-sampledistances. For calibration we use a pyroelectric sample which allows us toalter the surface charge density by a known amount via a controlled temperaturechange. For proof of principle we determined the surface charge density underambient conditions of ferroelectric lithium niobate.



Autor: Florian Johann, Elisabeth Soergel

Fuente: https://arxiv.org/







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