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Ferroelectricity is observed in hexagonal boron nitride(hBN) through control of the registry of stacked layers, which we explore through both amplitude-modulated and sideband Kelvin probe force microscopy (KPFM) on the Park FX40 automatic AFM.

A schematic of the formation of parallel stacked bilayer hBN is shown in addition to a contact potential difference map measured using sideband KPFM.

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Dr. Stefan Kaemmer


President, Park Systems Inc.

With over 30 years immersed in the world of atomic force microscopy (AFM) and nanoscale science, Stefan is passionate about pushing the boundaries of how we image and manipulate materials at the smallest scales. Currently, he serves as President of Park Systems Inc., providing strategic input on the development of innovative AFM technologies that empower researchers worldwide. When Stefan is not diving into graphene edges or molecular twists, he enjoy exploring the fascinating underwater critters of Anilao and the mysterious caves of Mexico through scuba diving, as well as hitting the open road on his motorcycle.