Application of KPFM

Image of boron nitride (BN) layers on a copper foil. Strong contrast is observed in the surface potenitial (dark triangles, right) but not in topography (right). This is due to the undulating copper foil surface that makes it difficult to image the topography of the thin BN layers. Data acqired using an Asylum Research Cypher-S AFM in KPFM mode using an AD-2.8-AS Adama Innovations probe.