Search for "Kelvin force probe microscopy" in Full Text gives 2 result(s) in Beilstein Journal of Nanotechnology.
Beilstein J. Nanotechnol. 2019, 10, 1056–1064, doi:10.3762/bjnano.10.106
Beilstein J. Nanotechnol. 2012, 3, 221–229, doi:10.3762/bjnano.3.25