Presentation Information
[8p-P02-3]Surface potential measurement accuracy in vacuum by open-loop EPM with FM detection
〇Kosuke Hasegawa1, Hirofumi Yamada2, Yuji Miyato1 (1.Ryukoku Univ., 2.Ctr. of Sci. and Tech. Ryukoku Univ.)
Keywords:
AFM,OL-EPM,vacuum
By measuring the surface potential distributions of thermoelectric materials, we aim to elucidate the impact of nano-structures on thermoelectric properties and local temperature distributions. We have developed local potential measurement techniques in a vacuum using open-loop electric potential microscopy (OL-EPM), which enables the acquisition of potential distributions without the need for a DC bias. In this study, the measurement accuracy depended on the cantilever’s oscillation amplitude, with smaller amplitudes providing higher precision.