Scanning speed phenomenon in contact-resonance atomic force microscopy

Autor: Ryan C. Tung, Jason P. Killgore, Christopher C. Glover
Rok vydání: 2018
Předmět:
Zdroj: Beilstein Journal of Nanotechnology, Vol 9, Iss 1, Pp 945-952 (2018)
Beilstein Journal of Nanotechnology
ISSN: 2190-4286
DOI: 10.3762/bjnano.9.87
Popis: This work presents data confirming the existence of a scan speed related phenomenon in contact-mode atomic force microscopy (AFM). Specifically, contact-resonance spectroscopy is used to interrogate this phenomenon. Above a critical scan speed, a monotonic decrease in the recorded contact-resonance frequency is observed with increasing scan speed. Proper characterization and understanding of this phenomenon is necessary to conduct accurate quantitative imaging using contact-resonance AFM, and other contact-mode AFM techniques, at higher scan speeds. A squeeze film hydrodynamic theory is proposed to explain this phenomenon, and model predictions are compared against the experimental data.
Databáze: OpenAIRE