학술논문
Quantification of van der Waals forces in bimodal and trimodal AFM.
Document Type
Academic Journal
Author
Santos S; UiT-the Arctic University of Norway, Department of Physics and Technology, 9037 Tromsø, Norway.; Gadelrab K; Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.; Elsherbiny L; Laboratory for Energy and NanoScience (LENS), Khalifa University of Science and Technology, Masdar Institute Campus, 127788 Abu Dhabi, United Arab Emirates.; Drexler X; UiT-the Arctic University of Norway, Department of Physics and Technology, 9037 Tromsø, Norway.; Olukan T; UiT-the Arctic University of Norway, Department of Physics and Technology, 9037 Tromsø, Norway.; Font J; Departament d'Enginyeria Minera, Industrial i TIC, UPC BarcelonaTech, 08242 Manresa, Spain.; Barcons V; Departament d'Enginyeria Minera, Industrial i TIC, UPC BarcelonaTech, 08242 Manresa, Spain.; Chiesa M; UiT-the Arctic University of Norway, Department of Physics and Technology, 9037 Tromsø, Norway.; Laboratory for Energy and NanoScience (LENS), Khalifa University of Science and Technology, Masdar Institute Campus, 127788 Abu Dhabi, United Arab Emirates.
Source
Publisher: American Institute of Physics Country of Publication: United States NLM ID: 0375360 Publication Model: Print Cited Medium: Internet ISSN: 1089-7690 (Electronic) Linking ISSN: 00219606 NLM ISO Abbreviation: J Chem Phys Subsets: PubMed not MEDLINE; MEDLINE
Subject
Language
English
Abstract
The multifrequency formalism is generalized and exploited to quantify attractive forces, i.e., van der Waals interactions, with small amplitudes or gentle forces in bimodal and trimodal atomic force microscopy (AFM). The multifrequency force spectroscopy formalism with higher modes, including trimodal AFM, can outperform bimodal AFM for material property quantification. Bimodal AFM with the second mode is valid when the drive amplitude of the first mode is approximately an order of magnitude larger than that of the second mode. The error increases in the second mode but decreases in the third mode with a decreasing drive amplitude ratio. Externally driving with higher modes provides a means to extract information from higher force derivatives while enhancing the range of parameter space where the multifrequency formalism holds. Thus, the present approach is compatible with robustly quantifying weak long range forces while extending the number of channels available for high resolution.
(© 2023 Author(s). Published under an exclusive license by AIP Publishing.)
(© 2023 Author(s). Published under an exclusive license by AIP Publishing.)