Distance dependence of force and dissipation in non-contact atomic force microscopy on Cu(100) and Al(111)
| Autor: | Alexis Baratoff, Roland Bennewitz, Laurent Nony, Ernst Meyer, Oliver Pfeiffer |
|---|---|
| Přispěvatelé: | Institute of Physics (NCCR), University of Basel (Unibas), Laboratoire matériaux et microélectronique de Provence (L2MP), Université Paul Cézanne - Aix-Marseille 3-Université de Provence - Aix-Marseille 1-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Institute of Physics [Basel] |
| Rok vydání: | 2004 |
| Předmět: |
Yield (engineering)
Materials science Phase (waves) FOS: Physical sciences metals Bioengineering 02 engineering and technology 01 natural sciences Viscoelasticity Quality (physics) 0103 physical sciences Visco elastic deformations General Materials Science Physics - Atomic and Molecular Clusters Electrical and Electronic Engineering 010306 general physics Condensed matter physics Mechanical Engineering [PHYS.PHYS.PHYS-ATM-PH]Physics [physics]/Physics [physics]/Atomic and Molecular Clusters [physics.atm-clus] analytical models dissipation General Chemistry Dissipation Non-contact AFM 021001 nanoscience & nanotechnology Amplitude Mechanics of Materials Atomic and Molecular Clusters (physics.atm-clus) 0210 nano-technology Non-contact atomic force microscopy Excitation |
| Zdroj: | Nanotechnology Nanotechnology, Institute of Physics, 2004, 15, pp.S101-S107. ⟨10.1088/0957-4484/15/2/021⟩ Nanotechnology, 2004, 15, pp.S101-S107. ⟨10.1088/0957-4484/15/2/021⟩ |
| ISSN: | 1361-6528 0957-4484 |
| DOI: | 10.1088/0957-4484/15/2/021 |
| Popis: | The dynamic characteristics of a tip oscillating in the nc-AFM mode in close vicinity to a Cu(100)-surface are investigated by means of phase variation experiments in the constant amplitude mode. The change of the quality factor upon approaching the surface deduced from both frequency shift and excitation versus phase curves yield to consistent values. The optimum phase is found to be independent of distance. The dependence of the quality factor on distance is related to 'true' damping, because artefacts related to phase misadjustment can be excluded. The experimental results, as well as on-resonance measurements at different bias voltages on an Al(111) surface, are compared to Joule dissipation and to a model of dissipation in which long-range forces lead to viscoelastic deformations. |
| Databáze: | OpenAIRE |
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