2014/07/11 by Sérgio F. Santos, Sergio Santos, Santos, Sergio +3
Engineering · Physics and Astronomy · #FOS: Physical sciences #Force Microscopy Techniques and Applications #Mechanical and Optical Resonators #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Molecular Junctions and Nanostructures #cond-mat.mes-hall
paper · pdf · doi:10.48550/arxiv.1407.3165
arxiv created 2014/07/11 · openalex publication_date 2014/07/11 · arxiv updated 2014/07/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
In multifrequency atomic force microscopy higher eigenmodes are externally excited to enhance resolution and contrast while simultaneously increasing the number of experimental observables with the use of gentle forces. Here, the implications of externally exciting multiple frequencies are discussed in terms of cantilever anharmonicity, fundamental period and the onset of subharmonic and superharmonic components. Cantilever anharmonicity is shown to affect and control both the observables, that is, the monitored amplitudes and phases, and the main expressions quantified via these observables, that is, the virial and energy transfer expressions which form the basis of the theory.