Virtual resonance and frequency difference generation by van der waals interaction

L. Tetard, A. Passian, S. Eslami, N. Jalili, R. H. Farahi, T. Thundat

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

The ability to explore the interior of materials for the presence of inhomogeneities was recently demonstrated by mode synthesizing atomic force microscopy. Proposing a semiempirical nonlinear force, we show that difference frequency ω- generation, regarded as the simplest synthesized mode, occurs optimally when the force is tuned to van der Waals form. From a parametric study of the probe-sample excitation, we show that the predicted ω- oscillation agrees well with experiments. We then introduce the concept of virtual resonance to show that probe oscillations at ω- can efficiently be enhanced.

Original languageEnglish
Article number180801
JournalPhysical Review Letters
Volume106
Issue number18
DOIs
StatePublished - May 6 2011

Fingerprint

Dive into the research topics of 'Virtual resonance and frequency difference generation by van der waals interaction'. Together they form a unique fingerprint.

Cite this