Álvaro San Paulo

TL;DR: In this article, the authors investigated the effect of tip sample separation, free amplitude, and sample properties on the performance of a force microscope with an amplitude modulation feedback, and showed that in the attractive regime, a net attractive force dominates the amplitude reduction while in the repulsive regime, amplitude reduction is dominated by a net repulsive force.

TL;DR: This review provides insight into the mechanical phenomena that occur in suspended mechanical structures when either biological adsorption or interactions take place on their surface: mass, surface stress, effective Young's modulus and viscoelasticity.

TL;DR: A new approach to mass sensing and stiffness spectroscopy is proposed based on the fact that the nanoresonator will enter a superposition state of two orthogonal vibrations with different frequencies when this symmetry is broken.

TL;DR: A force microscope operated with an amplitude modulation feedback (usually known as tapping-mode atomic force microscope) has two tip-sample interaction regimes, attractive and repulsive, and the performance of those regimes to imaging single antibody molecules is studied.

TL;DR: In this article, the average value of the interaction force and oscillation and the average power dissipated by the tip-surface interaction are the quantities that control the amplitude reduction, and the agreement obtained between analytical and numerical results supports the analytical method.