A simple approximation for forces exerted on an AFM tip in liquid

Watkins, Matthew and Reischl, Bernhard (2013) A simple approximation for forces exerted on an AFM tip in liquid. Journal of Chemical Physics, 138 (15). ISSN 0021-9606

Full text not available from this repository.

Item Type:Article
Item Status:Live Archive


The critical quantity in understanding imaging using an atomic force microscope is the force the sample exerts on the tip. We put forward a simple one-to-one force to water density relationship, explain exactly how it occurs, and in which circumstances it holds. We argue that two wide classes of atomic force microscope (AFM) tip should lead to at least qualitative agreement with our model and represent a significant fraction of AFM tips as currently prepared. This connection between the short-range force and the unperturbed equilibrium water density removes the need to perform simulations for each tip location, conservatively speeding up simulations by around three orders of magnitude compared to current methods that explicitly calculate the force on a tip model at each point in space. © 2013 AIP Publishing LLC.

Keywords:AFM tip, Short-range forces, Three orders of magnitude, Water density, Atomic force microscopy, Nanoprobes, Computer simulation, silane derivative, silanol, water, article, atomic force microscopy, chemistry, equipment, molecular dynamics, surface property, thermodynamics, Microscopy, Atomic Force, Molecular Dynamics Simulation, Silanes, Surface Properties, Thermodynamics, Water
Subjects:F Physical Sciences > F320 Chemical Physics
Divisions:College of Science > School of Mathematics and Physics
Related URLs:
ID Code:17701
Deposited On:19 Jun 2015 10:54

Repository Staff Only: item control page