Invited Article: VEDA: A web-based virtual environment for dynamic atomic force microscopy

John Melcher, Purdue University
Shuiqing Hu, Purdue University - Main Campus
Arvind Raman, Birck Nanotechnology Center, Purdue University

Date of this Version

June 2008

Citation

REVIEW OF SCIENTIFIC INSTRUMENTS 79, 061301

This document has been peer-reviewed.

 

Abstract

We describe here the theory and applications of virtual environment dynamic atomic force microscopy (VEDA), a suite of state-of-the-art simulation tools deployed on nanoHUB (www.nanohub.org) for the accurate simulation of tip motion in dynamic atomic force microscopy (dAFM) over organic and inorganic samples. VEDA takes advantage of nanoHUB's cyberinfrastructure to run high-fidelity dAFM tip dynamics computations on local clusters and the teragrid. Consequently, these tools are freely accessible and the dAFM simulations are run using standard web-based browsers without requiring additional software. A wide range of issues in dAFM ranging from optimal probe choice, probe stability, and tip-sample interaction forces, power dissipation, to material property extraction and scanning dynamics over hetereogeneous samples can be addressed.

 

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