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  • Oral presentation
  • Open Access

Simulating “soft” electronics

Journal of Cheminformatics20146 (Suppl 1) :O19

  • Published:


  • Force Field
  • Local Property
  • Mechanical Calculation
  • Quantum Mechanical Calculation
  • Mechanical Description

Simulating electronic devices built from flexible organic molecules requires both adequate conformational sampling and a reliable quantum mechanical description of the electronics of the system.

The former is best achieved using classical (force field) molecular-dynamics simulations, from which individual geometries (“snapshots”) can be used for subsequent quantum mechanical calculations.

As the repeating unit in the classical simulations typically involves thousands of atoms, the quantum mechanical techniques must also be able to handle many thousands of atoms quickly and effectively on modern parallel hardware.

The newly developed EMPIRE program has been used in such a scheme to perform simulations on self-assembled-monolayer field-effect transistors (SAMFETs). Calculations of the size needed require novel interpretation and post-processing techniques based on local properties calculated on grids, rather than the more traditional population analyses.

The results of simulations using the techniques described above will be presented and the algorithms and parallelization strategies implemented to be able to calculate as many as 100,000 atoms on 1,024 cores.

Authors’ Affiliations

Computer-Chemie-Centrum, Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nägelsbachstraße 25, 91052 Erlangen, Germany


© Clark; licensee Chemistry Central Ltd. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver ( applies to the data made available in this article, unless otherwise stated.