Related Experiment Video
Updated: Aug 17, 2026

Label-free Isolation and Enrichment of Cells Through Contactless Dielectrophoresis
Published on: September 3, 2013
Calculation of electrostatic and polarization energies from electron densities
1Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, USA.
Abstract:
We investigate procedures for calculating the electrostatic and polarization energies, Ees and Epol, associated with noncovalent interactions. The starting points are the electron densities of the isolated components and the complex; these could be obtained either computationally or experimentally. A slightly modified version of a scheme proposed by Gavezzotti is used to carry out numerical integrations over these electron densities. Our approach to estimating Epol is based upon partitioning the charge distributions of the components into overlapping and nonoverlapping regions. The effects of varying the integration parameters, computational techniques and basis sets are examined in detail for several noncovalently bound molecular dimers. Our results are in good agreement with the values of Ees and Epol produced by other methods, which require analytical integrations over interaction Hamiltonian matrix elements.
More Related Videos
Related Concept Videos
Electric Field of Two Equal and Opposite Charges
A separation of the positive and negative charges can lead to a weak, remnant effect of the positive and negative charges. The expectation is that the more the distance between the positive and...
Calculations of Electric Potential II
Consider a...
Dielectric Polarization in a Capacitor
Energy Associated With a Charge Distribution
Potential Due to a Polarized Object
Susceptibility, Permittivity and Dielectric Constant

