Efficient Computation of Power, Force, and Torque in BEM Scattering Calculations

Author(s)
Reid, McMahon Thomas Homer; Johnson, Steven G
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Abstract
We present concise, computationally efficient formulas for several quantities of interest-including absorbed and scattered power, optical force (radiation pressure), and torque-in scattering calculations performed using the boundary-element method (BEM) [also known as the method of moments (MoM)]. Our formulas compute the quantities of interest directly from the BEM surface currents with no need ever to compute the scattered electromagnetic fields. We derive our new formulas and demonstrate their effectiveness by computing power, force, and torque (PFT) in a number of example geometries. Free, open-source software implementations of our formulas are available for download online.
Date issued
2015-06
URI
http://hdl.handle.net/1721.1/110217
Department
Massachusetts Institute of Technology. Department of Mathematics
Journal
IEEE Transactions on Antennas and Propagation
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Reid, M. T. Homer, and Steven G. Johnson. “Efficient Computation of Power, Force, and Torque in BEM Scattering Calculations.” IEEE Transactions on Antennas and Propagation 63, no. 8 (August 2015): 3588–3598.
Version: Author's final manuscript
ISSN
0018-926X
1558-2221
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