Application of the lattice gas automata technique to modelling wave interaction with biological media

We present a new computational electromagnetics technique based on the lattice gas automata approach and show how it can be applied to the simulation of electromagnetic wave interaction with biological systems. The numerical simulation of wave propagation and scattering in electromagnetics has almost universally been approached using a differential equation description of a problem. An alternative and relatively new computational electromagnetics approach are lattice gas automata. A lattice gas automaton (LGA) is an extremely large regular lattice of simple interconnected cells (a few bits per cell), with each cell of the lattice implementing the same simple rule. We have developed and demonstrated LGA algorithms for simulating a variety of electromagnetic propagation and scattering problems. We introduce new algorithms which enable the LGA approach to be used for modelling inhomogeneous dielectric media and show how these can be applied to modelling field interaction with biological systems.