2013/01/04 by Andrés E. Dolinko, Dolinko, Andrés E., Diana C. Skigin +1
Agricultural and Biological Sciences · Engineering · Physics and Astronomy · #78-04 #Computational Physics (physics.comp-ph) #FOS: Physical sciences #Fern and Epiphyte Biology #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Optics (physics.optics) #Photonic Crystals and Applications #Plant and animal studies #Slime Mold and Myxomycetes Research
paper · pdf · doi:10.48550/arxiv.1301.0754
openalex publication_date 2013/01/04 · openalex created_date 2022/09/05 · openalex updated_date 2026/07/28
We present a method based on a time domain simulation of wave propagation\nthat allows studying the optical response of a broad range of dielectric\nphotonic structures. This method is particularly suitable for dealing with\ncomplex biological structures. One of the main features of the proposed\napproach is the simple and intuitive way of defining the setup and the photonic\nstructure to be simulated, which can be done by feeding the simulation with a\ndigital image of the structure. We also develop a set of techniques to process\nthe behavior of the evolving waves within the simulation. These techniques\ninclude a direction filter, that permits decoupling of waves travelling\nsimultaneously in different directions, a dynamic differential absorber, to\ncancel the waves reflected at the edges of the simulation space, a\nmulti-frequency excitation scheme based on a filter that allows decoupling\nwaves of different wavelengths travelling simultaneously, and a\nnear-to-far-field approach to evaluate the resulting wavefield outside the\nsimulation domain. We validate the code and, as an example, apply it to the\ncomplex structure found in a microorganism called Diachea leucopoda, which\nexhibits a multicolor iridescent appearance.\n