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Published August 19, 2020 | Supplemental Material
Journal Article Open

Light-matter interactions in films of randomly distributed unidirectionally scattering dielectric nanoparticles


We theoretically investigate the light scattering characteristics of monolayer films composed of randomly positioned unidirectionally scattering dielectric nanoparticles that support overlapping electric and magnetic dipole modes. We show using generalized Mie theory that the optical response of both sparse and dense nanoparticle films can be understood from the scattering properties of the individual dielectric nanoparticles, despite random particle–particle coupling effects and validate these results with full-wave electromagnetic simulations. The spectral, angular, and polarization dependent reflection and transmission scattering characteristics of these random particle films are also shown to be strikingly different from those of homogeneous dense solid thin films of equivalent dielectric permittivity.

Additional Information

© 2020 American Chemical Society. Received: April 5, 2020; Published: June 23, 2020. This work was supported by the Army Research Office under MURI Grant W911NF-18-1-0240. We thank M. Su and R. Sokhoyan for commentary and discussions, and also H. Andaraarachchi and N. Uner of the Kortshagen group at U. Minnesota and the Thimsen group at Washington University for useful discussions. This research used the resources of the National Energy Research Scientific Computing Center (NERSC), a U.S. Department of Energy Office of Science User Facility operated under Contract No. DE-AC02-05CH11231. Author Contributions: P.R.W. and H.A.A. devised the research idea. P.R.W. performed simulations and interpreted results. H.A.A. oversaw the project progress. Both authors contributed to writing and editing the manuscript. The authors declare no competing financial interest.

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August 19, 2023
October 20, 2023