{"paper":{"title":"Effective permittivity of random plasmonic composites","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Ashok S. Sangani, Radhakrishna Sureshkumar, Satvik N. Wani","submitted_at":"2012-02-17T16:28:39Z","abstract_excerpt":"An effective-medium theory (EMT) is developed to predict the effective permittivity \\epsilon_eff of dense random dispersions of high optical-conductivity metals such as Ag, Au and Cu. Dependence of \\epsilon_eff on the volume fraction \\phi, a microstructure parameter \\kappa related to the static structure factor and particle radius a is studied. In the electrostatic limit, the upper and lower bounds of \\kappa correspond to Maxwell-Garnett and Bruggeman EMTs respectively. Finite size effects are significant when |\\beta^2(ka/n)^3| becomes O(1) where \\beta, k, and n denote the nanoparticle polariz"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.4413","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}