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Title: Transparent bulk-size nanocomposites with high inorganic loading

With relatively high nanoparticle loading in polymer matrices, hybrid nanocomposites made by colloidal dispersion routes suffer from severe inhomogeneous agglomeration, a phenomenon that deteriorates light transmission even when the refractive indices of the inorganic and organic phases are closely matched. The dispersion of particles in a matrix is of paramount importance to obtain composites of high optical quality. Here, we describe an innovative, yet straightforward method to fabricate monolithic transparent hybrid nanocomposites with very high particle loading and high refractive index mismatch tolerance between the inorganic and organic constituents. We demonstrate 77% transmission at 800 nm in a 2 mm-thick acrylate polymer nanocomposite containing 61 vol. % CaF{sub 2} nanoparticles. Modeling shows that similar performance could easily be obtained with various inorganic phases relevant to a number of photonic applications.
Authors:
 [1] ;  [1] ;  [2] ;  [2]
  1. CREOL, College of Optics and Photonics, University of Central Florida, Orlando, Florida 32816 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
22486232
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 24; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACRYLATES; AGGLOMERATION; CALCIUM FLUORIDES; DISPERSIONS; LIGHT TRANSMISSION; MATRICES; NANOCOMPOSITES; NANOPARTICLES; POLYMERS; REFRACTIVE INDEX; SIMULATION