Core–shell colloidal particles with dynamically tunable scattering properties

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Core–shell colloidal particles with dynamically tunable scattering properties

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Title: Core–shell colloidal particles with dynamically tunable scattering properties
Author: Meng, Guangnan; Manoharan, Vinothan N.; Perro, Adeline

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Citation: Meng, Guangnan, Vinothan N. Manoharan, and Adeline Perro. 2017. “Core–shell Colloidal Particles with Dynamically Tunable Scattering Properties.” Soft Matter 13 (37): 6293–6296. doi:10.1039/c7sm01740e.
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Abstract: We design polystyrene–poly(N′-isopropylacrylamide-co-acrylic acid) core–shell particles that exhibit dynamically tunable scattering. We show that under normal solvent conditions the shell is nearly index-matched to pure water, and the particle scattering is dominated by Rayleigh scattering from the core. As the temperature or salt concentration increases, both the scattering cross-section and the forward scattering increase, characteristic of Mie scatterers. The magnitude of the change in the scattering cross-section and scattering anisotropy can be controlled through the solvent conditions and the size of the core. Such particles may find use as optical switches or optical filters with tunable opacity.
Published Version: 10.1039/C7SM01740E
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:34832018
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