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Issue 37, 2017
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Core–shell colloidal particles with dynamically tunable scattering properties

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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.

Graphical abstract: Core–shell colloidal particles with dynamically tunable scattering properties

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Publication details

The article was received on 29 Aug 2017, accepted on 29 Aug 2017 and first published on 30 Aug 2017


Article type: Communication
DOI: 10.1039/C7SM01740E
Citation: Soft Matter, 2017,13, 6293-6296
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    Core–shell colloidal particles with dynamically tunable scattering properties

    G. Meng, V. N. Manoharan and A. Perro, Soft Matter, 2017, 13, 6293
    DOI: 10.1039/C7SM01740E

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