Journal
PHYSICAL REVIEW E
Volume 81, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.81.020401
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Funding
- UK EPSRC-GB [EP/C511786/1, EP/G060649/1, EP/E040241]
- EPSRC [EP/E040241/1, EP/H027130/1, EP/G060649/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/C511786/1, EP/H027130/1, EP/G060649/1, EP/E040241/1] Funding Source: researchfish
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Optical scattering spectra are recorded in situ on flowing colloidal polymeric nanocomposites which are sheared into photonic crystals at 150 degrees C using a high-pressure quartz-cell multipass rheometer. Broadband spectroscopy of the resonant Bragg scattering peak allows the direct observation of crystal formation and melting of monodisperse core-shell particles. A range of flow conditions of this solventless, highly viscous melt reveals four distinct regimes of crystal growth and decay which match a simple rheological model. Extraction of crystal thickness, order and lattice spacing are validated by one-dimensional electromagnetic simulations.
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