Next Article in Journal
Innovative Biochar-Based Composite Fibres from Recycled Material
Previous Article in Journal
Nanomaterials Application in Endodontics
Previous Article in Special Issue
Size Effects in Optical and Magneto-Optical Response of Opal-Cobalt Heterostructures
Article

An Experimental and Theoretical Determination of Oscillatory Shear-Induced Crystallization Processes in Viscoelastic Photonic Crystal Media

1
Department of Physics, Prifysgol Aberystwyth University, Aberystwyth SY23 3BZ, UK
2
Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge CB3 0HE, UK
*
Authors to whom correspondence should be addressed.
Academic Editor: Daniela Kovacheva
Materials 2021, 14(18), 5298; https://doi.org/10.3390/ma14185298
Received: 29 June 2021 / Revised: 31 August 2021 / Accepted: 3 September 2021 / Published: 14 September 2021
(This article belongs to the Special Issue Feature Papers for Section Advanced Nanomaterials and Nanotechnology)
A study is presented of the oscillatory shear-ordering dynamics of viscoelastic photonic crystal media, using an optical shear cell. The hard-sphere/“sticky”-shell design of these polymeric composite particles produces athermal, quasi-solid rubbery media, with a characteristic viscoelastic ensemble response to applied shear. Monotonic crystallization processes, as directly measured by the photonic stopband transmission, are tracked as a function of strain amplitude, oscillation frequency, and temperature. A complementary generic spatio-temporal model is developed of crystallization due to shear-dependent interlayer viscosity, giving propagating crystalline fronts with increasing applied strain, and a gradual transition from interparticle disorder to order. The introduction of a competing shear-induced flow degradation process, dependent on the global shear rate, gives solutions with both amplitude and frequency dependence. The extracted crystallization timescales show parametric trends which are in good qualitative agreement with experimental observations. View Full-Text
Keywords: polymers; shear-induced crystallization; photonic crystals; composite materials; viscoelasticity polymers; shear-induced crystallization; photonic crystals; composite materials; viscoelasticity
Show Figures

Figure 1

MDPI and ACS Style

Finlayson, C.E.; Rosetta, G.; Baumberg, J.J. An Experimental and Theoretical Determination of Oscillatory Shear-Induced Crystallization Processes in Viscoelastic Photonic Crystal Media. Materials 2021, 14, 5298. https://doi.org/10.3390/ma14185298

AMA Style

Finlayson CE, Rosetta G, Baumberg JJ. An Experimental and Theoretical Determination of Oscillatory Shear-Induced Crystallization Processes in Viscoelastic Photonic Crystal Media. Materials. 2021; 14(18):5298. https://doi.org/10.3390/ma14185298

Chicago/Turabian Style

Finlayson, Chris E., Giselle Rosetta, and Jeremy J. Baumberg 2021. "An Experimental and Theoretical Determination of Oscillatory Shear-Induced Crystallization Processes in Viscoelastic Photonic Crystal Media" Materials 14, no. 18: 5298. https://doi.org/10.3390/ma14185298

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop