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dc.contributor.authorSnoswell, David REen
dc.contributor.authorFinlayson, Chris Een
dc.contributor.authorZhao, Qibinen
dc.contributor.authorBaumberg, Jeremyen
dc.date.accessioned2019-06-05T10:29:24Z
dc.date.available2019-06-05T10:29:24Z
dc.date.issued2015-11en
dc.identifier.issn1539-3755
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/293400
dc.description.abstractWe present a study of the dynamic shear ordering of viscoelastic photonic crystals, based on core-shell polymeric composite particles. Using an adapted shear-cell arrangement, the crystalline ordering of the material under conditions of oscillatory shear is interrogated in real time, through both video imaging and from the optical transmission spectra of the cell. In order to gain a deeper understanding of the macroscopic influences of shear on the crystallization process in this solvent-free system, the development of bulk ordering is studied as a function of the key parameters including duty cycle and shear-strain magnitude. In particular, optimal ordering is observed from a prerandomized sample at shear strains of around 160%, for 1-Hz oscillations. This ordering reaches completion over time scales of order 10 s. These observations suggest significant local strains are needed to drive nanoparticles through energy barriers, and that local creep is needed to break temporal symmetry in such high-viscosity nanoassemblies. Crystal shear-melting effects are also characterized under conditions of constant shear rate. These quantitative experiments aim to stimulate the development of theoretical models which can deal with the strong local particle interactions in this system.
dc.description.sponsorshipThis work is supported by EPSRC Grants No. EP/G060649/1, No. EP/E040241, and No. EP/H027130/1, and ERC Grant No. LINASS 320503
dc.languageengen
dc.publisherAmerican Physical Society
dc.titleReal-time measurements of crystallization processes in viscoelastic polymeric photonic crystals.en
dc.typeArticle
prism.endingPage052315
prism.issueIdentifier5en
prism.publicationDate2015en
prism.publicationNamePhysical Review E - Statistical, Nonlinear, and Soft Matter Physicsen
prism.startingPage052315
prism.volume92en
dc.identifier.doi10.17863/CAM.40555
dcterms.dateAccepted2015-04-17en
rioxxterms.versionofrecord10.1103/PhysRevE.92.052315en
rioxxterms.versionVoR*
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2015-11en
dc.contributor.orcidBaumberg, Jeremy [0000-0002-9606-9488]
dc.identifier.eissn1550-2376
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEPSRC (EP/G060649/1)
pubs.funder-project-idEPSRC (EP/L027151/1)
pubs.funder-project-idEuropean Research Council (320503)
pubs.funder-project-idEPSRC (EP/H027130/1)
pubs.funder-project-idEPSRC (EP/E040241/1)
cam.issuedOnline2015-11-30en
dc.identifier.urlhttps://journals.aps.org/pre/abstract/10.1103/PhysRevE.92.052315en


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