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Cubic to hexagonal phase transition induced by electric field

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    0342707 - ÚMCH 2011 RIV US eng J - Journal Article
    Giacomelli, F. C. - Silveira, N. - Nallet, F. - Černoch, Peter - Steinhart, Miloš - Štěpánek, Petr
    Cubic to hexagonal phase transition induced by electric field.
    Macromolecules. Roč. 43, č. 9 (2010), s. 4261-4267. ISSN 0024-9297
    R&D Projects: GA ČR GAP208/10/1600
    Institutional research plan: CEZ:AV0Z40500505
    Keywords : order to order transition (OOT) * electric field * block copolymers
    Subject RIV: CF - Physical ; Theoretical Chemistry
    Impact factor: 4.838, year: 2010

    The possibility of electric field induced phase transitions in soft matter systems was studied by means of small-angle X-ray (SAXS) and neutron (SANS) scattering. We have shown experimentally that electric field can induce phase transitions and change internal organization of soft matter systems. A reversible, cubic to hexagonal structure rearrangement was established by the application of an electric field strength ca 1.25 kV/mm in PS-b-PEP/Cyclohexane/Dimethylformamide ternary mixture.
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