Nanorice and nanospears from polymer nanospheres

Devesh Srivastava, Ilsoon Lee

    Research output: Research - peer-reviewArticle

    • 14 Citations

    Abstract

    The shaping of nanoscale structures using ordered nanopored membranes and a simple solvent-aided nanoinjection molding process of polymer nanospheres was investigated. The commercially available alumina membranes was used as templates and polystyrenes (PS) nanospheres for the fabrication of controlled aspect ratio and terminal-contour-controlled nanoparticles. The heat treatments allowed the nanoparticles to coalescence and wet from the alumina nanopore walls and form nanoparticles with a controlled aspect ratio and an interesting terminal curvature. The size of the nanospheres was observed to be in between the large and the small pores so that the nanospheres are trapped only in the large pores. The remaining polymer particles were filtered using a centrifuge and washed several times in deionized (DI) water, to remove any residual NaOH. By exploiting non-uniform heating and resulting or capillary forces of nanospheres filled inside the cylindrical nanopores of membranes a novel nanostructured nanorice and nanospear was obtained.

    LanguageEnglish (US)
    Pages2471-2475
    Number of pages5
    JournalAdvanced Materials
    Volume18
    Issue number18
    DOIs
    StatePublished - Sep 18 2006

    Profile

    Nanospheres
    Polymers
    Nanoparticles
    Membranes
    Nanopores
    Aluminum Oxide
    Aspect ratio
    Alumina
    Deionized water
    Polystyrenes
    Centrifuges
    Coalescence
    Molding
    Heat treatment
    Heating
    Fabrication

    ASJC Scopus subject areas

    • Materials Science(all)

    Cite this

    Nanorice and nanospears from polymer nanospheres. / Srivastava, Devesh; Lee, Ilsoon.

    In: Advanced Materials, Vol. 18, No. 18, 18.09.2006, p. 2471-2475.

    Research output: Research - peer-reviewArticle

    Srivastava D, Lee I. Nanorice and nanospears from polymer nanospheres. Advanced Materials. 2006 Sep 18;18(18):2471-2475. Available from, DOI: 10.1002/adma.200601123
    Srivastava, Devesh ; Lee, Ilsoon. / Nanorice and nanospears from polymer nanospheres. In: Advanced Materials. 2006 ; Vol. 18, No. 18. pp. 2471-2475
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