Elucidation of Structural Information of Colloidal Assemblies from Binary Particles using Scattering Techniques

POSTER

Abstract

Self-assembly plays an important role in materials and life sciences, for example, in production of structural colors in various taxa, folding and assembly of proteins in living cells, and creation of metamaterials by self-assembly of complex nanostructures. Previously we have reported a simple one-pot emulsion-based process to form photonic colloidal assemblies called supraballs. In this work, we have measured the small angle neutron scattering from supraball assemblies constructed using binary mixtures of melanin and silica particles. The neutron scattering results can be used to determine the various partial structure factors of the nanoparticles, which is important in understanding scattering of visible light. Designing tunable structural colors is of interest for many applications including cosmetics, paints, and food colorings.

*This work is supported by Air Force Office of Scientific Research (FA9550-18-1-0142) and access to vSANS was provided by the Center for High Resolution Neutron Scattering (DMR-1508249) at the National Institute of Standards and Technology.

Presenters

  • Anvay Patil

    • Polymer Science, The University of Akron

Authors

  • Anvay Patil

    • Polymer Science, The University of Akron

  • Saranshu Singla

    • Polymer Science, The University of Akron
    • Univ of Akron

  • Ziying Hu

    • Chemistry, Northwestern University

  • Jing-Jin Song

    • Materials Science & Engineering, University of California San Diego

  • Markus Bleuel

    • Center for Neutron Research, National Institute of Standards and Technology
    • National Institute of Standards and Technology Center for Neutron Research
    • NIST
    • NIST Center for Neutron Research, National Institute of Standards and Technology
    • National Institute of Standards and Technology

  • Nathan C. Gianneschi

    • Chemistry, Northwestern University

  • Sunil K Sinha

    • Physics, University of California San Diego
    • Department of Physics, University of California, San Diego

  • Ali N Dhinojwala

    • Polymer Science, The University of Akron
    • Univ of Akron