journal article·2022-09-05Open access

Modeling Structural Colors from Disordered One-Component Colloidal Nanoparticle-Based Supraballs Using Combined Experimental and Simulation Techniques

Anvay Patil, Christian M. Heil, Bram Vanthournout, Saranshu Singla, Ziying Hu, Jan Ilavsky, Nathan C. Gianneschi, Matthew D. Shawkey, Sunil K. Sinha, Arthi Jayaraman, Ali Dhinojwala

ACS Materials Letters· Volume 4· Issue 9

Abstract

Bright, saturated structural colors in birds have inspired synthesis of self-assembled, disordered arrays of assembled nanoparticles with varied particle spacings and refractive indices. However, predicting colors of assembled nanoparticles, and thereby guiding their synthesis, remains challenging due to the effects of multiple scattering and strong absorption. Here, we use a computational approach to first reconstruct the nanoparticles’ assembled structures from small-angle scattering measurements and then input the reconstructed structures to a finite-difference time-domain method to predict their color and reflectance. This computational approach is successfully validated by comparing its predictions against experimentally measured reflectance and provides a pathway for reverse engineering colloidal assemblies with desired optical and photothermal properties.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Nonlinear Optical Materials Studies · Dyeing and Modifying Textile Fibers · Pigment Synthesis and Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Polymer Science and Polymer Engineering, The University of Akron, 170 University Ave, Akron, Ohio 44325, United States

Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy St, Newark, Delaware 19716, United States

Evolution and Optics of Nanostructures Group, Department of Biology, Ghent University, Ledeganckstraat 35, Ghent 9000, Belgium

Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States

X-Ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States

Department of Materials Science and Engineering, Department of Biomedical Engineering, Department of Pharmacology, International Institute of Nanotechnology, Simpson-Querrey Institute, Chemistry of Life Processes Institute, Lurie Cancer Center, Northwestern University, Evanston, Illinois 60208, United States

Department of Physics, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States

Department of Materials Science and Engineering, University of Delaware, 201 DuPont Hall, Newark, Delaware 19716, United States

Funding

Air Force Office of Scientific Research · Fonds Wetenschappelijk Onderzoek · Human Frontier Science Program · U.S. Department of Energy

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