4.6 Article

A route to hierarchical assembly of colloidal diamond

期刊

SOFT MATTER
卷 18, 期 2, 页码 304-311

出版社

ROYAL SOC CHEMISTRY
DOI: 10.1039/d1sm01418h

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资金

  1. Department of the Navy, Office of Naval Research under ONR [N00014-18-1-2497]
  2. University of Michigan Rackham Predoctoral Fellowship Program
  3. National Science Foundation [ACI-1053575, DMR 140129]

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The study explores new ways to assemble diamond using modified gyrobifastigial (mGBF) nanoparticles, comparing the likelihood of defects in diamond self-assembled via mGBF vs. the current focus shape for assembling diamond, truncated tetrahedra. The potential route for realizing mGBF particles by dimerizing triangular prisms using attractive patches is introduced, along with the impact of this superstructure on photonic properties.
Photonic crystals, appealing for their ability to control light, are constructed from periodic regions of different dielectric constants. Yet, the structural holy grail in photonic materials, diamond, remains challenging to synthesize at the colloidal length scale. Here we explore new ways to assemble diamond using modified gyrobifastigial (mGBF) nanoparticles, a shape that resembles two anti-aligned triangular prisms. We investigate the parameter space that leads to the self-assembly of diamond, and we compare the likelihood of defects in diamond self-assembled via mGBF vs. the nanoparticle shape that is the current focus for assembling diamond, the truncated tetrahedra. We introduce a potential route for realizing mGBF particles by dimerizing triangular prisms using attractive patches, and we report the impact of this superstructure on the photonic properties.

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