Position- and Orientation-Controlled Growth of Wulff-Shaped Colloidal Crystals Engineered with DNA

Lin Sun, Haixin Lin, Yuanwei Li, Wenjie Zhou, Jingshan S. Du, Chad A. Mirkin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Colloidal crystals have emerged as promising candidates for building optical microdevices. Techniques now exist for synthesizing them with control over their nanoscale features (e.g., particle compositions, sizes, shapes, and lattice parameters and symmetry); however, the ability to tune macroscale structural features, such as the relative positions of crystals to one another and lattice orientations, has yet to be realized. Here, inspiration is drawn from epitaxial growth strategies in atomic crystallization, and patterned substrates are prepared that, when used in conjunction with DNA-mediated nanoparticle crystallization, allow for control over individual Wulff-shaped crystal growth, location, and orientation. In addition, the approach allows exquisite control over the patterned substrate/crystal lattice mismatch, something not yet realized for any epitaxy process. This level of structural control is a significant step toward realizing complex, integrated devices with colloidal crystal components, and this approach provides a model system for further exploration in epitaxy systems.

Original languageEnglish (US)
Article number2005316
JournalAdvanced Materials
Volume32
Issue number47
DOIs
StatePublished - Nov 26 2020

Keywords

  • DNA-programmable assembly
  • Wulff constructs
  • colloidal crystals
  • controlled orientation and position
  • epitaxial growth

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Position- and Orientation-Controlled Growth of Wulff-Shaped Colloidal Crystals Engineered with DNA'. Together they form a unique fingerprint.

Cite this