Particle analogs of electrons in colloidal crystals
Abstract
The crystallization of nanoparticles can be controlled by functionalizing them with DNA strands that direct assembly through hybridization. The design rules for interactions between pairs of particles resemble those for ionic compounds. Inspired by molecular dynamics simulations, Girard et al. show that larger particles (∼10 nanometers in diameter) that have mutual repulsive interactions can form a stable lattice only if much smaller conjugate particles (∼1.5 nanometers in diameter) are present. These smaller particles are mobile and diffuse through the lattice, so the bonding interaction resembles the classical picture of electrons in metals.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 21, 2019
- Source ID
- 10.1126/science.aaw8237
Entities
People
- Anindita Das
- Byeongdu Lee
- Chad Mirkin
- Jingshan Du
- Martin Girard
- Monica Olvera de la Cruz
- Shunzhi Wang
- Vinayak P. Dravid
- Ziyin N. Huang
Organizations
- Air Force Office of Scientific Research
- Argonne National Laboratory
- National Cancer Institute
- National Science Foundation
- Northwestern University
- Office of Naval Research
- Sherman Fairchild Foundation
- United States Department of Energy