Self-replicating twins in nanowires.
Based on molecular-dynamics simulations validated with quantum-mechanical calculations, we predict that (111) twin planes in a [111]-oriented GaAs nanowire attain attractive interactions mediated by surface strain. This gives rise to a self-replication mechanism that continuously generates a twin superlattice in a nanowire during growth. We demonstrate significant implications of the twin-twin interaction for the electronic, mechanical, and chemical properties of nanowires. These unique properties suggest potential applications such as catalysts for solar fuel production and nanoscale mechanical dampers.
Collaboratory for Advanced Computing and Simulations, Department of Physics and Astronomy, Department of Chemical Engineering and Materials Science, and Department of Computer Science, University of Southern California , Los Angeles, California 90089-0242, United States.
Zaoshi
Z
Yuan
Aiichiro
A
Nakano
D001152:Arsenicals / Q000737:chemistry*; D005708:Gallium / Q000737:chemistry*; D056004:Molecular Dynamics Simulation; D036103:Nanotechnology; D053770:Nanowires / Q000737:chemistry*; D010316:Particle Size; D013499:Surface Properties
D001152:Arsenicals; C043055:gallium arsenide; D005708:Gallium