期刊
ADVANCED MATERIALS
卷 32, 期 38, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202001030
关键词
liquid ordering; liquid-solid interface; nanowires
类别
资金
- SNF Back-Up Schemes Consolidator Grant [BSC-GI0_157705]
- NCCR QSIT
- NCCR MARVEL - Swiss National Science Foundation
- Generalitat de Catalunya [2017 SGR 327]
- Spanish MINECO project [ENE2017-85087-C3]
- Severo Ochoa program from Spanish MINECO [SEV-2017-0706]
- CERCA Programme/Generalitat de Catalunya
- Programa Internacional de Becas la Caixa-Severo Ochoa
- CSIC Research Platform on Quantum Technologies [PTI-001]
- Engineering and Physical Sciences Research Council (EPSRC)
The nature of the liquid-solid interface determines the characteristics of a variety of physical phenomena, including catalysis, electrochemistry, lubrication, and crystal growth. Most of the established models for crystal growth are based on macroscopic thermodynamics, neglecting the atomistic nature of the liquid-solid interface. Here, experimental observations and molecular dynamics simulations are employed to identify the 3D nature of an atomic-scale ordering of liquid Ga in contact with solid GaAs in a nanowire growth configuration. An interplay between the liquid ordering and the formation of a new bilayer is revealed, which, contrary to the established theories, suggests that the preference for a certain polarity and polytypism is influenced by the atomic structure of the interface. The conclusions of this work open new avenues for the understanding of crystal growth, as well as other processes and systems involving a liquid-solid interface.
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