期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 586, 期 -, 页码 135-141出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2020.10.078
关键词
Homoepitaxial growth; Nanomaterials; Growth mechanisms
资金
- UNIST (Ulsan National Institute of Science Technology) [1.200036.01]
- National Research Foundation of Korea (NRF) - Korean government (MSIP
- Ministry of Science, ICT & Future Planning) [NRF-2018R1C1B6002342, NRF-2019M1A2A2065612]
- Institute for Basic Science of the Republic of Korea [IBS-R019-D1]
Understanding the material formation mechanisms and their selective realization is crucial for the development of new materials for advanced technologies. The homoepitaxial growth of nanomaterials on bulk materials is not thermodynamically favorable due to higher specific surface energies. Two key factors for favorable growth were identified: the crystal facet stabilization effect of capping agents during the early stages of growth, and the change in the dominant growth mode during the reaction in a closed system. Spontaneous, homoepitaxial growth of nanomaterials enables the realization of unprecedented, complex, hierarchical, single-crystalline structures required for future technologies.
Material formation mechanisms and their selective realization must be well understood for the development of new materials for advanced technologies. Since nanomaterials demonstrate higher specific surface energies compared to their corresponding bulk materials, the homoepitaxial growth of nanomaterials on bulk materials is not thermodynamically favorable. We observed the homoepitaxial growth of nanowires with constant outer diameters on bulk materials in two different, solution-based growth systems. We also suggested potential mechanisms of the spontaneous and homoepitaxial growth of the ZnO nanostructures based on the characterization results. The first key factor for favorable growth was the crystal facet stabilization effect of capping agents during the early stages of growth. The second factor was the change in the dominant growth mode during the reaction in a closed system. The spontaneous, homoepitaxial growth of nanomaterials enables the realization of unprecedented, complex, hierarchical, single-crystalline structures required for future technologies. (C) 2020 Elsevier Inc. All rights reserved.
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