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纳米材料的预测和设计是纳米科学与技术领域的长期梦想,该梦想的实现有赖于对生长机理的深刻理解.本文基于我们前期研究揭示的相平衡主导的气-液-固(VLS)生长机理,成功地预测了在1133~1638°C温区内通过氮化Al69Ni31合金颗粒生长Al N纳米线的过程,有关Al N纳米线的生长、共存Al-Ni合金相的晶格参数及形貌演变等预测均得到了定量化实验结果的证实,并界定了相平衡主导的VLS生长机理的适用条件.本文为相平衡主导的VLS生长机理的有效性提供了进一步的实验证据,同时展示了在生长机理的指导下根据相图设计和制备纳米材料的一个实例.
The prediction and design of nanomaterials are long-term dreams in the field of nanoscience and technology, and the realization of this dream depends on a deep understanding of the growth mechanism.Based on the phase equilibrium-dominated VLS growth mechanism revealed in our previous studies, , Successfully predicted the growth of AlN nanowires by nitriding Al69Ni31 alloy particles in the temperature range of 1133 ~ 1638 ° C. In terms of the growth of AlN nanowires, the lattice parameters and morphological evolution of the coexisting Al-Ni alloy phase And other predictions have been confirmed by quantitative experimental results and defined the conditions for the application of phase equilibrium-dominated VLS growth mechanism.This paper provides further experimental evidence for the effectiveness of the phase equilibrium-dominated VLS growth mechanism, Under the guidance of the mechanism according to the phase diagram design and preparation of an example of nanomaterials.