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Phase diagrams of laser-processed nanoparticles of brass

机译:激光处理黄铜纳米粒子的相图

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Nanoparticles of brass are prepared by ablation of a brass target in ethanol using radiation of a copper-vapor laser at various laser fluences. The nanoparticles are characterized by TEM and optical spectroscopy. The multipulse laser irradiation leads to formation both the nanoparticles in liquid and well-ordered micro-structures on a surface of a target. It is revealed that both the morphology and absorption spectra of brass nanoparticles depend on presence of the micro-structures. Nanoparticles with the various phase diagrams are formed from a flat brass surface and from the same surface with micro-structures. The results are compared with a model of phase diagrams, in which size and composition effects are taken into account.
机译:黄铜的纳米粒子是通过在各种激光注量下使用铜蒸气激光辐射将乙醇中的黄铜靶烧蚀而制备的。纳米颗粒通过TEM和光谱学表征。多脉冲激光辐照导致在目标表面上形成液态纳米颗粒和有序的微结构。结果表明,黄铜纳米颗粒的形貌和吸收光谱均取决于微观结构的存在。具有不同相图的纳米粒子是由平坦的黄铜表面和具有微观结构的同一表面形成的。将结果与相图模型进行比较,其中考虑了尺寸和组成效应。

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