双金属 Ag-Cu 薄膜向等离子体激元活性复合纳米结构的转变。
Transformation of bimetallic Ag-Cu thin films into plasmonically active composite nanostructures.
机构信息
Institute of Nanotechnology and Materials Engineering, Advanced Materials Center, Gdansk University of Technology, ul. G. Narutowicza 11/12, 80-233, Gdańsk, Poland.
Department of Hydrogen Energy, Faculty of Energy and Fuels, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059, Kraków, Poland.
出版信息
Sci Rep. 2023 Jun 21;13(1):10107. doi: 10.1038/s41598-023-37343-2.
Formation of plasmonically active silver, copper and composite silver-copper nanostructures were studied in this paper. Metallic nanostructures were fabricated by thermal disintegration, so called dewetting, of the thin films in an argon atmosphere. The formation process of the nanostructures was in-situ observed by a novel method, based on resistance measurements. The influence of the material and thickness of the initial thin film on temperature of their disintegration was investigated. Electrical measurements were validated by scanning electron microscopy observations, while metallic the behavior of nanostructures was studied by XPS method. The formation of silver-copper nanocomposite structures was confirmed by UV-vis spectroscopy. Plasmon resonance with two characteristic peaks for nanocomposite structures was observed.
本文研究了等离子体活性银、铜和复合银铜纳米结构的形成。通过在氩气气氛中使薄膜热离解，即所谓的去湿，来制备金属纳米结构。纳米结构的形成过程通过一种基于电阻测量的新方法进行原位观察。研究了初始薄膜的材料和厚度对其离解温度的影响。通过扫描电子显微镜观察验证了电测量，而通过 XPS 方法研究了纳米结构的金属性质。通过紫外-可见光谱证实了银-铜纳米复合材料结构的形成。观察到了具有两个特征峰的纳米复合材料结构的等离子体共振。
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