Koya Alemayehu Nana, Zhu Xiangchao, Ohannesian Nareg, Yanik A Ali, Alabastri Alessandro, Proietti Zaccaria Remo, Krahne Roman, Shih Wei-Chuan, Garoli Denis
Istituto Italiano di Tecnologia, via Morego 30, I-16163 Genova, Italy.
Department of Electrical and Computer Engineering, University of California, Santa Cruz, California 95064, United States.
ACS Nano. 2021 Apr 27;15(4):6038-6060. doi: 10.1021/acsnano.0c10945. Epub 2021 Apr 2.
The field of plasmonics is capable of enabling interesting applications in different wavelength ranges, spanning from the ultraviolet up to the infrared. The choice of plasmonic material and how the material is nanostructured has significant implications for ultimate performance of any plasmonic device. Artificially designed nanoporous metals (NPMs) have interesting material properties including large specific surface area, distinctive optical properties, high electrical conductivity, and reduced stiffness, implying their potentials for many applications. This paper reviews the wide range of available nanoporous metals (such as Au, Ag, Cu, Al, Mg, and Pt), mainly focusing on their properties as plasmonic materials. While extensive reports on the use and characterization of NPMs exist, a detailed discussion on their connection with surface plasmons and enhanced spectroscopies as well as photocatalysis is missing. Here, we report on different metals investigated, from the most used nanoporous gold to mixed metal compounds, and discuss each of these plasmonic materials' suitability for a range of structural design and applications. Finally, we discuss the potentials and limitations of the traditional and alternative plasmonic materials for applications in enhanced spectroscopy and photocatalysis.
等离子体激元学领域能够在从紫外到红外的不同波长范围内实现有趣的应用。等离子体激元材料的选择以及材料的纳米结构方式对任何等离子体激元器件的最终性能都有重大影响。人工设计的纳米多孔金属（NPMs）具有有趣的材料特性，包括大比表面积、独特的光学特性、高电导率和降低的刚度，这意味着它们在许多应用中具有潜力。本文综述了多种可用的纳米多孔金属（如金、银、铜、铝、镁和铂），主要关注它们作为等离子体激元材料的特性。虽然存在大量关于NPMs的使用和表征的报告，但缺少关于它们与表面等离子体激元以及增强光谱学和光催化之间联系的详细讨论。在这里，我们报告了所研究的不同金属，从最常用的纳米多孔金到混合金属化合物，并讨论了每种等离子体激元材料在一系列结构设计和应用中的适用性。最后，我们讨论了传统和替代等离子体激元材料在增强光谱学和光催化应用中的潜力和局限性。
