Reduced-Dimensionality Al Nanocrystals: Nanowires, Nanobars, and Nanomoustaches

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2024-05-28 DOI:10.1021/acs.nanolett.4c00895

David Solti, Christian R. Jacobson, J. Alexander Orion Yates, Benjamin Franklin Hammel, Gopal Narmada Naidu, Catherine E. Arndt, Aaron Bayles, Yigao Yuan, Parmeet Dhindsa, Jessica T. Luu, Corbin Farr, Gang Wu, Henry O. Everitt, Ah-Lim Tsai, Sadegh Yazdi, Peter Nordlander* and Naomi J. Halas*,

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Abstract

Aluminum nanocrystals created by catalyst-driven colloidal synthesis support excellent plasmonic properties, due to their high level of elemental purity, monocrystallinity, and controlled size and shape. Reduction in the rate of nanocrystal growth enables the synthesis of highly anisotropic Al nanowires, nanobars, and singly twinned “nanomoustaches”. Electron energy loss spectroscopy was used to study the plasmonic properties of these nanocrystals, spanning the broad energy range needed to map their plasmonic modes. The coupling between these nanocrystals and other plasmonic metal nanostructures, specifically Ag nanocubes and Au films of controlled nanoscale thickness, was investigated. Al nanocrystals show excellent long-term stability under atmospheric conditions, providing a practical alternative to coinage metal-based nanowires in assembled nanoscale devices.

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降维铝纳米晶体：纳米线、纳米棒和纳米胡子。

通过催化剂驱动的胶体合成技术生成的纳米铝晶体，由于其元素纯度高、单晶性强、尺寸和形状可控，因而具有出色的等离子特性。降低纳米晶体生长速度可合成高度各向异性的铝纳米线、纳米棒和单孪生 "纳米胡子"。电子能量损失光谱用于研究这些纳米晶体的等离子特性，其能量范围之广是绘制其等离子模式所必需的。研究还探讨了这些纳米晶体与其他等离子金属纳米结构（特别是银纳米立方体和厚度可控的纳米级金薄膜）之间的耦合。铝纳米晶体在大气条件下显示出卓越的长期稳定性，为组装纳米级设备中的金属基纳米线提供了一种实用的替代方案。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.