National Center for Nanoscience and Technology, Beijing 100190, PR China.
Adv Mater. 2013 Jul 26;25(28):3863-8. doi: 10.1002/adma.201301181. Epub 2013 May 31.
Due to their unique optical properties and facile processability, nanorods of noble metals are promising for highly effective nanoscale optical devices. Specifically, the local electric field enhancement brought about by plasmon coupling between nanorods in an array configuration shows great potential for optical sensing. Recent results demonstrate that vertical arrays of noble metal nanorods, used as substrates for surface enhanced Raman scattering, can achieve the sensitivity levels required for presymptomatic detection. Meanwhile, advancements in controlled fabrication methods can provide nanorod arrays with well-defined structures and properties, which lays the foundation for highly sensitive and reliable sensing. This research news focuses on this rapidly developing field by introducing the mechanisms, characteristics, and preparation methods of nanorod arrays used in plasmonic sensing, along with a perspective for future development and technical requirements.
由于具有独特的光学性质和易于加工的特点，贵金属纳米棒在高效纳米光学器件方面具有广阔的应用前景。特别是，纳米棒阵列中等离子体耦合引起的局域电场增强在光学传感方面具有很大的潜力。最近的研究结果表明，作为表面增强拉曼散射基底的贵金属纳米棒垂直阵列可以实现用于早期检测的灵敏度水平。同时，可控制备方法的进步可以为纳米棒阵列提供具有明确结构和性能的基底，为高灵敏度和可靠的传感奠定基础。本研究新闻通过介绍等离子体传感用纳米棒阵列的机制、特性和制备方法，以及对未来发展和技术要求的展望，聚焦于这一快速发展的领域。
