机构地区: 华南师范大学信息光电子科技学院
出 处: 《广东技术师范学院学报》 2013年第3期27-30,共4页
摘 要: 本文利用离散偶极子近似法,研究T型排列的金纳米棒双聚体的表面等离子体耦合共振特性,发现金纳米棒双聚体间距变化时表面等离子体共振消光峰发生红移或者蓝移,适当间距的T型排列金纳米棒双聚体结构可以产生更强的局域表面增强电场.本文对于金纳米棒双体结构的计算结果对于金纳米棒在生物传感方面应用具有一定的参考价值. The extinction spectra and field distribution of the surface plasmon coupling of Au nanorods T- shaped structures are calculated by the discrete dipole approximation. It is demonstrated that the peaks of extinction spectra will be red-shifted or blue-shifted due to the different arrangement and gap parameters. The appropriate separation gap has the stronger local electric field distribution for Au nanorods T-shaped structures. The calculation results are expected to have potential applications in biological sensors.