当前位置: X-MOL 学术Nanophotonics › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Toward laser-induced tuning of plasmonic response in high aspect ratio gold nanostructures
Nanophotonics ( IF 7.5 ) Pub Date : 2022-08-05 , DOI: 10.1515/nanoph-2022-0193
Mario Pelaez-Fernandez, Bruno Majérus, Daniel Funes-Hernando, Romain Dufour, Jean-Luc Duvail, Luc Henrard, Raul Arenal

High aspect-ratio gold nanostructures sustain Fabry–Perot-like surface plasmon responses from infrared to visible light energies. We show that some resonances can be tuned by means of laser irradiation, where low energy modes stay unperturbed. After laser irradiation, gold nanowires’ tips are transformed into nanoparticles of various sizes joint to gold nanowires, producing high aspect-ratio half-dumbbells and dumbbells structures. The plasmonic behaviour of both the nanowires and the newly created nanostructures has been characterised by in-depth monochromated electron energy loss spectroscopy (EELS) developed in a transmission electron microscope (TEM) and state-of-the-art discrete dipole approximation (DDA) calculations. All these analyses serve as experimental proof of the selective tuning (or robustness) of the plasmonic modes of the nanostructures in a specific spectral range, which is of critical interest regarding applications for sensing devices, nano-sources or nanophotonic waveguide, as well as optical remote control.

中文翻译:

朝着激光诱导的高纵横比金纳米结构中等离子体响应的调谐

高纵横比金纳米结构维持从红外到可见光能量的类法布里-珀罗表面等离子体响应。我们表明,一些共振可以通过激光照射来调节,其中低能量模式保持不受干扰。激光照射后,金纳米线的尖端转化为各种尺寸的纳米颗粒,与金纳米线连接,产生高纵横比的半哑铃和哑铃结构。纳米线和新创建的纳米结构的等离子体行为已通过在透射电子显微镜 (TEM) 中开发的深入单色电子能量损失光谱 (EELS) 和最先进的离散偶极子近似 (DDA) 进行表征计算。
更新日期:2022-08-05
down
wechat
bug