Thermal detection of surface plasmons on gold nanohole arrays
- ISSN号:0379-4148
- 期刊名称:《物理》
- 时间:0
- 分类:O647.33[理学—物理化学;理学—化学] TB383[一般工业技术—材料科学与工程]
- 作者机构:[1]Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China, [2]Beijing Key Laboratory of Nano-Photonics and Nano-Structure (NPNS), Department of Physics, Capital Normal University, Beijing 100048 China, [3]Information Awareness and Confrontation, Beijing Institute of Technology, Beijing 100081, China, [4]Division of Solid State Physics, Lund University, Lund 22100, Sweden
- 相关基金:This work was supported by National Natural Science Foundation of China (10874233), National Basic Research Program of China (2009CB930700)and Knowledge Innovation Project of Chinese Academy of Sciences ( KJ CX2 -EW- W04).
关键词:
纳米孔阵列结构, 表面等离子体, 检测, 黄金, 热电动势, 激光激发, 薄膜热电偶, 纳米孔结构, surface plasmons, thermal effect, thin film thermocouple, periodic structure
中文摘要:
我们使用了一个薄电影的热电偶检测在 Au nanohole 数组结构激动的表面电浆子的热效果。我们发现有周期的 nanohole 结构的 Au 电影的热起电的力量比为在给定的力量的 785-nm 激光刺激的一部赤裸的 Au 电影的大三倍。这效果被局部性的表面电浆子的反响的刺激在 nanoholes 引起。另外,我们发现有像哑铃的 nanohole 数组的 Au 电影的热起电的力量(EMF ) 强烈取决于事件极化。热 EMF 是最大当刺激光被极化时对哑铃的长轴垂直。
英文摘要:
We used a thin-film thermocouple to detect the thermal effect of surface plasmons excited in Au nanohole array structures. We found that the thermal electromotive force of Au film with periodic nanohole structures is three times greater than that of a bare Au film for 785-nm laser excitation at a given power. This effect is caused by the resonant excitation of localized surface plasmons in the nanoholes. In addition, we found that the thermal electromotive force (EMF) of the Au film with dumbbell-like nanohole arrays depends strongly on the incident polarization. The thermal EMF is the greatest when the excitation light is polarized perpendicular to the long axis of the dumbbell.