纳米互连等离子体二聚体的加热效应

Q4 Engineering
R. Raman, J. Grasso, B. Willis
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引用次数: 1

摘要

具有电连接的等离子体纳米结构由于其强烈的光-物质相互作用而具有作为新型电光器件的潜在应用。在相邻纳米结构之间存在纳米间隙的等离子体二聚体在共振时能够增强局部电磁场,从而提高性能。在这项研究中,我们使用光学消光测量和高分辨率电子显微镜成像来研究电互连等离子体二聚体的热稳定性及其光学和形态学性质。实验测量和时域有限差分(FDTD)模拟相结合,表征了温度对玻璃基板上大型金纳米结构阵列等离子体特性的影响。实验表明,当加热到210°C时,消光峰出现连续的蓝移。显微镜测量显示,这些峰移是由于纳米棒收缩和纳米间隙距离增加的形态变化。加热前后纳米结构的模拟结果与实验结果吻合较好。结果表明,热处理后的等离子体特性保持不变,但器件设计时需要考虑峰移。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Heating Effects on Nanofabricated Plasmonic Dimers with Interconnects
Plasmonic nanostructures with electrical connections have potential applications as new electro-optic devices due to their strong light–matter interactions. Plasmonic dimers with nanogaps between adjacent nanostructures are especially good at enhancing local electromagnetic (EM) fields at resonance for improved performance. In this study, we use optical extinction measurements and high-resolution electron microscopy imaging to investigate the thermal stability of electrically interconnected plasmonic dimers and their optical and morphological properties. Experimental measurements and finite difference time domain (FDTD) simulations are combined to characterize temperature effects on the plasmonic properties of large arrays of Au nanostructures on glass substrates. Experiments show continuous blue shifts of extinction peaks for heating up to 210°C. Microscopy measurements reveal these peak shifts are due to morphological changes that shrink nanorods and increase nanogap distances. Simulations of the nanostructures before and after heating find good agreement with experiments. Results show that plasmonic properties are maintained after thermal processing, but peak shifts need to be considered for device design.
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来源期刊
International Journal of High Speed Electronics and Systems
International Journal of High Speed Electronics and Systems Engineering-Electrical and Electronic Engineering
CiteScore
0.60
自引率
0.00%
发文量
22
期刊介绍: Launched in 1990, the International Journal of High Speed Electronics and Systems (IJHSES) has served graduate students and those in R&D, managerial and marketing positions by giving state-of-the-art data, and the latest research trends. Its main charter is to promote engineering education by advancing interdisciplinary science between electronics and systems and to explore high speed technology in photonics and electronics. IJHSES, a quarterly journal, continues to feature a broad coverage of topics relating to high speed or high performance devices, circuits and systems.
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