Localized surface plasmon resonance (LSPR) with a sharp field gradient and extremely strong field intensity is very attractive for near-field optical nano-tweezers manipulating tiny bio-objects with sizes ranging from sub-10 nm to micrometers. To lower the power consumption of optical trapping and improve the accessibility of LSPR for the targets, we propose and study a plasmonic bowtie notch design with assisted periodic curved grooves. By generating and coupling extra surface plasmon polariton waves into the LSPR, the presented design herein can significantly reduce the required power consumption in experiments for stably trapping single and multiple polystyrene spheres. We believe the idea and results presented in this paper would be helpful in realizing highly efficient nano-tweezers in the plasmonic circuit on-chip.

中文翻译：

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通过带有弯曲凹槽的银色等离子领结槽口实现高效的纳米镊子

具有尖锐场梯度和极强场强的局部表面等离子体激元共振（LSPR）对于处理尺寸从10纳米到微米的微小生物物体的近场光学纳米镊子非常有吸引力。为了降低光阱的功耗并提高LSPR对于目标的可及性，我们提出并研究了带有辅助周期性弯曲凹槽的等离激元领结缺口设计。通过生成额外的表面等离激元极化波并将其耦合到LSPR中，本文提出的设计可以显着减少稳定捕获单​​个和多个聚苯乙烯球体的实验中所需的功耗。我们相信本文提出的想法和结果将有助于在片上等离子体电路中实现高效的纳米镊子。