Noble-metal nanoparticles and short pulses for nanomanipulations: theoretical analysis
Noble-metal nanoparticles and short pulses for nanomanipulations: theoretical analysis
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DOI：
10.1364/josab.29.001383
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发表时间：
2012-06-01
影响因子：
1.9
通讯作者：
Yelin, Dvir
中科院分区：
文献类型：
--
作者：
Bisker, Gili;Yelin, Dvir
短激光脉冲和贵金属纳米粒子之间的共振相互作用产生的快速温度变化和近场增强可用于纳米尺度上物质的精确操纵。在这里，我们对各种实验参数的相对影响进行了理论研究，包括脉冲持续时间、辐照度和波长，以及粒子的物质、尺寸和形状。我们证明，使用分别由短于 70 fs 和 90 fs 的激光脉冲照射的 50 nm 金纳米球和银纳米球，粒子与其附近周围环境之间的空间受限的局部纳米相互作用是可行的，并且没有粒子熔化和最小的附带损害。这项工作的结果可能对各个领域的研究人员有用，他们的目标是在尽可能小的尺度上以高特异性和准确性操纵物质。 (C) 2012年美国光学学会
The rapid temperature change and the near-field enhancement resulting from resonant interactions between short laser pulses and noble-metal nanoparticles could be utilized for precise manipulations of matter on a nanometric scale. Here, we present a theoretical study of the relative effects of various experimental parameters, including pulse duration, irradiance, and wavelength, and a particle's substance, size, and shape. We show that spatially confined, local nanometric interactions between a particle and its near surroundings are feasible using 50 nm gold and silver nanospheres illuminated by laser pulses shorter than 70 fs and 90 fs, respectively, with no particle melting and minimal collateral damage. The results of this work could be useful for researchers in various fields, who aim at manipulating matter on the smallest possible scales, with high specificity and accuracy. (C) 2012 Optical Society of America