National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.
Nanoscale. 2011 Oct 5;3(10):4290-5. doi: 10.1039/c1nr10825e. Epub 2011 Sep 13.
In this study, we detail the coherent Stokes scattering from gold nanorods in ensemble and single particle measurements. An increase of more than an order of magnitude was observed in the surface plasmon resonance enhancement of coherent Stokes scattering by gold nanorods for small changes in nanorod dimensions. The impact of this dimensional change is, in general, smaller when probed by single color linear and non-linear techniques. We find that the size sensitivity and associated wavelength dependence of the enhanced coherent Stokes scattering from individual gold nanorods is consistent with predictions based on local surface plasmon resonances found from exact solutions obtained using boundary element methods.
在这项研究中，我们详细描述了金纳米棒在集合和单粒子测量中的相干斯托克斯散射。我们观察到，金纳米棒的表面等离子体共振增强的相干斯托克斯散射在纳米棒尺寸的微小变化下增加了一个数量级以上。当用单颜色线性和非线性技术探测时，这种尺寸变化的影响通常较小。我们发现，单个金纳米棒的增强相干斯托克斯散射的尺寸灵敏度和相关的波长依赖性与基于边界元方法获得的精确解中发现的局部表面等离子体共振的预测一致。
