Swiss Federal Institute of Technology Lausanne (EPFL), Nanophotonics and Metrology Laboratory, Lausanne, Switzerland.
Nano Lett. 2011 Feb 9;11(2):482-7. doi: 10.1021/nl1032588. Epub 2011 Jan 4.
The enhancement of excitation and reemission of molecules in close proximity to plasmonic nanostructures is studied with special focus on the comparison between idealized and realistically shaped nanostructures. Numerical experiments show that for certain applications choosing a realistic geometry closely resembling the actual nanostructure is imperative, an idealized simulation geometry yielding significantly different results. Finally, a link between excitation and reemission processes is formed via the theory of optical reciprocity, allowing a transparent view of the electromagnetic processes involved in plasmon-enhanced fluorescence and Raman-scattering.
研究了与等离子体纳米结构近距离的分子激发和再发射的增强，特别关注理想和现实形状的纳米结构之间的比较。数值实验表明，对于某些应用，选择与实际纳米结构非常相似的实际几何形状是至关重要的，而理想化的模拟几何形状会产生显著不同的结果。最后，通过光的互易性理论形成了激发和再发射过程之间的联系，使人们可以清晰地了解等离子体增强荧光和拉曼散射中涉及的电磁过程。
