论文标题
介意理论与实验之间的差距
Mind the gap between theory and experiment
论文作者
论文摘要
我们讨论了一些示例，其中基于有效制造的纳米结构的数值模拟可以为实验提供更多见解。为了关注等离子间，我们研究了用于光学诱捕的FANO谐振系统，用于近场增强的逼真的偶极天线以及将等离子金属与电介质折射率感测相结合的混合纳米结构。对于这些系统，相同的实验细节可以发挥截然不同的作用，具体取决于可观察的物理类型。例如，粗糙度可以显着影响近场，但在远场中完全没有注意到。它可以影响吸附在表面上的分子，而折射率感应可以完全免疫这种粗糙度。尽可能接近实验情况无疑是一项艰巨的任务，我们根据SEM图像为此展示了一种简单的方法。总的来说，弥合理论与实验之间的差距并不是一项琐碎的任务。但是，本章中说明的一些简单步骤可以帮助构建与实验更匹配的数值模型。
We discuss some examples where numerical simulations based on effectively fabricated nanostructures can provide additional insights into an experiment. Focusing on plasmonics, we study Fano resonant systems for optical trapping, realistic dipole antennas for near-field enhancement, and hybrid nanostructures that combine plasmonic metals with dielectrics refractive index sensing. For those systems, the same experimental detail can play a very different role, depending on the type of physical observable. For example, roughness can significantly influence the near-field, but be totally unnoticed in the far-field. It can affect molecules adsorbed on the surface, while refractive index sensing can be fully immune to such roughness. Approaching the experimental situation as closely as possible is certainly a challenging task and we demonstrate a simple approach based on SEM images for that. Altogether, bridging the gap between theory and experiment is not such a trivial task. However, some of the simple steps illustrated in this chapter can help build numerical models that match the experiment better.
