Engineering Fano-resonant hybrid metastructures with ultra-high sensing performances

Here the data related to our recent work that uses metasurfaces designed on metamaterials to excite Fano resonances and Rabi Split analogue modes for sensing.

In this repository the following data are available:

The Reflectance, Transmittance and Absorbance (1-T-R) evaluated over all the diffraction angles (from 0° to 89°) for the proposed structure (ring + cross) and the other tested structures, available in the .mat file.

The .m file to repeat all the simulations are available in main folder. The available Matlab codes allow reproducing numerical simulations using Reticolo (RCWA) as the main framework to do the computation.

Use "getrefractiveindex.m" to interpolate refractive index on finest wavelength range. Please, note that according to the uploaded codes this function have to be in the same folder of the loaded refractive indices. 

You can use the function "textprogressbar.m" to get a progress bar in real time to know the status of the current simulation. Please, note that this function have to stay in the "/RETICOLO V8/reticolo_allege" folder. 

One of the available Matlab code allows displaying the electric and magnetic field evaluated in the structure section or on the top view. 

The sensing test performed for the reported structures using different surrounding medium, for this purpose it is possible to use the codes that allow studying the parameters variation, the incident angle variation or just a single run changing the refractive index of the surrounding medium. 

The proposed code works using the Reticolo main code. To download it please visit the following link https://www.lp2n.institutoptique.fr/light-complex-nanostructures or using Zenodo https://zenodo.org/record/5905381#.Y8rvbC9abpA

Once Reticolo has been downloaded copy and paste its path in the proposed Matlab code for Fano resonances on ENZ cavities as reported in the example codes.

In this repository you will find the refractive indices that have been used.

本数据集对应我们近期一项研究工作，该研究通过在超材料（metamaterials）上设计的超表面（metasurfaces）激发法诺共振（Fano resonances）与拉比分裂类比模式（Rabi Split analogue modes），以实现传感应用。

本仓库可获取如下数据：
针对所提出的环形+十字形结构及其他受试结构，在0°至89°全衍射角范围内计算得到的反射率、透射率与吸光度（1-T-R），相关数据均存储于.mat格式文件中。
主文件夹中提供了可复现全部仿真流程的.m文件。所附Matlab代码以Reticolo（RCWA）作为核心计算框架，用于复现数值仿真结果。
可使用'getrefractiveindex.m'对精细波长范围内的折射率进行插值运算。请注意：根据上传的代码，该函数需与加载的折射率文件处于同一目录下。
可使用'textprogressbar.m'获取实时进度条，以便掌握当前仿真的运行状态。请注意：该函数需放置于'/RETICOLO V8/reticolo_allege'目录中。
其中一款所附Matlab代码可用于展示结构截面或俯视图中的电场与磁场分布。
针对所报道的结构开展了不同周围介质下的传感测试，可通过相关代码研究参数变化、入射角变化，或仅通过单次运行修改周围介质的折射率来完成测试。

本项目所使用的代码依赖Reticolo主程序。如需下载该程序，请访问以下链接：https://www.lp2n.institutoptique.fr/light-complex-nanostructures，或通过Zenodo平台获取：https://zenodo.org/record/5905381#.Y8rvbC9abpA。

下载Reticolo后，请将其路径复制粘贴至本仓库中针对ENZ（epsilon-near-zero）腔的法诺共振的Matlab代码中，具体可参考示例代码。

本仓库中还包含本次研究使用的折射率数据集。