FDTD simulation of 320 nm thickness PAAO with Ag NPs in different mediums (AoI 45 deg., s- and p-polarizations)

Version 2 has the same files as version 1 plus images representing data. FDTD software: Lumerical (Ansys, version 2021 R2.3). Structure: aluminum (Palik) substrate; 320 nm thickness (<em>h</em>) aluminum oxide (Palik) layer with 35 nm diameter (<em>RPo</em>) cylindrical pores with 100 nm distance (<em>D</em>) between the pore centers (representing porous anodized aluminum oxide - PAAO); 60 nm diameter (<em>AgRNP</em>) silver (Palik) nanoparticles (Ag NPs) placed directly above each pore. Refractive index of the surrounding medium (<em>n</em>): 1.0; 1.1; 1.2; 1.3. Simulation region: from 300 nm below the substrate/PAAO interface to 1.3 µm above PAAO surface; x and y spans are equal to one period of the structure. Mesh override region: from 50 nm below the PAAO to 50 nm above the nanoparticles; 2 nm step size in each direction. Light source: BFAST plane wave light source; 500 nm above PAAO; 45° angle of incidence (<em>ang</em>); 300 nm – 1000 nm wavelength range; s- and p-polarizations (<em>pol</em>). Monitors (frequency domain field and power): (1) 2D Z-normal; 1 µm above PAAO; results are in "<em>_reflection.txt</em>" files. (2) 2D Y-normal; centered to the structure; starts 50 nm below PAAO and ends 50 nm above nanoparticles; results are in "<em>.fsp</em>" files. (3) 2D X-normal; centered to the structure; starts 50 nm below PAAO and ends 50 nm above nanoparticles; results are in "<em>.fsp</em>" files. Information in the file name: <em>h</em> - thickness of PAAO; <em>pol</em> - polarization; <em>AgRNP</em> - diameter of silver nanoparticles; <em>RPo</em> - diameter of pores; <em>D</em> - distance between pore centers; <em>ang</em> - angle of incidence; <em>n</em> - refractive index of surrounding medium. Files: (1) "<em>_reflection.txt</em>" - lambda(nm) (first column) - wavelength in nanometers; Y (second column) - T data from the monitor above the structure. (2) "<em>_p0.log</em>" - log file produced by the software while running the simulation. (3) "<em>.fsp</em>" - Lumerical software file containing the simulation project; it can be used to extract data from Y- and X-normal monitors (license required to open these files). (4) "<em>Lumerical_Screenshots.pdf</em>" - shows software screenshots for every object and its every property; red text is added to show which values are different for different simulations. (5) "<em>Structure_Illustration.png</em>" - a schematic of modeled structure. (6) "<em>h320_Spol.jpg</em>" and "<em>h320_Ppol.jpg</em>" - a preview of data from "<em>_reflection.txt</em>" files.