## 5 Conclusions  
This paper proposed a three-layer MMA for visible optical wavelength application. The predicted design evaluation and geometrical characteristics have been studied to achieve near-unity absorbance. The PCR value demonstrates that the proposed design absorbs relatively more than a polarization converter. TE mode and TM mode absorbance calculations are shown simultaneously, exhibiting equal absorbance and increasing the acceptance of the suggested MMA. The proposed MMA demonstrated an average absorbance of 91.82% from a wavelength of 450 nm to 650 nm, where the maximum absorptivity of 99.99% and the smallest size of 800 nm \(\times\) 800 nm \(\times\) 175 nm compared with the reference paper. There is no polarization sensitivity in either the TE or TM modes or the width oblique incident angle stability of 60\({}^{\circ}\). The MMA is also demonstrated by 18\({}^{\circ}\) bending effects in both methods. Comparing the proposed MMA's unique features with those of existing MMAs shows the advantages of the new MMA over the old. CST and HFSS simulation software have done the proposed MMA validation, the results of which match each other. Finally, the proposed MMA has an attractive solution for visible optical wavelength applications. Moreover, the study may also serve as a guide for future ATW research.  
M.Z.B.C. and I.H.: Conceptualization, data curation, formal analysis, investigation, methodology, and writing--original draft. M.T.I.: Funding acquisition, project administration; resources; software; supervision. A.H.: Conceptualization, data curation, methodology, writing--review and editing. A.S.A.: Funding acquisition, investigation, validation, writing--review and editing. A.A.: Data curation, methodology, visualization. H.A. and B.M.A.: Data curation, visualization, writing--review and editing. M.S.: Conceptualization, data curation, validation, and writing--review and editing. All authors have read and agreed to the published version of the manuscript.  
This research has been funded by the Deanship of Scientific Research at the University of Ha'il, Saudi Arabia through project number RG-22001.  
Not applicable.  
Data Availability Statement: Data already plotted in the manuscript in different figures.  
The authors declare no conflict of interest.  
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline
**Ref.** & **Material** & **Size (nm)** & **Absorbance** & **Peak** & **Operation** & **BW** & **Polarization** & **Incident Angle** \\  & & & **(Above)** & **Absorbance** & **Range (nm)** & **(nm)** & **Independence** & **Stability** \\ \hline
[23] & Tungsten, & & & & & & & & \\ SiO\({}_{2}\) & 1000 \(\times\) 1000 \(\times\) 225 & 91.24\% & 99.99\% & 350–700 & 308 & Yes & 60\({}^{\circ}\) \\
[25] & Au, Si & 500 \(\times\) 500 \(\times\) 600 & 80\% & 98.5\% & 474–784 & 310 & Yes & 60\({}^{\circ}\) \\
[26] & Ni, Si & 250 \(\times\) 250 \(\times\) 355 & 90\% & 99\% & 400–700 & 300 & Yes & 60\({}^{\circ}\) \\
[34] & Tungsten, & & & & & & & \\ SiO\({}_{2}\) & 200 \(\times\) 200 \(\times\) 206.59 & 80\% & 98\% & 350–1200 & 850 & Yes & 45\({}^{\circ}\) \\
[36] & Ag, SiO\({}_{2}\) & 120 \(\times\) 120 \(\times\) 60 & 70\% & 92\% & 430–750 & 320 & Yes & 40\({}^{\circ}\) \\
[37] & Tungsten, & & & & & & & \\ Quartz & **800 \(\times\) 800 \(\times\) 175** & **91.82\%** & **99.99\%** & **450–650** & **200** & Yes & **70\({}^{\circ}\)** \\ \hline \hline \end{tabular}
\end{table}
Table 2: Comparison table.