Optimizing an electromagnetic wave absorber for bi-anisotropic metasurfaces based on toroidal modes

• Published in: Scientific reports Vol. 14; no. 1; pp. 8783 - 16
• Main Authors: Aghdasinia, Sina, Allahverdizadeh, Hossein, Afkari, Ehsan, Ahmadpour, Behrouz, Bemani, Mohammad
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 16.04.2024; Nature Publishing Group; Nature Portfolio
• Subjects: 639/166/987; 639/766; 639/766/1130; Charged particles; Chiral particle; Chirality; Electric fields; Electromagnetic radiation; Energy harvesting; Far-field WPT; Handedness; Humanities and Social Sciences; Magnetic fields; Metasurface; multidisciplinary; Polarization; R&D; Radiation; Rectenna; Research & development; Science; Science (multidisciplinary); Symmetry; Wireless Power Transfer; Chiral particle; Wireless Power Transfer; Metasurface; Far-field WPT; Energy harvesting; Rectenna
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-024-59503-8

The design and optimization of an electromagnetic wave absorber for far-field wireless power transmission (WPT) is the subject of this research study. The goal of the research is to effectively absorb energy from ambient RF electromagnetic waves without the usage of a ground plane by employing metasurfaces with chiral components.By integrating trioidal moments into the design theory, the objective is to create a metasurface that functions in two frequency bands and produces high-quality resonance. The study also explores the dual non-homogeneity property of structures, polarization tensor coefficients, and the electromagnetic response of non-homogeneous metasurfaces. Based on the relative orientation of induced fields and moments, it delves deeper into the two basic possibilities for dual non-homogeneous elements. The development of chiral metasurfaces and the notion of electromagnetic chirality and its implications for polarization properties are introduced.