| Full text | |
| Author(s): |
Damasceno, Gabriel H. B.
;
Carvalho, William O. F.
;
Sodre, Arismar Cerqueira
;
Oliveira Jr, Osvaldo N.
;
Mejia-Salazar, Jorge Ricardo
Total Authors: 5
|
| Document type: | Journal article |
| Source: | ACS APPLIED MATERIALS & INTERFACES; v. N/A, p. 7-pg., 2023-01-23. |
| Abstract | |
On-chip wireless communications require optical nanoantennas with dynamically tunable radiation patterns, which may allow for higher integration with multiple nanoantennas instead of two fixed nanoantennas in existing approaches. In this paper, we introduce a concept to enable active manipulation of radiated beam steering using applied magnetic fields. The proposed system consists of a highly directive Yagi-Uda-like arrangement of magnetoplasmonic nanoribs made of Co6Ag94 and immersed in SiO2. Numerical demonstration of the tilting of the radiated beam from the nanoantenna on its plane is provided with full-wave electromagnetic simulations using the finite element method. The tilt direction of the radiated beam can be changed by reversing the magnetization direction, while the conventional plasmonic nanoantenna pattern is recovered by demagnetizing the system. The geometry of the nanoantenna can be tailored to work at optical or infrared wavelengths, but a proof of concept for lambda = 700 nm is conducted for taking advantage of the high magneto-optical activity of Co6Ag94. The design was based on experimental data for materials that can be fabricated via nanolithography, thus permitting magnetically on-chip reconfigurable optical wireless communications. (AU) | |
| FAPESP's process: | 22/14229-9 - Design and Development of Flexible Metasurfaces for Biosensing and Telecommunications Applications |
| Grantee: | Osvaldo Novais de Oliveira Junior |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - Brazil |
| FAPESP's process: | 18/22214-6 - Towards a convergence of technologies: from sensing and biosensing to information visualization and machine learning for data analysis in clinical diagnosis |
| Grantee: | Osvaldo Novais de Oliveira Junior |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 21/06946-0 - Reconfigurable intelligent surface aided communications for 6G and beyond |
| Grantee: | Rausley Adriano Amaral de Souza |
| Support Opportunities: | Regular Research Grants |