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Design, fabrication and characterization of metasurfaces for diffractive optics applications

Grant number: 15/21455-1
Support Opportunities:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): March 01, 2016
Effective date (End): February 28, 2021
Field of knowledge:Engineering - Electrical Engineering - Telecommunications
Principal Investigator:Ben-Hur Viana Borges
Grantee:Augusto Martins
Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated scholarship(s):18/25372-1 - Design, fabrication and characterization of aberration-free metalenses for integrated optics applications, BE.EP.DD


The goal of this PhD research proposal is to design, model, fabricate, and characterize metamaterials (in their state-of-the-art) capable of controlling the propagation of light beams with low insertion losses for diffractive optics applications, particularly binary phase holograms. More specifically, this research will focus on plasmonic diffractive optics for the design of distributed nano antennas forming a so called metasurface. These structures are capable of modulating the phase and amplitude of light in a much more efficient way than regular diffractive optics elements do. It will also be investigated strategies to mitigate truncation (finite-size) effects in the response of these elements, establish the ideal dimensions of the sub-masks, and optimize the geometry of the transition region from +p to a -p sub-matrix to mitigate undesired diffractive effects. Additionally, once obtaining low insertion losses is crucial (because metamaterials tend to produce high insertion losses, particularly when operating in the negative refraction regime), it will be investigated different substrates and appropriate configurations for the nano inclusions aiming at mitigating these losses. The metals adopted for the metasurfaces are silver and aluminum, due to their compatibility with CMOS processes. However, it is expected the metal type to influence the performance of the nano antennas. Therefore, the procedure adopted for the nano antennas' experimental characterization will be established in such a way as assess the performance of the metasurfaces. It will also be designed e fabricated metasurfaces (to be used an benchmarks) using conventional modeling techniques. The theoretical and experimental results obtained in this stage will be used for performance comparison with the optimized structures (free from unwanted diffractions). By exploring added degrees of freedom, this approach has great potential for producing high scientific impact results with new optimized designs for periodic metamaterials, with higher bandwidth and lower insertion losses. This will be achieved by means of electromagnetic simulations assisted with optimization tools aiming always at obtaining different optical functionalities with the proposed structures, such as a stringent frequency selectivity and optimized transmission patterns. Finally, it is expected that the present research demonstrates both theoretically and experimentally new concepts for binary phase holography based on the proposed metasurfaces. Additionally, the approach here proposed has great potential for applications in sensing and optical interconnects. (AU)

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Scientific publications (10)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DA MOTA, ACHILES F.; MARTINS, AUGUSTO; PEPINO, VINICIUS; OTTEVAERE, HEIDI; MEULEBROECK, WENDY; TEIXEIRA, FERNANDO L.; BORGES, V, BEN-HUR. Semianalytical modeling of arbitrarily distributed quantum emitters embedded in nanopatterned hyperbolic metamaterials. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, v. 36, n. 5, p. 1273-1287, . (15/21455-1, 13/07276-1, 15/50268-5, 18/11388-3)
MARTINS, AUGUSTO; LI, JUNTAO; DA MOTA, ACHILES F.; PEPINO, VINICIUS M.; WANG, YIN; NETO, LUIZ G.; TEIXEIRA, FERNANDO L.; MARTINS, EMILIANO R.; BORGES, BEN-HUR V.. Broadband c-Si metasurfaces with polarization control at visible wavelengths: applications to 3D stereoscopic holography. Optics Express, v. 26, n. 23, p. 30740-30752, . (16/05809-0, 13/07276-1, 15/21455-1, 15/50268-5)
DA MOTA, ACHILES F.; MARTINS, AUGUSTO; WEINER, JOHN; COURTEILLE, PHILIPPE; MARTINS, EMILIANO R.; BORGES, V, BEN-HUR. Design and analysis of nanopatterned graphene-based structures for trapping applications. Physical Review B, v. 102, n. 8, . (15/21455-1, 13/07276-1)
MARTINS, AUGUSTO; ABASS, AIMI; BORGES, V, BEN-HUR; MARTINS, EMILIANO R.. Band shaping and emission control via waveguide plasmon polaritons. Physical Review B, v. 103, n. 20, . (15/21455-1, 20/00619-4, 13/07276-1)
MARTINS, AUGUSTO; LI, KEZHENG; LI, JUNTAO; LIANG, HAOWEN; CONTEDUCA, DONATO; BORGES, BEN-HUR V.; KRAUSS, THOMAS F.; MARTINS, EMILIANO R.. On Metalenses with Arbitrarily Wide Field of View. ACS PHOTONICS, v. 7, n. 8, p. 2073-2079, . (20/00619-4, 13/07276-1, 18/25372-1, 15/21455-1)
LIANG, HAOWEN; MARTINS, AUGUSTO; BORGES, BEN-HUR V.; ZHOU, JIANYING; MARTINS, EMILIANO R.; LI, JUNTAO; KRAUSS, THOMAS F.. High performance metalenses: numerical aperture, aberrations, chromaticity, and trade-offs. OPTICA, v. 6, n. 12, p. 1461-1470, . (16/05809-0, 15/21455-1, 18/25372-1)
LI, KEZHENG; HAQUE, SIRAZUL; MARTINS, AUGUSTO; FORTUNATO, ELVIRA; MARTINS, RODRIGO; MENDES, MANUEL J.; SCHUSTER, CHRISTIAN S.. Light trapping in solar cells: simple design rules to maximize absorption. OPTICA, v. 7, n. 10, p. 1377-1384, . (15/21455-1)
ARRUDA, GUILHERME S.; LI, JUNTAO; MARTINS, AUGUSTO; LI, KEZHENG; KRAUSS, THOMAS F.; MARTINS, EMILIANO R.. Reducing the Surface Area of Black Silicon by Optically Equivalent Structures. IEEE JOURNAL OF PHOTOVOLTAICS, v. 10, n. 1, p. 41-45, . (15/21455-1, 16/05809-0)
MARTINS, AUGUSTO; LI, JUNTAO; DA MOTA, ACHILES F.; WANG, YIN; NETO, LUIZ G.; DO CARMO, JOAO P.; TEIXEIRA, FERNANDO L.; MARTINS, EMILIANO R.; BORGES, BEN-HUR V.. Highly efficient holograms based on c-Si metasurfaces in the visible range. Optics Express, v. 26, n. 8, p. 9573-9583, . (15/50268-5, 13/07276-1, 16/05809-0, 15/21455-1)
MARTINS, AUGUSTO; BORGES, BEN-HUR VIANA; LI, JUNTAO; KRAUSS, THOMAS F.; MARTINS, EMILIANO R.. Photonic Intermediate Structures for Perovskite/c-Silicon Four Terminal Tandem Solar Cells. IEEE JOURNAL OF PHOTOVOLTAICS, v. 7, n. 5, p. 1190-1196, . (16/05809-0, 15/21455-1)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
MARTINS, Augusto. Metasurfaces for control of light propagation and diffractive optics applications. 2021. Doctoral Thesis - Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD) São Carlos.

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