Abstract
All-dielectric nanophotonics lies at a forefront of nanoscience and technology as it allows to control light at the nanoscale using its electric and magnetic components. Bulk silicon does not experience any magnetic response, nevertheless, we demonstrate that the metasurface made of silicon parallelepipeds allows to excite the magnetic dipole moment leading to the broadening and enhancement of the absorption. Our investigations are underpinned by the numerical predictions and the experimental verifications. Also surprisingly we found that the resonant electric quadrupole moment leads to the enhancement of reflection. Our results can be applied for a development of absorption based devices from miniature dielectric absorbers, filters to solar cells and energy harvesting devices.
Highlights
Absorbing and accumulating energy from light could enable smart sensors to work indefinitely
Here we proposed the nano-scale metasurface for energy harvesting applications
We demonstrated that despite having no magnetic response as a bulk, the patterned silicon metasurface experiences magnetic response leading to the enhancement and broadening of the absorption
Summary
Absorbing and accumulating energy from light could enable smart sensors to work indefinitely. The optical properties of dielectric metamaterials have been attracting significant attention in recent years mainly because of their possibility to support the excitation of both electric and magnetic multipole resonances[12,13,14,15,16,17,18,19]. Owing to this effect, all-dielectric metasurfaces are widely used for the controllable light manipulation, to control phase[20,21], polarization[22,23,24] and transmission[25,26,27]. Our multipole decomposition approach, we use the electric dipole (ED) moment p, the magmoment m, the electric quadrupole (EQ) moment Q, the magnetic quadrupole (MQ) moment
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
