Results 151 to 160 of about 130,971 (229)
Toroidal Dipole‐Dominated High‐Performance Optical Sensors via Nanoimprinted Tetramer Architectures
We developed a scalable low‐cost nanoimprinted tetramer architecture (NTA) sensor using two‐step nanoimprint lithography. It comprises polystyrene nanopillar tetramer arrays on a PS waveguide and gold mirror, supporting a toroidal‐dipole‐mediated resonant mode at 810 nm with a simulated Q of 3124.
Hongsen Zhao +8 more
wiley +1 more source
Programmable calculus operations in electromagnetic space using space-time-coding metasurface. [PDF]
Shi HT +9 more
europepmc +1 more source
Conversion of Spin‐Orbit‐Coupled Optical Vortices via Complex Coupling
A four‐step Floquet protocol in a straight terahertz waveguide array uses metallic separators to selectively control interwaveguide coupling. The resulting angular‐momentum‐dependent coupling enables Floquet engineering of OAM states, giving rise to corner states, conversion between opposite total‐angular‐momentum states, and edge states.
Jinze Gao +3 more
wiley +1 more source
Multifunctional Flipping-Based Mechanical Metasurface Enabling Optical-Microwave Dual-Modal Reconfigurability. [PDF]
Huang S +8 more
europepmc +1 more source
Arbitrary Wavefront Manipulation in Real Space and Momentum Space Based on Elliptical Structures
Leveraging elliptical structures—while preserving real space arbitrary wavefront manipulation—we generalize the manipulation to momentum space rather than only sustaining topological singularities. Multifunctional integrated outputs, such as beam deflection and focusing, can be flexibly achieved in the near–infrared communication band, and the ...
Siqi Chang +4 more
wiley +1 more source
Programmable radio-frequency calculations in electromagnetic-wave domain. [PDF]
Chen SN +11 more
europepmc +1 more source
A deep reinforcement‐learning framework designs dielectric metasurfaces supporting dual quasi‐BIC resonances under tightly coupled multi‐objective constraints. By combining D3QN, rollout‐based lookahead, reward normalization, and prioritized replay, the method stabilizes the optimization of the resonance wavelength, quality factor, and near‐field ...
Ruixin Luo +8 more
wiley +1 more source
All-optical control of nonlinear emission from resonant metasurfaces. [PDF]
Yang Z +13 more
europepmc +1 more source
Reprogrammable Bistable Metasurface for Arbitrary Electromagnetic Wave Manipulation. [PDF]
Han D +8 more
europepmc +1 more source
To address the trade‐off between depth discriminability and texture preservation in PSF‐engineered imaging, a polarization‐multiplexed metalens is developed to decouple depth estimation from extended‐depth‐of‐field texture acquisition. The DH‐derived depth guides depth‐matched Airy PSF selection for non‐blind texture recovery, while computational ...
Xinyi Tian +12 more
wiley +1 more source

