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Design of High-Q Passband Filters Implemented Through Multipolar All-Dielectric Metasurfaces
Alessio Monti, Andrea Alù, Alessandro Toscano +1
We propose a novel class of ultrathin high Q passband filters designed by properly combining different multipolar resonances sustained by an all dielectric metasurface. A rigorous…
Diffusive Topological Transport in Spatiotemporal Thermal Lattices
Guoqiang Xu, Yihao Yang, Xue Zhou +3
Topological insulating phases are usually found in periodic lattices stemming from collective resonant effects, and it may thus be expected that similar features may be prohibited…
Scalable Metagrating for Efficient Ultrasonic Focusing
Yan Kei Chiang, Li Quan, Yugui Peng +4
Acoustic focusing plays a pivotal role in a wide variety of applications ranging from medical science to nondestructive testing. Previous works have shown that acoustic metagrating…
Radio-Transparent Dipole Antenna Based on a Metasurface Cloak
Jason Soric, Younes Ra'di, Diego Farfan +1
Antenna technology is at the basis of ubiquitous wireless communication systems and sensors. Radiation is typically sustained by conduction currents flowing around resonant metalli…
Reciprocity of thermal diffusion in time-modulated systems
Jiaxin Li, Ying Li, Pei-Chao Cao +6
The reciprocity principle governs the symmetry in transmission of electromagnetic and acoustic waves, as well as the diffusion of heat between two points in space, with important c…
Experimental Observation of Efficient Nonreciprocal Mode Transitions via Spatiotemporally-Modulated Acoustic Metamaterials
Zhaoxian Chen, Yugui Peng, Haoxiang Li +7
In lossless acoustic systems, mode transitions are always time-reversible, consistent with Lorentz reciprocity, giving rise to symmetric sound manipulation in space-time. To overco…
Boundary-Induced Embedded Eigenstate in a Single Resonator for Advanced Sensing
Rasmus E. Jacobsen, Alex Krasnok, Samel Arslanagic +2
Electromagnetic embedded eigenstates, also known as bound states in the continuum (BICs), hold a great potential for applications in sensing, lasing, enhanced nonlinearities and en…
Phase-Induced Frequency Conversion and Doppler Effect with Time-Modulated Metasurfaces
Davide Ramaccia, Dimitrios L. Sounas, Andrea Alu' +2
Metasurfaces consisting of electrically thin and densely packed planar arrays of subwavelength elements enable an unprecedented control of the impinging electromagnetic fields. Spa…