Zobrazeno 1 - 10
of 316
pro vyhledávání: '"Sievenpiper, Daniel"'
In this study, we investigate a one-dimensional (1D) unidirectional phononic waveguide embedded within a three-dimensional (3D) hexagonal close-packed phononic crystal, achieved by the introduction of a screw dislocation. This approach does not rely
Externí odkaz:
http://arxiv.org/abs/2404.18347
A varactor-based reconfigurable multifunctional metasurface capable of simultaneous beam steering, polarization conversion and phase offset is proposed in this paper. The unit cell is designed to naturally decompose the incident waves into two equal
Externí odkaz:
http://arxiv.org/abs/2308.02511
Manipulating the electromagnetic (EM) reflection behavior from an arbitrary surface dynamically on arbitrary design goals is an ultimate ambition for many EM stealth and communication problems, yet it is nearly impossible to accomplish with conventio
Externí odkaz:
http://arxiv.org/abs/2305.11899
Breaking reciprocity in the microwave frequency range will have important implications for modern electronic systems. Since it usually involves bulky biasing magnets or complex spatial-temporal modulations, exploring a lightweight, all-passive approa
Externí odkaz:
http://arxiv.org/abs/2305.02207
Metasurfaces provide unique capability in guiding surface waves and controlling their polarization and dispersion properties. One way to do that is by analyzing their equifrequency contours. Equifrequency contours are the 2D projection of the 3D disp
Externí odkaz:
http://arxiv.org/abs/2210.08999
Nonreciprocal transport of electromagnetic waves within magnetized plasma is a powerful building block towards understanding and exploiting the properties of more general topological systems. Much recent attention has been paid to the theoretical iss
Externí odkaz:
http://arxiv.org/abs/2206.12507
Symmetry indicators are a modern tool for characterizing topological phases that require only minimal computational expense but provide an elegant means of designing practical devices. This paper demonstrates how a rotational symmetry indicator can b
Externí odkaz:
http://arxiv.org/abs/2201.05907
Autor:
Davis, Robert J., Zhou, Yun, Bisharat, Dia'aaldin J., Bandaru, Prabhakar R., Sievenpiper, Daniel F.
We describe the possibility for topologically robust edge states existing on interfaces of triangular lattices which are supported by rotational symmetries that are sensitive to boundary conditions. Such states are trivial from the perspective of Ber
Externí odkaz:
http://arxiv.org/abs/2201.03495
Autor:
Zhou, Yun, Zhang, Naiqing, Bisharat, Dia'aaldin J., Davis, Robert J., Zhang, Zichen, Friend, James, Bandaru, Prabhakar R., Sievenpiper, Daniel F.
The latest advances in topological physics have yielded a rich toolset to design highly robust wave transfer systems, for overcoming issues like beam steering and lateral diffraction in surface acoustic waves (SAWs). However, presently used designs f
Externí odkaz:
http://arxiv.org/abs/2111.12249
A metallic ring based, diode-integrated, low-profile, power-dependent, reflective metasurface working from 3 GHz to 3.6 GHz is proposed in this letter. Unlike the previous study which shifts a band up and down to change the impedance of the surface,
Externí odkaz:
http://arxiv.org/abs/2111.04502