& Wu, Y. Tunable topological phononic crystals. Phys. Rev. Appl. 5, 054021 (2016).Z.-G. Chen and Y. Wu, Tunable Topological Phononic Crystals. Phys. Rev. Appl. 5, 054021 (2016).Chen, Z. G. & Wu, Y. Tunable Topological Phononic Crystals. Phys. Rev. Applied 5, 054021 (2016)....
Strategically combining four structured domains creates the first ever three-way topological energy-splitter; remarkably, this is only possible using a square, or rectangular, lattice, and not the graphene-like structures more commonly used in valleytron
rather than by their intrinsic mechanical properties1. These are, typically, artificial structures of periodic, identical units with feature dimensions within the order of magnitude of the operational wavelength, where phononic crystals are a prime example2. Within the last 20...
Due to the usually fixed geometry and constituents of topological insulators after the fabrication, some effective strategies to deal with this challenge are necessarily taken into account. Here, we take inspiration from the band gap tunability of phononic crystals, in which the frequency range of ba...
Topological phononic crystalsThe remarkable properties of topological insulators have inspired numerous studies on topological transport for bulk waves, but the demonstrations of topological edge states with tunable frequency are few attempts. Here, we report on the active frequency tunability of ...
Valley Hall topological insulators (VHTIs) in condensed matter physics have been recently extended to acoustic systems and have attracted great attention. However, the current acoustic topological insulators (ATIs) are mainly based on the mechanism of Bragg scattering in phononic crystals. Their ...
The metamaterial paradigm has allowed an unprecedented space-time control of various physical fields, including elastic and acoustic waves. Despite the wide variety of metamaterial configurations proposed so far, most of the existing solutions display a
Lee, T. G.et al.Enhanced energy transfer and conversion for high performance phononic crystal-assisted elastic wave energy harvesting.Nano Energy78, 105226 (2020). ArticleCASGoogle Scholar Lee, T. & Iizuka, H. Bragg scattering based acoustic topological transition controlled by local resonance.Phys...
Valley Hall topological insulators (VHTIs) in condensed matter physics have been recently extended to acoustic systems and have attracted great attention. However, the current acoustic topological insulators (ATIs) are mainly based on the mechanism of Bragg scattering in phononic crystals. Their ...
The pioneer devices of unidirectional/asymmetric acoustic transmission were achieved by utilizing nonlinearity8,9,10,11,12. Based on the frequency conversion induced by nonlinear mediums and the filter effect of bandgap phononic crystals, the acoustic time-reversal symmetry is broken, resulting in nonre...