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- W4308151102 endingPage "117410" @default.
- W4308151102 startingPage "117410" @default.
- W4308151102 abstract "Second-order phononic topological insulators (SPTIs) with topologically protected corner states offer unique routes for the realization of steering elastic waves in lower-dimension regime with robustness. However, prevailing SPTIs only host corner states within a single bandgap, restricting applications of SPTIs in multiband domain. Here, we design four new types of SPTIs with the customized dual-bandgap which supports dual-band corner states. The dual-bandgap is created by simultaneously maximizing the minimum imaginary parts of wave vectors at two desired frequencies via topology optimization. Topological trivial and nontrivial unit cells (UCs), sharing the dual-bandgap, are configured by selecting UCs from the same optimized phononic crystals (PCs) in different ways. The dual-band topological corner states are observed at the corner between the trivial and nontrivial regions. The developed four SPTIs with customized dual-band operating frequencies pave the way for multiband communications and manipulation of elastic waves with enhanced robustness." @default.
- W4308151102 created "2022-11-08" @default.
- W4308151102 creator A5003578886 @default.
- W4308151102 creator A5009460956 @default.
- W4308151102 creator A5037389374 @default.
- W4308151102 date "2023-02-01" @default.
- W4308151102 modified "2023-10-16" @default.
- W4308151102 title "Topology optimization of a second-order phononic topological insulator with dual-band corner states" @default.
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- W4308151102 doi "https://doi.org/10.1016/j.jsv.2022.117410" @default.
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