Analysis of plasmon modes in Bi2Se3/graphene heterostructures via electron energy loss spectroscopy. [PDF]
Sci RepMoorsom T +7 more
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Programmable synthetic magnetism and chiral edge states in nano-optomechanical quantum Hall networks. [PDF]
Nat CommunSlim JJ, Del Pino J, Verhagen E.
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Coherent Electron-Phonon Coupling in Two-Dimensional Bi<sub>2</sub>Se<sub>3</sub> Nanoplatelets Studied with Ultrafast Spectroscopy. [PDF]
J Phys Chem C Nanomater InterfacesBaserga A +7 more
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Programmable Coding Acoustic Topological Insulator [PDF]
Advanced Materials, 2018 AbstractTopological acoustics has recently revolutionized fundamental concepts of acoustic propagation, giving rise to strikingly unique acoustic edge modes immune to backscattering. Despite the rapid progress in this field, simultaneous realization of reconfigurability, intelligentization, and automatic control over acoustic propagation paths is ...
Ding Jia, Jianping Xia
exaly +3 more sources
Observation of Dislocation-Induced Topological Modes in a Three-Dimensional Acoustic Topological Insulator [PDF]
Physical Review Letters, 2021 The interplay between real-space topological lattice defects and the reciprocal-space topology of energy bands can give rise to novel phenomena, such as one-dimensional topological modes bound to screw dislocations in three-dimensional topological insulators. We obtain direct experimental observations of dislocation-induced helical modes in an acoustic
Ding Jia, Yijun Guan, Haoran Xue
exaly +5 more sources
Acoustic higher-order topological insulator on a kagome lattice [PDF]
Nature Materials, 2018 15 pages, 4 ...
Fei Gao, Haoran Xue, Yidong Chong
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Realization of an Acoustic Third-Order Topological Insulator [PDF]
Physical Review Letters, 2019 The recent discovery of higher-order topological insulators (TIs) has opened new possibilities in the search for novel topological materials and metamaterials. Second-order TIs have been implemented in two-dimensional (2D) systems exhibiting topological 'corner states', as well as three-dimensional (3D) systems having one-dimensional (1D) topological ...
Fei Gao, Haoran Xue, Yidong Chong
exaly +5 more sources
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Acoustic Realization of Surface-Obstructed Topological Insulators
Physical Review Letters, 2022Recently, higher-order topological insulators have been attracting extensive interest. Unlike the conventional topological insulators that demand bulk gap closings at transition points, the higher-order band topology can be changed without bulk closure and exhibits as an obstruction of higher-dimensional boundary states.
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Topological acoustic tweezer and pseudo-spin states of acoustic topological insulators
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Creating acoustic topological insulators through topology optimization
Mechanical Systems and Signal Processing, 2021Abstract For the realization of topologically protected wave propagation, engineering artificial structures of topological insulators (TIs) inspired by quantum mechanics has attracted extensive attention over the last few years. However, the existing structures commonly compose of a regular shape of inclusions for the limited arrangements in the unit
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