Concepts de base
Non-reciprocal driving mechanism creates robust topological solitons in active metamaterials.
Résumé
The content discusses the introduction of a local driving mechanism for solitons that accelerates both solitons and antisolitons in the same direction through non-reciprocal driving. It explores the construction of an active mechanical metamaterial to achieve this, leading to the formation of non-reciprocal topological solitons known as non-Hermitian skin waves. These solitons are utilized in constructing an active waveguide for transmitting and filtering unidirectional information. The study also touches on the breaking of 'supersymmetry' in another class of metamaterials, causing only antisolitons to be driven. The interplay between non-reciprocity and topological solitons is highlighted, showcasing how solitons generate their driving force by locally straining the material. The implications extend beyond the study, suggesting potential applications in robotic locomotion, quantum mechanics, optics, and soft matter.
Stats
"existing driving mechanisms all accelerate solitons and antisolitons in opposite directions"
"construct an active mechanical metamaterial consisting of non-reciprocally coupled oscillators"
"nonlinearity coaxes non-reciprocal excitations—so-called non-Hermitian skin waves—into robust one-way (anti)solitons"
"breaking of ‘supersymmetry’ causing only antisolitons to be driven"