Zobrazeno 1 - 10
of 333
pro vyhledávání: '"Craster, Richard V."'
In this work, we present a comprehensive method for determining the dispersion relation in one-dimensional waveguides, applicable to a wide range of structures, regardless of their specific characteristics. This general framework employs a unified ma
Externí odkaz:
http://arxiv.org/abs/2410.04549
This work reports the conditions under which weak scattering assumptions can be applied in a beam loaded by multiple resonators supporting both longitudinal and flexural waves. The work derives the equations of motion of a one-dimensional elastic wav
Externí odkaz:
http://arxiv.org/abs/2410.00188
Autor:
Vial, Benjamin, Sabaté, Marc Martí, Wiltshaw, Richard, Guenneau, Sébastien, Craster, Richard V.
Elastic wave manipulation using large arrays of resonators is driving the need for advanced simulation and optimization methods. To address this we introduce and explore a robust framework for wave control: Quasi-normal modes (QNMs). Specifically we
Externí odkaz:
http://arxiv.org/abs/2407.12042
Autor:
De Ponti, Jacopo M., Zhao, Xuanyi, Iorio, Luca, Maggioli, Tommaso, Colangelo, Marco, Davaji, Benyamin, Ardito, Raffaele, Craster, Richard V., Cassella, Cristian
A variety of scientific fields like proteomics and spintronics have created a new demand for on-chip devices capable of sensing parameters localized within a few tens of micrometers. Nano and microelectromechanical systems (NEMS/MEMS) are extensively
Externí odkaz:
http://arxiv.org/abs/2406.15903
We illuminate the fundamental mechanism responsible for the transition between the non-Hermitian skin effect and defect-induced localization in the bulk. We study a Hamiltonian with non-reciprocal couplings that exhibits the skin effect (the localiza
Externí odkaz:
http://arxiv.org/abs/2403.12546
Open cavities are often an essential component in the design of ultra-thin subwavelength metasurfaces and a typical requirement is that cavities have precise, often low frequency, resonances whilst simultaneously being physically compact. To aid this
Externí odkaz:
http://arxiv.org/abs/2401.06136
Laminated media with material properties modulated in space and time in the form of travelling waves have long been known to exhibit non-reciprocity. However, when using the method of low frequency homogenisation, it was so far only possible to obtai
Externí odkaz:
http://arxiv.org/abs/2311.10096
Publikováno v:
J. Acoust. Soc. Am. 155 (2024) 629-639
In non-destructive evaluation guided wave inspections, the elastic structure to be inspected is often embedded within other elastic media and the ensuing leaky waves are complex and non-trivial to compute; we consider the canonical example of an elas
Externí odkaz:
http://arxiv.org/abs/2306.10064
The rainbow trapping phenomenon of graded metamaterials can be combined with the fractal spectra of quasiperiodic waveguides to give a metamaterial that performs fractal rainbow trapping. This is achieved through a graded cut-and-project algorithm th
Externí odkaz:
http://arxiv.org/abs/2305.10520
Understanding the generation of mechanical stress in drying, particle-laden films is important for a wide range of industrial processes. The cantilever experiment allows the stress in a drying film that has been deposited onto a thin plate to be quan
Externí odkaz:
http://arxiv.org/abs/2210.17229