Anisotropic elastic properties of chiral sculptured thin films at micro-scale evaluated by resonance frequency spectra

Fang, Hui; Matsumoto, Kimihisa; Sumigawa, Takashi; Kitamura, Takayuki

doi:10.1016/j.euromechsol.2014.09.011

Cited by 2 publications

(1 citation statement)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A schematic is provided in figure 1 . CTSCMs have been fabricated for optics [ 35 – 37 ] and nanomechanics [ 38 , 39 ] using physical vapour evaporation, but the length scales have to be much larger for commonplace mechanics applications. Piecewise-homogeneous counterparts of CTSCMs [ 40 ] occur in nature as mechanically hard but resilient structures [ 41 – 43 ] and have also been fabricated for acoustic applications at 350 kHz frequency [ 44 ].…”

Section: Introductionmentioning

confidence: 99%

Multiple Rayleigh waves guided by the planar surface of a continuously twisted structurally chiral material

Mackay

Lakhtakia

2020

Proc. R. Soc. A.

View full text Add to dashboard Cite

The Stroh formalism was adapted for Rayleigh-wave propagation guided by the planar traction-free surface of a continuously twisted structurally chiral material (CTSCM), which is an anisotropic solid that is periodically non-homogeneous in the direction normal to the planar surface. Numerical studies reveal that this surface can support either one or two Rayleigh waves at a fixed frequency, depending on the structural period and orientation of the CTSCM. In the case of two Rayleigh waves, each wave possesses a different wavenumber. The Rayleigh wave with the larger wavenumber is more localized to the surface and has a phase speed that changes less as the angular frequency varies in comparison with the Rayleigh wave with the smaller wavenumber.

show abstract