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Sub- and supersonic elastic waves in an annular hole phononic metamaterial
- Source :
- Communications Materials, Vol 2, Iss 1, Pp 1-8 (2021)
- Publication Year :
- 2021
- Publisher :
- Nature Portfolio, 2021.
-
Abstract
- Surface acoustic wave (SAW) devices are used in a wide range of applications including sensing and microfluidics, and are now being developed for applications such as quantum computing. As with photonics, and other electromagnetic radiation, metamaterials offer an exciting route to control and manipulate SAW propagation, which could lead to new device concepts and paradigms. In this work we demonstrate that a phononic metamaterial comprising an array of annular hole resonators can be used to realise frequency control of SAW velocity. We show, using simulations and experiment, that metamaterial patterning on a lithium niobate substrate allows control of SAW phase velocities to values slower and faster than the velocity in an unpatterned substrate; namely, to ~85% and ~130% of the unpatterned SAW velocity, respectively. This approach could lead to novel designs for SAW devices, such as delay lines and chirp filters, but could also be applied to other elastic waves. Surface acoustic waves are important in a wide range of applications such as telecommunication filters, sensors, and microfluidic devices. Here, patterning of a phononic metamaterial formed of annular hole resonators enables frequency control of the surface wave phase velocities.
- Subjects :
- 010302 applied physics
Materials science
business.industry
Surface acoustic wave
Lithium niobate
Physics::Optics
Metamaterial
02 engineering and technology
Acoustic wave
021001 nanoscience & nanotechnology
01 natural sciences
Resonator
chemistry.chemical_compound
chemistry
Mechanics of Materials
Surface wave
0103 physical sciences
Chirp
TA401-492
Optoelectronics
General Materials Science
Photonics
0210 nano-technology
business
Materials of engineering and construction. Mechanics of materials
Subjects
Details
- Language :
- English
- ISSN :
- 26624443
- Volume :
- 2
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Communications Materials
- Accession number :
- edsair.doi.dedup.....be1db9516798c127fbc28e1c422d2c9a