One-Dimensional Phononic Crystals

Boudouti, El Houssaine El; Akjouj, Abdellatif; Djafari‐Rouhani, Bahram; Pennec, Yan; Al-Wahsh, Housni; Lévêque, Gaëtan

doi:10.1016/b978-0-12-809948-3.00004-1

Cited by 3 publications

(1 citation statement)

References 193 publications

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“…Each atom can vibrate about its mean position in a simple harmonic motion like a tiny spring due to its own thermal energy or outside forces. Hence collectively, the lattice also vibrates as it is made up of these single vibrating atoms grouped together 25 . This results in the generation of mechanical waves in the crystal that carry heat and sound in the form of waves throughout the material.…”

Section: Phononics: Phonon Engineeringmentioning

confidence: 99%

Graphene and its Phononics: A Review

AHMAD¹,

SINGH²

2021

jusps-B

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Graphene, a unique allotrope of carbon, has garnered a huge amount of attention amongst researchers as its unique properties and promising applications in various real-life domains like in efficient batteries, solar cells, medicinal technologies, environmental remediation, circuit boards, lighting and display, and anti-corrosion has resulted in its commercial exploitation and implementation in everyday life. Since 2004 graphene has been one of the most beautiful scientific and technological achievements. The unique electronic cloud forming the bond between different carbon atoms in graphene leads to several inquisitive questions raised in the field of quantum physics. Till now graphene has been exploited for its electronic and optical properties but new research has shown that phononic properties of graphene will lead to the development of “killer” practical applications in the future. In this review article we have explored the structure, properties and the phononics of graphene with a special reference to few-layer graphene (FLG) and graphene Thermal Interface Materials (TIMs).

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Section: Phononics: Phonon Engineeringmentioning

confidence: 99%

Graphene and its Phononics: A Review

AHMAD¹,

SINGH²

2021

jusps-B

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Phononics of Graphene and Related Materials

2020

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Locally Resonant Phononic Crystals at Low frequencies Based on Porous SiC Multilayer

Mehaney

Ahmed

2019

Sci Rep

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In this work, a one-dimensional porous silicon carbide phononic crystal (1D-PSiC PnC) sandwiched between two rubber layers is introduced to obtain low frequency band gaps for the audible frequencies. The novelty of the proposed multilayer 1D-PnCs arises from the coupling between the soft rubber, unique mechanical properties of porous SiC materials and the local resonance phenomenon. The proposed structure could be considered as a 1D acoustic Metamaterial with a size smaller than the relevant 1D-PnC structures for the same frequencies. To the best of our knowledge, it is the first time to use PSiC materials in a 1D PnC structure for the problem of low frequency phononic band gaps. Also, the porosities and thicknesses of the PSiC layers were chosen to obtain the fundamental band gaps within the bandwidth of the acoustic transducers and sound suppression devices. The transmission spectrum of acoustic waves is calculated by using the transfer matrix method (TMM). The results revealed that surprising low band gaps appeared in the transmission spectra of the 1D-PSiC PnC at the audible range, which are lower than the expected ones by Bragg’s scattering theory. The frequency at the center of the first band gap was at the value 7957 Hz, which is 118 times smaller than the relevant frequency of other 1D structures with the same thickness. A comparison between the phononic band gaps of binary and ternary 1D-PSiC PnC structures sandwiched between two rubber layers at the micro-scale was performed and discussed. Also, the band gap frequency is controlled by varying the layers porosity, number and the thickness of each layer. The simulated results are promising in many applications such as low frequency band gaps, sound suppression devices, switches and filters.

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One-Dimensional Phononic Crystals

Cited by 3 publications

References 193 publications

Graphene and its Phononics: A Review

Graphene and its Phononics: A Review

Phononics of Graphene and Related Materials

Locally Resonant Phononic Crystals at Low frequencies Based on Porous SiC Multilayer

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