Diamond‐Based Acoustic Devices

Williams, Oliver A.; Haenen, Ken

doi:10.1002/9783527623174.ch7

Cited by 3 publications

(2 citation statements)

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“…The acoustic waves, consisting of bulk acoustic wave (BAW) and surface acoustic wave (SAW), are caused by density fluctuations in matters and provide information about the elasticity, electrostriction, and thermal capacity of materials [1][2][3][4] . Both the SAW-based and BAW-based devices have been widely applied in the communication 6 1.277 10 ´6 1.727 10 ´ and sensing devices, such as acoustic radio frequency (RF) filter, resonator and SAW microelectromechanical systems (MEMS) [5][6][7][8] . The use of micro-acoustic devices greatly shrunk the size of signal processor in the field of communications.…”

Section: Introductionmentioning

confidence: 99%

“…Diamond shows excellent performance in the high-frequency and high-power acoustic wave devices, thanks to its superhigh elastic modulus and thermal conductivity, stable chemical property as well as low thermal expansion coefficient and dielectric constant [10] . The piezoelectric film/diamond multilayer structure has been extensively applied in high-frequency and high-power SAW devices [11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

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Measuring bulk and surface acoustic modes in diamond by angle-resolved Brillouin spectroscopy

Xie

Ren

Gao

et al. 2021

Sci. China Phys. Mech. Astron.

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The acoustic modes of diamond not only are of profound significance for studying its thermal conductivity, mechanical properties and optical properties, but also play a determined role in the performance of high-frequency and high-power acoustic wave devices. Here we report the bulk acoustic waves (BAWs) and surface acoustic waves (SAWs) of single crystal diamond by using the angle-resolved Brillouin light scattering (BLS) spectroscopy. We identify two high-velocity surface skimming bulk waves, with sound velocities of and cm/s, respectively. Furthermore, we conduct the relationship among the refractive index, incident angle and the velocities of BAWs propagating along an arbitrary direction. Our results may provide a valuable reference for fundamental researches and devices engineering in the community of diamond-based acoustic study.

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