TY - JOUR
T1 - High quality broadband spatial reflections of slow Rayleigh surface acoustic waves modulated by a graded grooved surface
AU - Xu, Yanlong
AU - Peng, Pai
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2015/1/21
Y1 - 2015/1/21
N2 - We report high quality broadband spatial reflections of Rayleigh surface acoustic waves (SAWs) through a graded grooved surface. High quality means that no wave is allowed to transmit and the incident wave is nearly all reflected to the input side. The graded grooved surface is structured by drilling one dimensional array of graded grooves with increased depths on a flat surface. We investigate SAW dispersion relations, wave field distribution at several typical SAW wavelengths, and time evolution of a Gaussian pulse through the graded grooved surface. Results show that the input broadband Rayleigh SAWs can be slowed, spatially enhanced and stopped, and finally reflected to the input side. The study suggests that engraving the flat surface can be used as an efficient and economical way to manipulate Rayleigh SAWs, which has potential application in novel SAW devices such as filters, reflectors, sensors, energy harvesters, and diodes.
AB - We report high quality broadband spatial reflections of Rayleigh surface acoustic waves (SAWs) through a graded grooved surface. High quality means that no wave is allowed to transmit and the incident wave is nearly all reflected to the input side. The graded grooved surface is structured by drilling one dimensional array of graded grooves with increased depths on a flat surface. We investigate SAW dispersion relations, wave field distribution at several typical SAW wavelengths, and time evolution of a Gaussian pulse through the graded grooved surface. Results show that the input broadband Rayleigh SAWs can be slowed, spatially enhanced and stopped, and finally reflected to the input side. The study suggests that engraving the flat surface can be used as an efficient and economical way to manipulate Rayleigh SAWs, which has potential application in novel SAW devices such as filters, reflectors, sensors, energy harvesters, and diodes.
UR - http://hdl.handle.net/10754/346728
UR - http://scitation.aip.org/content/aip/journal/jap/117/3/10.1063/1.4905948
UR - http://www.scopus.com/inward/record.url?scp=84923668405&partnerID=8YFLogxK
U2 - 10.1063/1.4905948
DO - 10.1063/1.4905948
M3 - Article
SN - 0021-8979
VL - 117
SP - 035103
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 3
ER -