TY - GEN
T1 - Phononic crystal with free-form waveguiding and broadband attenuation
AU - Anerao, N. S.
AU - Badillo-Avila, M. A.
AU - Stokroos, M.
AU - Acuautla, M.
AU - Krushynska, A. O.
N1 - Funding Information:
This research was supported by the start-up grants of the FSE at the University of Groningen. The authors acknowledge dr. T.C. Pijper (Philips Drachten, the Innovation Cluster, The Netherlands) for manufacturing the MJF samples and the Center for Information Technology of the University of Groningen for providing access to the Peregrine high performance computing cluster.
Publisher Copyright:
© 2021 IEEE.
PY - 2021/9/20
Y1 - 2021/9/20
N2 - Waveguiding is highly desirable for multiple applications but is challenging to achieve in wide continuous frequency ranges. In this work, we developed a three-dimensional phononic crystal with broadband waveguiding functionality. Waveguiding is achieved by combining two types of unit cells with different wave scattering features to create an arbitrary-curved defect path. The unit cell design is governed by contradictory requirements to induce narrow- and broad-band wave attenuation along the path and within the phononic medium, respectively. This is achieved by modulating structural parameters to activate Bragg's scattering, local resonances and inertial amplification mechanism and interplay between them. We demonstrated numerically and experimentally the waveguiding with strong wave localization and confinement in additively manufactured three-dimensional structures along straight, angle- and arbitrary-curved paths. This work opens new perspectives for the practical utilization of phononic crystals in ultrasonic sensors, medical devices, and acoustic energy harvesters.
AB - Waveguiding is highly desirable for multiple applications but is challenging to achieve in wide continuous frequency ranges. In this work, we developed a three-dimensional phononic crystal with broadband waveguiding functionality. Waveguiding is achieved by combining two types of unit cells with different wave scattering features to create an arbitrary-curved defect path. The unit cell design is governed by contradictory requirements to induce narrow- and broad-band wave attenuation along the path and within the phononic medium, respectively. This is achieved by modulating structural parameters to activate Bragg's scattering, local resonances and inertial amplification mechanism and interplay between them. We demonstrated numerically and experimentally the waveguiding with strong wave localization and confinement in additively manufactured three-dimensional structures along straight, angle- and arbitrary-curved paths. This work opens new perspectives for the practical utilization of phononic crystals in ultrasonic sensors, medical devices, and acoustic energy harvesters.
UR - http://www.scopus.com/inward/record.url?scp=85118943207&partnerID=8YFLogxK
U2 - 10.1109/Metamaterials52332.2021.9577166
DO - 10.1109/Metamaterials52332.2021.9577166
M3 - Conference contribution
AN - SCOPUS:85118943207
SN - 978-1-6654-3083-8
T3 - 2021 15th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2021
SP - 18
EP - 20
BT - 202115th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 15th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2021
Y2 - 20 September 2021 through 25 September 2021
ER -