Phononic crystals with decoupled different defects enhance energy localization and harvesting performance DOI
Guoyu Zhang, Zi‐Jiang Liu, Yan Zhang

et al.

The Journal of the Acoustical Society of America, Journal Year: 2025, Volume and Issue: 157(4), P. 2697 - 2708

Published: April 1, 2025

Utilizing phononic crystals (PnCs) to enhance the performance of piezoelectric energy harvesting (PEH) devices is essential for addressing self-power challenges low-power devices. Building on prior research concerning incomplete line defect PnCs, this study presents a PnC designed with decoupled defects (i.e., point-defects and defects). The dispersion curve, localization, system were investigated. results indicate that as distance between two subsystems point-defect system) decreases, all constructed supercells exhibit decoupling properties. Notably, when reduced unit cells, demonstrates optimal broadband localization performance, achieving maximum output power 9.49 mW. Compared previous studies, exhibits superior capabilities, electrical increasing by factor 2.56 7.68. Consequently, offer novel insights strategies enhancing PEH through application PnCs multiple defects.

Language: Английский

Electroelastically coupled stiffness matrix method for phononic crystals with piezoelectric defects and its applications to filters, sensors, and energy harvesters DOI
Soo-Ho Jo

Mechanics of Materials, Journal Year: 2025, Volume and Issue: unknown, P. 105262 - 105262

Published: Jan. 1, 2025

Language: Английский

Citations

1
Phononic crystals with decoupled different defects enhance energy localization and harvesting performance DOI
Guoyu Zhang, Zi‐Jiang Liu, Yan Zhang

et al.

The Journal of the Acoustical Society of America, Journal Year: 2025, Volume and Issue: 157(4), P. 2697 - 2708

Published: April 1, 2025

Utilizing phononic crystals (PnCs) to enhance the performance of piezoelectric energy harvesting (PEH) devices is essential for addressing self-power challenges low-power devices. Building on prior research concerning incomplete line defect PnCs, this study presents a PnC designed with decoupled defects (i.e., point-defects and defects). The dispersion curve, localization, system were investigated. results indicate that as distance between two subsystems point-defect system) decreases, all constructed supercells exhibit decoupling properties. Notably, when reduced unit cells, demonstrates optimal broadband localization performance, achieving maximum output power 9.49 mW. Compared previous studies, exhibits superior capabilities, electrical increasing by factor 2.56 7.68. Consequently, offer novel insights strategies enhancing PEH through application PnCs multiple defects.

Language: Английский

Citations

0