Journal
APPLIED PHYSICS LETTERS
Volume 118, Issue 12, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/5.0043550
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [51875521]
- Zhejiang Provincial Natural Science Foundation of China [LZ19E050002]
- UK Engineering and Physical Sciences Research Council [EPSRC EP/P018998/1]
- Newton Mobility Grant through Royal Society [IE161019]
- NFSC
- UK Engineering and Physical Sciences Research Council [UK Fluidic Network] [EP/N032861/1]
Ask authors/readers for more resources
This study developed a multi-sublayer model based on a stiffness matrix method to analyze the frequency shifts of surface acoustic waves and Lamb waves under elasto-plastic deformations. Experimental results show good agreement with theoretical predictions in elastic bending tests and relatively good agreement in nonlinearly elasto-plastic bending. The frequency shifts obtained experimentally demonstrate good repeatability in both elastic and elasto-plastic bending processes.
Flexible acoustic wave devices (FAWDs) have been explored in various applications where bending is inevitable. However, theoretical investigations of bending behavior of FAWDs hitherto are mostly done in the linear deformation regime. Herein, we develop a multi-sublayer model based on a stiffness matrix method for analysis of frequency shifts of surface acoustic waves and Lamb waves under elasto-plastic deformations. Using this model, we calculate the frequency shifts for the cases of both an elastic bending and an elasto-plastic bending. Experimental frequency shifts of ZnO/Al flexible devices show good agreement with the theoretical results in the elastic bending tests (with a relative error of strain sensitivity<3%) and also show relatively good agreement with the qualitative theoretical predictions in the nonlinearly elasto-plastic bending. For three successive bending and recovery processes, the experimentally obtained frequency shifts show good repeatability in the elastic and elasto-plastic bending, demonstrating maximum relative errors of strain sensitivities less than 6.1% and 18.2%.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available