Tunable Locally Resonant Surface-Acoustic-Waveguiding Behavior by Acoustoelectric Interaction in ZnO -Based Phononic Crystal
| Autor: | Sara Darbari, F. Taleb |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Surface (mathematics)
Yield (engineering) Materials science business.industry Band gap Pillar General Physics and Astronomy Resonance 02 engineering and technology Acoustic wave 021001 nanoscience & nanotechnology medicine.disease_cause 01 natural sciences Crystal Condensed Matter::Materials Science 0103 physical sciences medicine Optoelectronics 010306 general physics 0210 nano-technology business Ultraviolet |
| Zdroj: | Physical Review Applied. 11 |
| ISSN: | 2331-7019 |
| DOI: | 10.1103/physrevapplied.11.024030 |
| Popis: | The authors consider the guiding of surface acoustic waves by the local resonance band gap of a ZnO pillar-based phononic crystal, by introducing a hollow-cylindrical linear defect. Such a defect can be structurally engineered to yield narrow-band guiding modes near the middle of the gap. Moreover, the authors point out the frequency tunability of this waveguiding behavior, thanks to the acoustoelectric response of ZnO to ultraviolet illumination. This approach is attractive for designing reconfigurable, high-$Q$ surface-acoustic-wave devices, such as filters and duplexers for wireless communication. |
| Databáze: | OpenAIRE |
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