| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Tunable Band Gap in Piezoelectric Composite Rod Based on the Inter-Coupling Effect |
| Ze-Qun Fang, Zhi-Lin Hou** |
School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510641
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| Cite this article: |
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Ze-Qun Fang, Zhi-Lin Hou 2018 Chin. Phys. Lett. 35 054601 |
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Abstract The longitudinal wave propagating in one-dimensional periodic piezoelectric composite rod with inter-coupling between different piezoelectric segments is investigated. The analytical formulae for such a structure are shown and the dispersion relation is calculated. The results show that, by introducing the inter-coupling between the different piezoelectric segments, which is accomplished by serially connecting every $n$ piezoelectric segment into supercells, some tunable Bragg band gaps can accordingly be opened in the low frequency region. The investigation could provide a new guideline for the tunable phononic crystal under passive control.
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Received: 21 December 2017
Published: 30 April 2018
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| PACS: |
46.40.-f
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(Vibrations and mechanical waves)
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77.65.-j
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(Piezoelectricity and electromechanical effects)
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62.25.Jk
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(Mechanical modes of vibration)
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63.22.-m
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(Phonons or vibrational states in low-dimensional structures and nanoscale materials)
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| Fund: Supported by the National Natural Science Foundation of China under Grant No 11274121. |
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