| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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On the Fundamental Mode Love Wave in Devices Incorporating Thick Viscoelastic Layers |
| LIU Jian-Sheng**, WANG Li-Jun, HE Shi-Tang |
Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190
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| Cite this article: |
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LIU Jian-Sheng, WANG Li-Jun, HE Shi-Tang 2015 Chin. Phys. Lett. 32 064301 |
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Abstract A detailed investigation is presented for Love waves (LWs) with thick viscoelastic guiding layers. A theoretical calculation and an experiment are carried out for LW devices incorporating an SU-8 guiding layer, an ST-90° X quartz substrate and two 28-μm periodic interdigital transducers. Both the calculated and the measured results show an increase in propagation velocity when h/λ>0.05. The measured insertion loss of LWs is consistent with the calculated propagation loss. The insertion loss of bulk waves is also measured and is compared with that of LWs.
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Received: 05 February 2015
Published: 30 June 2015
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| PACS: |
43.35.+d
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(Ultrasonics, quantum acoustics, and physical effects of sound)
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43.38.+n
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(Transduction; acoustical devices for the generation and reproduction of sound)
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62.20.-x
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(Mechanical properties of solids)
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