Piezoelectric characteristics of PVA/DL-alanine polycrystals in d(33) mode.
Piezoelectric characteristics of PVA/DL-alanine polycrystals in d(33) mode.
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DOI：
10.1016/j.isci.2022.105768
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发表时间：
2023-01-20
期刊：
影响因子：
5.8
通讯作者：
Yoon, Giwan
中科院分区：
文献类型：
--
作者：
Jeon, Buil;Han, Dongsoo;Yoon, Giwan
本研究制备了聚乙烯醇(PVA)-混合DL-丙氨酸(PVA/DL-丙氨酸)多晶，并研究了其在D33模式下的压电特性。发现聚乙烯醇/DL-丙氨酸多晶的D33压电系数随DL-丙氨酸质量比的增加而增大，当聚乙烯醇和DL-丙氨酸的质量比为1：3时，其∼为5pC/N。用扫描电子显微镜和X射线衍射仪从晶体结构的角度讨论了其压电性能。为了确定多晶体的压电性能，测量并比较了由单层氧化锌薄膜组成的压电器件和由PVA/DL-丙氨酸多晶层和氧化锌薄膜组成的异质结构器件的压电电压。本研究展示了PVA/DL-丙氨酸多晶作为一种潜在的生物友好型压电器件应用的压电材料。PVA/DL-丙氨酸多晶在D33模式下表现出压电特性PVA/DL-丙氨酸多晶由c轴与三轴压电性排列的DL-丙氨酸组成PVA/DL-丙氨酸多晶的压电性取决于DL-丙氨酸的排列机械性能、电性能、材料表征技术
In this study, polyvinyl alcohol (PVA)-mixed DL-alanine (PVA/DL-alanine) polycrystals are fabricated, and their piezoelectric characteristics in the d33 mode are investigated. The d33 piezoelectric coefficients of the PVA/DL-alanine polycrystals are found to increase with an increase in the weight ratio of DL-alanine, and the PVA/DL-alanine polycrystal composed of PVA and DL-alanine in a weight ratio of 1:3 exhibits a d33 of ∼5 pC/N. The piezoelectric characteristics of the PVA/DL-alanine polycrystals are discussed in terms of the crystal structure by employing scanning electron microscopy and X-ray diffraction analyses. To confirm the piezoelectric performance of the polycrystals, the piezoelectric voltages of a piezoelectric device composed of a single layer of ZnO thin film and heterostructured devices consisting of a layer of PVA/DL-alanine polycrystal and a ZnO thin film layer are measured and compared. This study presents PVA/DL-alanine polycrystals as a potential piezoelectric material for bio-friendly piezoelectric-device applications. PVA/DL-alanine polycrystals show piezoelectric characteristics in the d33 mode PVA/DL-alanine polycrystals consist of DL-alanine with c-axis aligned to the 3-axis Piezoelectricity of PVA/DL-alanine polycrystals depends on the alignment of DL-alanine Mechanical property; Electrical property; Materials characterization techniques
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