Analysis of the laterally bent piezoelectric semiconductor fibers with variable cross-sections

Xu, Zelin, Fang, Kai, Yu, Mengran, Wang, Tiqing, Li, Peng, Qian, Zhenghua and Liu, Dianzi (2023) Analysis of the laterally bent piezoelectric semiconductor fibers with variable cross-sections. Journal of Applied Physics, 133 (19). ISSN 0021-8979

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Piezoelectric semiconductor (PS) materials have attracted much attention in recent years due to their unique properties. This paper explores the electromechanical coupling behavior of bent piezoelectric semiconductor fibers with non-uniform cross-sectional areas. The study uses the generalized differential quadrature method to numerically solve the field equations with variable coefficients derived from piezoelectric theory. The research examines the mechanical and electrical field distribution of bent variable cross-sectional fibers, comparing the performances of non-uniform fibers with different profiles. The study reveals that the variable cross-sectional profile of the fiber changes the characteristic of the uniform fiber’s electrical distribution along the axis, and it exhibits a more sensitive and stronger electrical response to the same external force. The research also shows that the concavity and convexity of the radius distribution function of the non-uniform fibers determine whether there are extreme points of surface potential. Finally, the study suggests that by designing extreme points of the PS fiber profile, surface potential extreme points can be artificially created at the same location. These results offer a theoretical direction for creating advanced piezoelectric semiconductor nanodevices and present novel insights into designing higher-efficiency nanogenerators and mechanical strain sensors in the future.

Item Type: Article
Additional Information: Data availability: The data that support the findings of this study are available from the corresponding author upon reasonable request. Funding inforamtion: This work was supported by the National Natural Science Foundation of China (Nos. 12061131013, 11972276, 12172171, and 12211530064), the State Key Laboratory of Mechanics and Control of Mechanical Structures at NUAA (No. MCMS-I-0522G01), the Fundamental Research Funds for the Central Universities (Nos. NS2022011 and NE2020002), the National Natural Science Foundation of Jiangsu Province (No. BK20211176), the Local Science and Technology Development Fund Projects Guided by the Central Government (No. 2021Szvup061), the Jiangsu High-Level Innovative and Entrepreneurial Talents Introduction Plan (Shuangchuang Doctor Program, No. JSSCBS20210166), and a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).
Uncontrolled Keywords: physics and astronomy(all) ,/dk/atira/pure/subjectarea/asjc/3100
Faculty \ School: Faculty of Science > School of Engineering
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Depositing User: LivePure Connector
Date Deposited: 10 May 2023 14:30
Last Modified: 01 Jun 2023 09:31
DOI: 10.1063/5.0152306


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