提出一种压电效应和电磁效应相结合的微型能量采集器,基础结构为压电换能器(PZT)基八悬臂梁、长有Au线圈质量块、铷铁硼(Nd Fe B)永磁体。利用有限元分析软件ANSYS对微结构建立模型,通过结构力学特性分析,得到所设计结构的一阶谐振频率...提出一种压电效应和电磁效应相结合的微型能量采集器,基础结构为压电换能器(PZT)基八悬臂梁、长有Au线圈质量块、铷铁硼(Nd Fe B)永磁体。利用有限元分析软件ANSYS对微结构建立模型,通过结构力学特性分析,得到所设计结构的一阶谐振频率为214.7 Hz,为后期测试提供指导意义。制定微机电系统(MEMS)加工工艺流程,利用L-Edit软件设计并绘制所需掩模版。利用溶胶—凝胶(sol-gel)技术制备厚度为3 529 nm的PZT压电厚膜,实现了其与基底Pt/Ti/Si O2/Si/Si O2的良好异质集成,完成微型能量采集器制造过程中关键一步。经介电性能测试,PZT厚膜具有双蝴蝶状的极化反转峰,体现出较高的介电性能和耐压强度。400 k V/cm驱动条件下,测得PZT厚膜的电滞回线,其剩余极化强度Pr为37.7μC/cm2,矫顽场强为41.2 k V/cm,表现出良好的铁电性能。展开更多
This paper presents the design, fabrication, and preliminary experimental result of an electric field microsensor based on the structure of piezoelectric interdigitated cantilevers with staggered vertical vibration mo...This paper presents the design, fabrication, and preliminary experimental result of an electric field microsensor based on the structure of piezoelectric interdigitated cantilevers with staggered vertical vibration mode. The working principle of this electric field microsensor is demonstrated, and the induced charges and structural parameters of this microsensor are simulated by the finite element method. The electric field microsensor was fabricated by Micro-Electro Mechanical Systems(MEMS) technique. Each cantilever is a multilayer compound structure(Al/Si3N4/ Pt/PZT/Pt/ Ti/SiO 2/Si), and Piezoelectric, PieZ oelectric ceramic Transducer(PZT)(PbZ rxTi(1–x)O3) layer, prepared by sol-gel method, is used as the piezoelectric material to drive the cantilevers vibrating. This electric field microsensor was tested under the DC electric field with the field intensity from 0 to 5×104 V/m. The output voltage signal of the electric field microsensor has a good linear relationship to the intensity of applied electric field. The performance could be improved with the optimized design of structure, and reformative fabrication processes of PZT material.展开更多
文摘提出一种压电效应和电磁效应相结合的微型能量采集器,基础结构为压电换能器(PZT)基八悬臂梁、长有Au线圈质量块、铷铁硼(Nd Fe B)永磁体。利用有限元分析软件ANSYS对微结构建立模型,通过结构力学特性分析,得到所设计结构的一阶谐振频率为214.7 Hz,为后期测试提供指导意义。制定微机电系统(MEMS)加工工艺流程,利用L-Edit软件设计并绘制所需掩模版。利用溶胶—凝胶(sol-gel)技术制备厚度为3 529 nm的PZT压电厚膜,实现了其与基底Pt/Ti/Si O2/Si/Si O2的良好异质集成,完成微型能量采集器制造过程中关键一步。经介电性能测试,PZT厚膜具有双蝴蝶状的极化反转峰,体现出较高的介电性能和耐压强度。400 k V/cm驱动条件下,测得PZT厚膜的电滞回线,其剩余极化强度Pr为37.7μC/cm2,矫顽场强为41.2 k V/cm,表现出良好的铁电性能。
文摘This paper presents the design, fabrication, and preliminary experimental result of an electric field microsensor based on the structure of piezoelectric interdigitated cantilevers with staggered vertical vibration mode. The working principle of this electric field microsensor is demonstrated, and the induced charges and structural parameters of this microsensor are simulated by the finite element method. The electric field microsensor was fabricated by Micro-Electro Mechanical Systems(MEMS) technique. Each cantilever is a multilayer compound structure(Al/Si3N4/ Pt/PZT/Pt/ Ti/SiO 2/Si), and Piezoelectric, PieZ oelectric ceramic Transducer(PZT)(PbZ rxTi(1–x)O3) layer, prepared by sol-gel method, is used as the piezoelectric material to drive the cantilevers vibrating. This electric field microsensor was tested under the DC electric field with the field intensity from 0 to 5×104 V/m. The output voltage signal of the electric field microsensor has a good linear relationship to the intensity of applied electric field. The performance could be improved with the optimized design of structure, and reformative fabrication processes of PZT material.
