piezoelectric properties
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2022 ◽  
Vol 892 ◽  
pp. 162132
Author(s):  
Xiangyu Gao ◽  
Haonan Jin ◽  
Benjian Xin ◽  
Mingwen Wang ◽  
Shuxiang Dong ◽  
...  

Author(s):  
Saptarshi Karmakar ◽  
Raj Kiran ◽  
Rahul Vaish ◽  
Vishal Singh Chauhan

The present paper is devoted to conducting a comparative study on the sensing and energy harvesting performance of a 0-3 and triply periodic minimal surface (TPMS)-based piezocomposite with [Formula: see text] ( KNLNTS) material as piezoelectric inclusions and polyethylene as the matrix material. Different types of TPMS are reported in literature like Neovius, Fischer-Koch S, Schwarz CLP, Schoen Gyroid, Schoen IWP, Schwarz Primitive, etc. In the present study, Schwarz primitive TPMS is considered. Representative volume elements (RVEs) with four different volume fractions are generated and the finite element simulations are performed to compute the effective elastic and piezoelectric properties. The homogenization technique is used to calculate the effective properties. The calculated values of the effective properties are further used to calculate the sensing voltage between the electrodes and harvested power across the resistance. The effective elastic and piezoelectric properties increase with an increase in volume fraction of the piezoelectric inclusions resulting in a higher sensing voltage and power. Significant improvement in the effective elastic and piezoelectric properties of TPMS-based piezocomposite was observed. TPMS-based piezocomposite exhibited superior performance as compared to their 0-3 counterparts.


Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 413
Author(s):  
Małgorzata Adamczyk-Habrajska ◽  
Beata Wodecka-Duś ◽  
Tomasz Goryczka ◽  
Diana Szalbot ◽  
Mateusz Bara ◽  
...  

Lanthanum-modified BaTiO3 electroceramic materials have superior dielectric and piezoelectric properties. Ba0.996La0.004Ti0.999O3 (BLT4) seems to be a serious candidate for ultracondensator applications. This manuscript describes the results of hafnium and europium modification of BLT 4 ceramics. The pure and doped ceramic materials were synthesized by the conventional mixed oxide method. The microstructure of obtained samples was examined by scanning electron microscope. The investigations reveal strong correlations between the presence of admixture and the grain size, which was especially visible in the case of the hafnium dopant. The frequency and temperature dielectric characteristics measurements revealed a decrease in electric permittivity. Moreover, the impedance spectroscopy investigations showed severe changes in grains and grain-boundary resistivity, which was connected with changes in electric conductivity.


2022 ◽  
Author(s):  
Majid S. Khalaf ◽  
Hussein Inayah Sharhan ◽  
Fadhel Rukhis Hafedh ◽  
Asmaa Hadi Mohammed ◽  
Marwa Abdul Muhsien Hassan

2022 ◽  
Vol 889 ◽  
pp. 161649
Author(s):  
Sijing Zhang ◽  
Zhimin Li ◽  
Maolin Zhang ◽  
Dongyan Zhang ◽  
Yangxi Yan

2022 ◽  
Vol 890 ◽  
pp. 161799
Author(s):  
Pengwei Jia ◽  
Yuanliang Li ◽  
Zhanshen Zheng ◽  
Zhongqiu Li ◽  
Liguo Cao ◽  
...  

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