Polarization response characteristics of structure gradient MWCNTs/PDMS under vibration
Low electromechanical coupling coefficient has become the key problem restricting the application of flexible electronic components. In this paper, structure gradient MWCNTs/PDMS composites have been prepared, the electromechanical properties have been investigated by cantilever beam experiment. Num...
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Elsevier
2025-01-01
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| Series: | Results in Physics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379724007800 |
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| author | Feigao Fan Yihao Liu Mengzhou Chang Lulu Li Kai Guo |
| author_facet | Feigao Fan Yihao Liu Mengzhou Chang Lulu Li Kai Guo |
| author_sort | Feigao Fan |
| collection | DOAJ |
| description | Low electromechanical coupling coefficient has become the key problem restricting the application of flexible electronic components. In this paper, structure gradient MWCNTs/PDMS composites have been prepared, the electromechanical properties have been investigated by cantilever beam experiment. Numerical simulations based on flexoelectric theory have been conducted to investigate the relationship between polarization strengths, voltage distributions and strain gradients. The results show that polarization voltage U show sinusoidal-like periodic decay behavior. Generally, U of linear structure gradient cantilever beam (98.6 mV) are larger than homogeneous structure (56.3 mV, 1 wt%), symmetry and anti-symmetry structure gradient. The polarization strength P of linear structural gradient cantilever beam is in the range of −600 ∼ 600 pC/m2. There exists an out of phase relationship between P and displacement. The flexoelectric coefficients of homogeneous structure MWCNTs/PDMS are generally about 10-10C·m−1. However, that of linear structure gradient MWCNTs/PDMS reaches 10-8C·m−1. The structure gradient MWCNTs/PDMS composites with high electromechanical coupling coefficients can be used in the field of flexible intelligent sensing in the future. |
| format | Article |
| id | doaj-art-b3dc42857a2a4b10ac486065b62aeef8 |
| institution | Kabale University |
| issn | 2211-3797 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj-art-b3dc42857a2a4b10ac486065b62aeef82025-01-18T05:04:34ZengElsevierResults in Physics2211-37972025-01-0168108095Polarization response characteristics of structure gradient MWCNTs/PDMS under vibrationFeigao Fan0Yihao Liu1Mengzhou Chang2Lulu Li3Kai Guo4Key Laboratory of Transient Physical Mechanics and Energy Conversion Materials of Liaoning Province, Shenyang Ligong University, Shenyang 110159, ChinaTianjin Key Laboratory of Functional Crystal Materials, Institute of Functional Crystal, College of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China; Key Laboratory of Transient Physical Mechanics and Energy Conversion Materials of Liaoning Province, Shenyang Ligong University, Shenyang 110159, ChinaKey Laboratory of Transient Physical Mechanics and Energy Conversion Materials of Liaoning Province, Shenyang Ligong University, Shenyang 110159, China; School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; Corresponding author at: Key Laboratory of Transient Physical Mechanics and Energy Conversion Materials of Liaoning Province, Shenyang Ligong University, Shenyang 110159, China.Key Laboratory of Transient Physical Mechanics and Energy Conversion Materials of Liaoning Province, Shenyang Ligong University, Shenyang 110159, ChinaKey Laboratory of Transient Physical Mechanics and Energy Conversion Materials of Liaoning Province, Shenyang Ligong University, Shenyang 110159, ChinaLow electromechanical coupling coefficient has become the key problem restricting the application of flexible electronic components. In this paper, structure gradient MWCNTs/PDMS composites have been prepared, the electromechanical properties have been investigated by cantilever beam experiment. Numerical simulations based on flexoelectric theory have been conducted to investigate the relationship between polarization strengths, voltage distributions and strain gradients. The results show that polarization voltage U show sinusoidal-like periodic decay behavior. Generally, U of linear structure gradient cantilever beam (98.6 mV) are larger than homogeneous structure (56.3 mV, 1 wt%), symmetry and anti-symmetry structure gradient. The polarization strength P of linear structural gradient cantilever beam is in the range of −600 ∼ 600 pC/m2. There exists an out of phase relationship between P and displacement. The flexoelectric coefficients of homogeneous structure MWCNTs/PDMS are generally about 10-10C·m−1. However, that of linear structure gradient MWCNTs/PDMS reaches 10-8C·m−1. The structure gradient MWCNTs/PDMS composites with high electromechanical coupling coefficients can be used in the field of flexible intelligent sensing in the future.http://www.sciencedirect.com/science/article/pii/S2211379724007800Structure gradientMWCNTs/PDMS compositesElectromechanical couplingVibrationFlexoelectric effect |
| spellingShingle | Feigao Fan Yihao Liu Mengzhou Chang Lulu Li Kai Guo Polarization response characteristics of structure gradient MWCNTs/PDMS under vibration Results in Physics Structure gradient MWCNTs/PDMS composites Electromechanical coupling Vibration Flexoelectric effect |
| title | Polarization response characteristics of structure gradient MWCNTs/PDMS under vibration |
| title_full | Polarization response characteristics of structure gradient MWCNTs/PDMS under vibration |
| title_fullStr | Polarization response characteristics of structure gradient MWCNTs/PDMS under vibration |
| title_full_unstemmed | Polarization response characteristics of structure gradient MWCNTs/PDMS under vibration |
| title_short | Polarization response characteristics of structure gradient MWCNTs/PDMS under vibration |
| title_sort | polarization response characteristics of structure gradient mwcnts pdms under vibration |
| topic | Structure gradient MWCNTs/PDMS composites Electromechanical coupling Vibration Flexoelectric effect |
| url | http://www.sciencedirect.com/science/article/pii/S2211379724007800 |
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