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Solution blow spinning of piezoelectric nanofiber mat for detecting mechanical and acoustic signals |
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| Authors: | Eman Elnabawy Mazen Farag Amira Soliman Kamal Mahmoud Nader Shehata Remya Nair Ishac Kandas Rasheed Atif Madeleine Combrinck Jibran Khaliq Islam Shyha Ali Kilic Ahmed H. Hassanin |
| Affiliation: | 1. Center of Smart Materials Nanotechnology and Photonics (CSMNP), SmartCI Research Center, Alexandria University, Alexandria, Egypt;2. Center of Smart Materials Nanotechnology and Photonics (CSMNP), SmartCI Research Center, Alexandria University, Alexandria, Egypt Department of Engineering Mathematics and Physics, Faculty of Engineering, Alexandria University, Alexandria, Egypt USTAR Bio innovations Center, Faculty of Science, Utah State University, Logan, Utah, USA Kuwait College of Science and Technology (KCST), Doha, Kuwait;3. Kuwait College of Science and Technology (KCST), Doha, Kuwait;4. Center of Smart Materials Nanotechnology and Photonics (CSMNP), SmartCI Research Center, Alexandria University, Alexandria, Egypt Department of Engineering Mathematics and Physics, Faculty of Engineering, Alexandria University, Alexandria, Egypt Kuwait College of Science and Technology (KCST), Doha, Kuwait;5. School of Engineering and the Built Environment, Edinburgh Napier University, Edinburgh, UK;6. Department of Mechanical and Construction Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne, UK;7. TEMAG Labs, Textile Technology and Design Faculty, Istanbul Technical University, Istanbul, Turkey |
| Abstract: | Solution blow spinning (SBS) technique can produce nanofibers (NFs) mat in large-scale production. In this work, the SBS was used to fabricate piezoelectric polyvinylidene fluoride (PVDF) NF membranes that can be utilized for energy harvesting applications. The effect of operating air pressure from (2–5 bar) on the surface morphology of the NFs has been studied. The structural analysis for crystalline polymorph β-phase for PVDF powder, casted film, electrospinning and SBS NFs has also been presented with the aid of Fourier-transform infrared spectroscopy and X-ray diffraction (XRD). Piezoelectric characteristics of PVDF NFs mats were tested by applying impact impulse with different weights from different heights between 1 and 10 cm. The sensitivity of the voltage response increased from 1.71 mV/g to 8.98 mV/g, respectively. Besides, the SBS generated PVDF mat is found to be sensitive to pressure forces in a range of few Newtons with the generated voltage according to detected sensitivity of 80 mV/N based on the analysis of the impact of a few Hertz mechanical vibrations. In addition, the produced SBS NFs were applied as an acoustic signal detector within different acoustic frequencies. The results suggest that the β-phase PVDF nanofibrous membrane produced via the SBS technique has a great potential to be used as a piezoelectric sensor. |
| Keywords: | elastomers membranes sensors and actuators |