Title: Nanofiber alignment tuning: An engineering design tool in fabricating wearable power harvesting devices
Journal: Journal of Industrial Textiles
Author: 1. Mohammad Sajad Sorayani Bafqi, Masoud Latifi, 2. Roohollah Bagherzadeh
Year: 2016
Address: 1. Textile Engineering Department, Textile Research and Excellence Centers, Amirkabir University of
Technology, Tehran, Iran
2. Advanced Textile Materials and Technology (ATMT) Research Institute, Textile Engineering Department,
Amirkabir University of Technology, Tehran, Iran
Abstract: Piezoelectrics are one of the most important materials used for harvesting energies.
Several piezoelectric nanostructures have been used to construct nanogenerators
(NGs). Nanofibers made by piezo-polymers, especially polyvinylidene fluoride (PVDF)
because of their high flexibility, biocompatibility, and low cost, have shown wonderful
growth as the key materials for NGs. Despite these favorable properties, fabricated
nanofibrous devices still has low efficiency and many studies have been conducted to
characterize and improve the performance of the PVDF nanofibers. Here we tried to
fabricate PVDF NG device based on align nanofibers to improve the NGs output, using
two different methods rotary collector and applying magnetic field. Characteristics of
these structures are evaluated utilizing X-ray diffraction, Fourier transform infrared,
differential scanning calorimetry, and scanning electron microscopy. Electrical response
of fabricated samples is measured through utilization of an impedance analyzer at room
temperature. Results demonstrate that crystalline structure increases in both methods
but sample fabricated by rotary collector in magnetic field has more improvement in
their outputs. This result shows that in addition to the crystalline structure, nanofibers
alignment and arrangement play important roles in piezoelectric properties of sample,
as well as NG efficiency. These results teach us to establish engineering design rules for
wearable power harvesting devices.
Keywords: Aligned nanofibers, power harvesting, piezoelectric, electrospinning
Application: Energy Harvesting
Product Model 1: Electroris
Product Model 2:
URL: http://journals.sagepub.com/doi/abs/10.1177/1528083716654471#="http://journals.sagepub.com" & "/doi/abs/10.1177/1528083716654471"#