|1.||Nanoparticles & Nanomaterials|
Electrospun smart materials for wearable/flexible electronics
Background and Problem statement
Recent studies show that piezoelectric and triboelectric generators have provided an effective approach to generating electricity by harvesting the body’s energy. Thus, the technological realization of wearable triboelectric generators harvesting the mechanical energy induced by the activity of the human body is attractive because of their promising applications in wearable multifunctional intelligent systems.
However, the low electrical conductivity, the low electrical stability, and the low compatibility of current electronic textiles (e-textiles) and clothing restrict the comfortable and aesthetic integration of wearable generators into human clothing. Conducting polymers (polyanilin and polypyrrole) have been coated on cotton fabric by in situ oxidative polymerization. It was found that these fabrics had excellent UV-protection properties and the intact textile characteristics of the fabric coated with PPy were protected and improved, whereas the characteristics of the fabric coated with PAni were inferior. The resistance values of the cotton fabrics coated with PAni and PPy were found to be 350 and 512 Ω, respectively, whereas the bare fabric had a resistance value higher than 109 Ω. The average electromagnetic shielding efficiency and average absorption values of the cotton fabrics coated with PAni, PPy, and bare fabric were determined to be 3.8 dB and 48%, 6 dB and 50%, 0.26 dB and 2%, respectively.
Methods and Approach
Research Project: Electrospun smart materials for wearable/flexible electronics