Piezoelectric spray for rapid fabrication of self-powered sensor based on sustainable textiles

Composites Part A Applied Science and Manufacturing, Год журнала: 2025, Номер unknown, С. 108979 - 108979

Опубликована: Апрель 1, 2025

Язык: Английский

Self‐Poled PVDF Infiltrated Nylon 11 Aerogels with Oriented Crystals for High‐Performance Piezoelectric Energy Harvesters and Self‐Powered Acoustic Sensors

Small, Год журнала: 2025, Номер unknown

Опубликована: Май 10, 2025

Abstract Efficient piezoelectric polymers with enhanced electromechanical conversion gain significant attention for energy harvesting and sensing applications. Among them, poly(vinylidene fluoride) (PVDF) odd‐nylons stand out due to their high coefficients thermal stability. However, achieving a phase preferred crystal orientation optimal performance remains challenging, particularly under mild processing conditions. In this study, vacuum‐assisted infiltration technique is introduced fabricate PVDF‐infiltrated nylon‐11 (PVDFIPA11) aerogels oriented polymer crystallites. Anisotropic aerogels, featuring aligned crystals, serve as templates PVDF vacuum. This process facilitates the formation of highly β crystals alongside γ yielding fully self‐poled system without need external poling. A nanogenerator (PENG) based on PVDFIPA11 aerogel exhibits output voltage (peak‐to‐peak) ≈45 V pp peak power density 2.2 Wm⁻ 3 significantly outperforming pristine aerogels. Additionally, PENG demonstrated self‐powered acoustic sensor, effectively distinguishing sound signals at varying pressure levels. work provides scalable practical strategy developing paving way next‐generation energy‐harvesting devices sensors.

Язык: Английский

Bubble-Triggered Piezocatalytic Generation of Hydrogen Peroxide by Copper Nanosheets-Modified Polyvinylidene Fluoride Films for Organic Pollutant Degradation and Water Disinfection

Water Research, Год журнала: 2025, Номер unknown, С. 123865 - 123865

Опубликована: Май 1, 2025

Язык: Английский