Integration of Electrohydrodynamic Printing and Hydroprinting for the Cost‐Effective Fabrication of Microscale Conformal Transparent Electrodes on Diverse Curved Surfaces

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 16, 2025

Abstract Hydroprinting has emerged as a cost‐effective solution to transfer planar flexible electronics onto diverse curved surfaces for the fabrication of conformal transparent electrodes (CTEs) in fields microelectronics and healthcare monitoring. However, current hydroprinting strategies commonly rely on intricate multiple‐step microfabrication processes or inkjet/direct/screen printing, largely limiting accessibility resolution microscale CTEs. Here, an integration strategy is proposed by combining electrohydrodynamic printing hydroprinting, simplifying CTEs with remarkable electrical/thermal/sensing capabilities robust mechanical stability. Stable silver mesh non‐conductive water‐soluble polyvinyl alcohol films achieves excellent compatibility distinct substrate materials. The smallest feature size 48.5 ± 3.7 µm, showing figure merit 1304. Interestingly, hydroprinted rough demonstrate better adhesion scratching resistances than those smooth counterparts, maintaining negligible sheet resistance increase after 100 cyclic tests. cylindrical glass bottle exhibit transparency electrothermal properties. human skin electrocardiogram sensing monitoring realize notable 30.24% signal enhancement, improved motion artifact irritation compared commercialized Ag/AgCl electrodes.

Language: Английский

Highly architectural MEW scaffolds with superior performance

Materials & Design, Journal Year: 2024, Volume and Issue: 245, P. 113290 - 113290

Published: Sept. 1, 2024

Melt electrospinning writing (MEW) combines the fundamental principles of electrospinning, a fiber forming technology, and 3D printing. The process, however, is highly complex quality fabricated structures strongly depends on interplay key printing parameter settings including processing temperature, applied voltage, collection speed, pressure. These parameters act in unison, comprising principal forces electrified jet: pushing viscous polymer out nozzle mechanically electrostatically dragging it for deposition towards collector. This article will reveal correlation between process morphology curved fibers below critical translation speed (CTS), prepare controllable scaffolds by adjusting electric field strength, which have fully interconnected pores allow cells to migrate proliferate. Furthermore, study verified advantages these through mechanical vitro culture experiments. results showed that compared with linearly printed scaffolds, exhibited better properties enhanced cell attachment proliferation.

Language: Английский

Gravity-Driven Ultrahigh-Speed Electrospinning for the Production of Ethyl Cellulose Fibers with Tunable Porosity for Oil Absorption

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 13(1), P. 507 - 517

Published: Dec. 19, 2024

Ethyl cellulose (EC) is a biocompatible, renewable, and recyclable material with diverse sources, making it an attractive candidate for industrial applications. Electrospinning has gained significant attention the production of EC fibers. However, conventional electrospinning methods face challenges such as bead formation, low yield, absence porous internal structures, limiting both functional performance scalability. This study presents optimized approach producing fibers by using gravity-driven ultrahigh-speed (GUHS-ES) system. system leverages gravity to reshape Taylor cone morphology during electrospinning, enhancing stability dramatically increasing throughput. As flow rates increase, contracts inward, while tip structure expands stabilizes, reaching maximum size at ultrahigh (100–150 mL/h). unique enables fiber rate 24.5 g/h, hundreds times greater than techniques. Another advantage GUHS-ES its ability achieve high diameter uniformity adjustable porosity. At rates, pore sizes reached 321 nm. The highly exhibited absorption capacity 56.6 110.7 their weight, exceeding most previously reported oil-absorbing materials demonstrating efficacy rapid waste oil absorption. green, efficient technology represents promising advancement large-scale application natural polymer broad implications sustainable processes.

Language: Английский