Piezoelectric polymers are promising energy materials for wearable and implantable applications replacing bulky batteries in small flexible electronics. Therefore, many research studies focused on understanding the behavior of at a molecular level designing new polymer-based generators using polyvinylidene fluoride (PVDF). In this work, we investigated influence voltage polarity ambient relative humidity electrospinning PVDF energy-harvesting applications. A multitechnique approach combining...

Wettability of electrospun fibers is one the key parameters in biomedical and filtration industry. Within this comprehensive study contact angles on three-dimensional (3D) meshes made films, from seven types polymers, we clearly indicated importance roughness analysis. Surface chemistry was analyzed with X-ray photoelectron microscopy (XPS) it showed no significant difference between confirming that hydrophobic properties surfaces can be enhanced by just without any chemical treatment. The...

Surface potential of biomaterials is a key factor regulating cell responses, driving their adhesion and signaling in tissue regeneration. In this study we compared the surface zeta smooth porous electrospun polycaprolactone (PCL) fibers, as well PCL films, to evaluate significance bone The ' fibers was controlled by applying positive negative voltage polarities during electrospinning. properties different films were measured using X-ray photoelectron spectroscopy (XPS) Kelvin probe force...

This study represents the unique analysis of electrospun scaffolds with controlled and stable surface potential without any additional biochemical modifications for bone tissue regeneration. We polyvinylidene fluoride (PVDF) fibers applied positive negative voltage polarities during electrospinning, to obtain two types PVDF(+) and, PVDF(−). The cells' attachments PVDF were imaged in great details advanced scanning electron microscopy (SEM) 3D tomography based on focus ion beam (FIB-SEM)....

Triboelectric generators are excellent candidates for smart textiles applications due to their ability convert mechanical energy into electrical energy. Such devices can be manufactured yarns by coating a conductive core with triboelectric material, but current lack the durability and washing resistance required textile-based applications. In this work, we develop unique yarn comprising conducting carbon nanotube (CNT) electrode coated poly(vinylidene fluoride) (PVDF) fibers deposited...

Access to clean water is a global challenge, and fog collectors are promising solution. Polycarbonate (PC) fibers have been used in but with limited efficiency. In this study, we show that controlling voltage polarity humidity during the electrospinning of PC improves their surface properties for collection capability. We experimentally measured effect both morphology chemistry fiber on potential mechanical relation efficiency from fog. produced at high negative superior rate combined...

The effect of the surface potential biomaterials on cell attachment and development in regenerative medicine is still an unexplored area driving many regeneration processes, especially piezoelectric bone tissue. Within this study, we electrospun poly(l-lactide) scaffolds constructed fibers with either higher (−600 mV) or lower (−300 potential, which controlled by applied voltage polarity during their production. Interestingly, way, performance PLLA can be enhanced. direct measurement fiber...

The pressing issues of the energy crisis and rapid electronics development have sparked a growing interest in production highly thermally conductive polymer composites. Due to challenges related poor processability hybrid materials filler distribution achieve high thermal conductivity, electrospinning is employed create composite nanofibers yarns using polyimide (PI) silicon nitride (SiN) nanoparticles. performance individual evaluated scanning microscopy (SThM), providing significant...

Given global water scarcity and the quest for sustainable energy, there's a pressing need integrated approaches addressing water‐energy interdependence worldwide. A practical approach this challenge involves implementation of fog collectors. Herein, polyvinylidene fluoride (PVDF) multifunctional device capable harvesting electricity from wind is developed tested, collecting up to 365 mg cm −2 h −1 water. Due piezoelectric nature electrospun PVDF, these yarns meshes not only serve as sensors,...

People worldwide suffer from poor access to water, with more than 3 billion lacking basic handwashing facilities and 2 without water services at their homes. This global problem needs new, cost-effective efficient solutions that can be employed in places scarce sources. One potential sustainable solution is fog collection, inspired by the way nature harvests humid air via condensation processes or fog. Currently, a common medium collect highest collection efficiency Raschel mesh. By...

Water resources are shrinking year by year, and fog water collectors (FWCs) already being used in humid regions, where populations have limited access to traditional resources. The aim of this study was use electrospun fibers as FWCs collect water. Two polymers with different wetting mechanical properties were successfully combined create a Janus structure from hydrophobic polystyrene (PS) hydrophilic cellulose acetate (CA). These fibers, specially designed gutter shape, using side-nozzle...

The medical field is continuously seeking new solutions and materials, where cellulose materials due to their high biocompatibility have great potential. Here we investigate the applicability of acetate (CA) electrospun fibers for bone tissue regeneration. For first time show piezoelectric properties CA via voltage switching spectroscopy piezoresponse force microscopy (HVSS-PFM) tests, which are followed by surface potential studies using Kelvin probe (KPFM) zeta measurements. Piezoelectric...

Nanofibrous materials generated through electrospinning have gained significant attention in tissue regeneration, particularly the domain of bone reconstruction. There is high interest designing a material resembling tissue, and many scientists are trying to create applicable engineering with piezoelectricity similar bone. One prospective candidates highly piezoelectric poly(vinylidene fluoride) (PVDF), which was used for fibrous scaffold formation by electrospinning. In this study, we...

Abstract A single‐step electrospinning approach enables controlling surface potential of fibers by changing voltage polarities during scaffolds production to enhance cells biointegration. This innovative and facile way regulates the interfacial properties adhesion filopodia formation on fibrous tissue for possible bone regeneration. Tuning chemistry polycaprolactone (PCL) altering polarity allows double up 145 mV, which is directly measured using Kelvin probe force microscopy. The obtained...

Electric field strength and polarity in electrospinning processes their effect on process dynamics the physical properties of as-spun fibers is studied. Using a solution neutral polymer such as poly(methyl methacrylate) (PMMA) we explored electrospun jet motion issued from Taylor cone. We focused straight section up to incipient stage bending instability radius disk deposited collecting electrode. A new correlation formula using dimensionless parameters was found, characterizing electric...

Atopic dermatitis (eczema) is a widespread disorder, with researchers constantly looking for more efficacious treatments. Natural oils are reported to be an effective therapy dry skin, and medical textiles can used as alternative or supporting therapy. In this study, fibrous membranes from poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) (PVB) low high molecular weights were manufactured obtain nano- micrometer fibers via electrospinning the designed patches oil carriers atopic skin...

The global water supply worsens yearly with climate change; therefore, the need for sustainable resources is growing. One of them fog collectors variable surface wettability, multifunctional designs utilization worldwide and to address regions low humidity levels. Therefore, we created fiber meshes a photoresponsive switchable surface. This study uses electrospun polyvinylidene fluoride (PVDF) meshes, whose wettability controlled by adding TiO2. collection performance studied at high With...

Abstract The global climate change is mainly caused by carbon dioxide (CO 2 ) emissions. To help reduce CO emissions and conserve thermal energy, sustainable materials based on flexible insulation are developed to minimize heat flux, drawing inspiration from natural systems such as polar bear hairs. unique structure of hollow double‐shell fibers makes it possible achieve low conductivity in the material while retaining exceptional elasticity, allowing adapt any shape. layered system porous...

The urgent challenges posed by the energy crisis, alongside heat dissipation of advanced electronics, have embarked on a rising demand for development highly thermally conductive polymer composites. Electrospun composite mats, known their flexibility, permeability, high concentration and orientational degree fillers, stand out as one prime candidates addressing this need. This study explores efficacy boron nitride (BN) its potential alternative, silicon (SiN) nanoparticles, in enhancing...

Abstract Thermal energy storage is a promising, sustainable solution for challenging management issues. We deploy the fabrication of reduced graphene oxide (rGO)–polycarbonate (PC) as shell and polyethylene glycol (PEG) core to obtain hydrophobic phase change electrospun core–shell fiber system low-temperature thermal application. The encapsulation ratio PEG controlled by controlling flow rate, ~ 93% heat efficacy apparent 1.5 mlh −1 rate. Moreover, prepared possesses maximum latent melting...

Tissue engineering requires properly selected geometry and surface properties of the scaffold, to promote in vitro tissue growth. In this study, we obtained three types electrospun poly(methyl methacrylate) (PMMA) scaffolds-nanofibers, microfibers, ribbons, as well spin-coated films. Their morphology was imaged by scanning electron microscopy (SEM) characterized average roughness water contact angle. PMMA films had a smooth with roughness, Ra below 0.3 µm hydrophilic properties, whereas for...