A novel annular spinneret was developed for the needleless mass production of nanofibers. Polymer solution transported to top where multiple jets were formed when applied voltage exceeded a certain value. Electric field intensity values simulated by finite element software. Morphology, diameter and productivity nanofibers investigated changing electrospinning process parameters which concentration, voltage, collection distance flow rate. The results showed highest electric strength value at...

3D printing/bioprinting are promising techniques to fabricate scaffolds with well controlled and patient-specific structures architectures for bone tissue engineering. In this study, we developed a composite bioink consisting of silk fibroin (SF), gelatin (GEL), hyaluronic acid (HA), tricalcium phosphate (TCP) bioprinted the fibroin-based hybrid scaffolds. The dual crosslinking were further treated human platelet-rich plasma (PRP) generate PRP coated Live/Dead MTT assays demonstrated that...

In the past decades, rapid development of Internet Things (IoT) technology and artificial intelligence (AI) has driven research boom physical sensors. Material selection, structure design, performance for sensors have attracted extensive attention from worldwide researchers in field advanced manufacturing. Significant technological progress been made area applications various fields such as electronic skin, biomedicine, tissue engineering. There are many methods (e.g., electrospinning,...

With the rapid development of economy and technology, intelligent wearable devices have gradually entered public life. Flexible sensors, as main component devices, been widely concerned. However, traditional flexible sensors need an external power supply, lacking flexibility sustainable supply. In this study, structured poly(vinylidene fluoride) (PVDF)-based composite nanofiber membranes doped with different mass fractions MXene zinc oxide (ZnO) were prepared by electrospinning then...

Reasonable structural design of the spinneret plays vital roles in high-quality electrospinning technology. Free-surface is among most efficient needleless techniques. However, current free-surface spinnerets have large exposed solution surface, ambiguous electric field, and poor ability stabilizing liquid. Herein, a novel mushroom shaped (mushroom-electrospinning) that has smooth cover was developed to overcome existing problems. The new setup promoted formation stable annular pre-Taylor...

Electrospinning provides a simple and convenient method to fabricate nanofibrous meshes. However, the nanofiber productivity is often limited laboratory scale, which cannot satisfy requirements of practical application. In this study, we developed novel needleless electrospinning spinneret based on double-ring slit drug-loaded contrast conventional single-needle spinneret, our needless can significantly improve due simultaneous formation multiple jets during electrospinning. Curcumin-loaded...

Needleless electrospinning technology is considered an effective way to produce nanofibrous materials on a large scale. The electric field strength and its distribution during the process play essential role in controlling diameter quality of membrane. To achieve mass production nanofibers, this study proposed design concept new type needleless spinneret with beveled tip narrow slit shape. finite element analysis software Comsol Multiphysics 6.0 was used simulate contour In performing...

The flexible strain sensors have flourished in the field of smart wearables due to their good flexibility and ease integration with textiles or human skin prospects for application. However, selected materials sensing layers are generally unfriendly environment, tensile range sensitivity also need be further improved. Therefore, preparation characteristics green, environmentally friendly, large range, high has become main focus our current research. Lignin as second most abundant green...

There is a great limitation to improving the quality and productivity of nanofibers through conventional single-needle method. Using needleless electrospinning technology generate multiple jets enhance has attracted lots interest for many years. This study develops novel linear flume spinneret fabricate nanofibers. Multiple with two rows can be formed simultaneously on surface spinneret. The solution concentration significant impact average nanofiber diameter compared applied voltage...

In the research field of functional materials, electrospinning has become one most effective methods to produce nanofiber. The traditional method often uses a hollow metal needle prepare nanofiber with minimal throughput. this paper, we used needleless technology high-throughput by using dish as spinneret. A finite element been adopted investigate electric potential and strength spinneret under different applied voltages collection distance. effects process parameters, including solution...

Electrospinning technology has attracted extensive attention in recent decades and is widely used to prepare nanofiber membranes from hundreds of polymers. Polyvinyl formal acetal (PVFA), as a polymer with excellent properties such high strength heat resistance, not reported on the electrospun water treatment membrane. In this paper, preparation process PVFA membrane optimized, effect sodium chloride (NaCl) addition physical mechanical microfiltration performance also explored. And...

Abstract Silk fibroin (SF) is a biodegradable protein and possesses superior skin‐friendliness, biocompatibility, low immunogenicity, non‐toxicity. However, SF has series of drawbacks. For example, the application in water filtration limited by its inadequate ability to adsorb heavy metal ions. It not inherently antibacterial, making ineffective as filter eliminate airborne bacteria. without conductivity suitable for use sensors triboelectric nanogenerators. In tissue engineering, deficient...

ABSTRACT Needleless electrospinning technology was an effective processing method which can fabricate large scale nanofibers. We first developed a novel double rings slit spinneret to overcome the shortcomings of current needleless spinnerets. The solution flow rate controlled accurately by peristaltic control pump. Response surface methodology adopted investigate influence parameters on morphology and diameter main spinning comprised concentration, applied voltage, collection distance rate....

Flexible tactile sensors have promising applications at the field of intelligent robotics. However, manufacturing flexible with excellent stability and high sensitivity remain a great challenge. In present work, polyvinylidene fluoride (PVDF)-based nanofibers are prepared by electrospinning loaded Fe3O4 nanoparticles (NPs). X-ray diffraction (XRD) attenuated total reflection Fourier transform infrared spectroscope (ATR-FTIR) results indicate that addition NPs promotes generation...

A microclimate with ventilation and proper wettability near the wound is vital for healing. In case of pressure or absorption large amounts exudate, maintaining air circulation around currently a challenge dressings. this study, novel self-pumping dressing (FAED) multiple liquid transport channels designed by combining 3D spacer fabric, sodium alginate aerogel, electrospun membrane. This unique structural design allows FAED to unidirectionally rapidly remove excess biofluid from transfer it...