High-aspect-ratio three-dimensional electrospinning via a tip guiding electrode

Zheng, Guo; Jiang, Jiaxin; Wang, Xiang; Li, Wenwang; Yu, Zhaojie; Liu, Lin

doi:10.1016/j.matdes.2020.109304

Cited by 27 publications

(16 citation statements)

References 45 publications

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“…The electrospinning method consists of pumping a simple or complex polymer solution through a capillary subjected to a high-voltage electric field [13,27,32]. Due to electrostatic repulsions from the Taylor cone formed at the tip of the capillary, the polymer solution travels to a collector that may have an opposite electrical charge or be grounded [42,43] (Figure 1). The jet is stretched and churned as it travels to the collector, the solvent evaporates during this process, and a solid, non-woven, fibrous matrix is deposited on the collector [44].…”

Section: Categorization and Characterization Of Electrospun Fibersmentioning

confidence: 99%

Electrospun Fibers Loaded with Natural Bioactive Compounds as a Biomedical System for Skin Burn Treatment. A Review

2021

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Burns are a major threat to public health and the economy due to their costly and laborious treatment and high susceptibility to infection. Efforts have been made recently to investigate natural bioactive compounds with potential use in wound healing. The importance lies in the capacities that these compounds could possess both in infection control by common and resistant microorganisms, as well as in the regeneration of the affected tissues, having in both cases low adverse effects. However, some bioactive molecules are chemically unstable, poorly soluble, and susceptible to oxidative degradation or have low bioavailability. Therefore, developing new technologies for an efficient treatment of wound healing poses a real challenge. In this context, electrospun nanofibers have gained increasing research interest because bioactive molecules can be easily loaded within the nanofiber, resulting in optimal burst control and enhanced drug stability. Additionally, the nanofibers can mimic the extracellular collagen matrix, providing a suitable highly porous structural support for growing cells that facilitate and accelerate skin burns healing. This review gives an overview of the current state of electrospun fibers loaded with natural bioactive compounds as a biomedical system for skin burn treatment.

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Section: Categorization and Characterization Of Electrospun Fibersmentioning

confidence: 99%

Electrospun Fibers Loaded with Natural Bioactive Compounds as a Biomedical System for Skin Burn Treatment. A Review

2021

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“…Zheng et al reported that layer-by-layer 3D nanofibril construction was achieved by a sharp-tip guiding electrode. [23] In their report, the tip electrode was placed behind the DOI: 10.1002/adem.202101740 Near-field electrospinning (NFES) holds the potential to develop into a versatile additive nanomanufacturing platform. However, the impact of a variety of processing variables remains unresolved.Herein, the effect of solvents used to prepare suitable solutions for 3D microstructuring by electrospinning is studied.…”

Section: Introductionmentioning

confidence: 99%

“…Zheng et al reported that layer‐by‐layer 3D nanofibril construction was achieved by a sharp‐tip guiding electrode. [ 23 ] In their report, the tip electrode was placed behind the collector, which guided the precise deposition of the nanofibers on the collector by enhancing the charge transfer process and weakening the electrical interference. This process resulted in 3D structures with an aspect ratio as high as 25.…”

Section: Introductionmentioning

confidence: 99%

Wall Microstructures of High Aspect Ratio Enabled by Near‐Field Electrospinning

et al. 2022

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Near‐field electrospinning (NFES) holds the potential to develop into a versatile additive nanomanufacturing platform. However, the impact of a variety of processing variables remains unresolved.Herein, the effect of solvents used to prepare suitable solutions for 3D microstructuring by electrospinning is studied. 3D straight walls of stacked fibers are fabricated using a layer‐by‐layer fiber deposition approach. The effect of the choice of substrate material is also explored. The results show that a high vapor pressure, and a low dielectric constant of the solvent, as well as a high substrate conductivity facilitate improved stacking of fiber layers. Utilizing these conditions, 3D stacked walls of polyethylene oxide are fabricated, and a maximum aspect ratio of 191.7 ± 52.6, while using a chromium/gold substrate and dichloromethane/methanol as the solvent is achieved.

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“…As an advanced manufacturing technology, electrohydrodynamic printing technology has great potential in micro-nano manufacturing due to its high resolution [1][2][3]. Printing materials with different properties have their own application areas.…”

Section: Introductionmentioning

confidence: 99%

A new electrohydrodynamic printing method for patterns fabrication with low viscosity fluid of silicone oil

Tang

Cheng

2022

Journal of Electrical Engineering

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Silicone oil is a type of fluid with low viscosity, but it is not easy to form stable cone jet for electrohydrodynamic printing. In this paper, we proposed a new electrohydrodynamic printing method for patterns fabrication with this kind of low viscosity fluid. Dots array was first printed on the substrate at higher direct current voltage. Then by controlling the moving speed of the platform, the dots were connected into lines according to the fluidity of the silicone oil and its low surface tension. With the proposed method, the patterns with silicone oil can be successfully formed by electrohydrodynamic printing. In the experiment, the influence of main parameters including applied voltage, moving speed of substrate, distance from needle to substrate, and axial length of droplet on the quality of printed lines was studied. Finally, by optimizing the printing parameters, the silicone oil lines with width of 73 µm and low surface roughness were printed.

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High-aspect-ratio three-dimensional electrospinning via a tip guiding electrode

Cited by 27 publications

References 45 publications

Electrospun Fibers Loaded with Natural Bioactive Compounds as a Biomedical System for Skin Burn Treatment. A Review

Electrospun Fibers Loaded with Natural Bioactive Compounds as a Biomedical System for Skin Burn Treatment. A Review

Wall Microstructures of High Aspect Ratio Enabled by Near‐Field Electrospinning

A new electrohydrodynamic printing method for patterns fabrication with low viscosity fluid of silicone oil

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