Nanofibers with diameter below one nanometer from electrospinning

Jian, Shaoju; Zhu, Jia; Jiang, Shaohua; Chen, Shouhui; Fang, Hong; Song, Yonghai; Duan, Gaigai; Zhang, Yongfan; Hou, Haoqing

doi:10.1039/c7ra13444d

Cited by 128 publications

(57 citation statements)

References 53 publications

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“…Studies proved that the secondary surface morphology of electrospun fibers can be changed by regulating the working parameters: (I) solution parameters (e. g. polymer concentration, viscosity, molecular weight, surface tension, conductivity), (II) ambient parameters (temperature and relative humidity (RH)), and (III) processing parameters (applied voltage, flow rate, distance between the tip of the needle and the collector, diameter of the needle, and collector type including rotating collector, rotating frozen mandrel, rotating tube collector with knife‐edge electrodes, parallel electrodes, disk collector, rotating wire collector, patterned electrodes, parallel rings, microfiber assisted rotating collector, and liquid bath collector (Figure ). Furthermore, maneuvering the electrospinning apparatus can also affect the secondary surface morphology of fibers.…”

Section: Basic Principles About the Electrospinning Processmentioning

confidence: 99%

A Review on the Secondary Surface Morphology of Electrospun Nanofibers: Formation Mechanisms, Characterizations, and Applications

2020

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Engineering the secondary surface morphology of fibers (fibers without smooth surface and solid interior) has been attracting significant awareness in various areas and applications. Among different methods of forming nanofibers, electrospinning is the most widely adopted technique due to the ease of forming fibers with a broad range of properties and its unique advantages such as the flexibility to spin into a variety of shapes and sizes as well as adjustable porosity of electrospun structures. In this review paper, more emphasis is put on the secondary surface morphology. A comprehensive overview of the basic principles about the electrospinning process, types of electrospinning, materials, formation mechanisms, characterizations, and applications of electrospun fibers with the secondary surface morphology (e. g. the porous structure, grooved structure, wrinkled structure, rough structure, cactus structure, and hollow structure) are discussed in detail. Importantly, we believe our work can serve as guidelines for the preparations, characterizations, and applications of electrospun fibers with the secondary surface morphology.

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Section: Basic Principles About the Electrospinning Processmentioning

confidence: 99%

A Review on the Secondary Surface Morphology of Electrospun Nanofibers: Formation Mechanisms, Characterizations, and Applications

2020

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“…Research pertaining to electrospinning has gained significant traction in recent years, as it provides a versatile and viable tools for generating various matrices in a continuous process and with uniform pore sizes, where the fiber diameters are adjusted from nanometers to sub-microns [ 40 , 123 , 124 ]. ESNFs with diameters lower than 1 nm (subnanometers) have also been recently reported [ 125 , 126 ]. Although, there are several analogous nanofiber production methods such as nanolithography, self-assembly, melt fibrillation, drawing and template synthesis, electrospinning combines simplicity, low cost and versatility with superior capabilities to manufacture high quality nanofibers with diverse and controlled morphologies and complex nanofibrous assemblies [ 127 – 129 ].…”

Section: Electrospun Nanofibers Containing Gnmsmentioning

confidence: 99%

Graphene impregnated electrospun nanofiber sensing materials: a comprehensive overview on bridging laboratory set-up to industry

2020

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Owing to the unique structural characteristics as well as outstanding physio-chemical and electrical properties, graphene enables significant enhancement with the performance of electrospun nanofibers, leading to the generation of promising applications in electrospun-mediated sensor technologies. Electrospinning is a simple, cost-effective, and versatile technique relying on electrostatic repulsion between the surface charges to continuously synthesize various scalable assemblies from a wide array of raw materials with diameters down to few nanometers. Recently, electrospun nanocomposites have emerged as promising substrates with a great potential for constructing nanoscale biosensors due to their exceptional functional characteristics such as complex pore structures, high surface area, high catalytic and electron transfer, controllable surface conformation and modification, superior electric conductivity and unique mat structure. This review comprehends graphene-based nanomaterials (GNMs) (graphene, graphene oxide (GO), reduced GO and graphene quantum dots) impregnated electrospun polymer composites for the electro-device developments, which bridges the laboratory setup to the industry. Different techniques in the base polymers (preprocessing methods) and surface modification methods (post-processing methods) to impregnate GNMs within electrospun polymer nanofibers are critically discussed. The performance and the usage as the electrochemical biosensors for the detection of wide range analytes are further elaborated. This overview catches a great interest and inspires various new opportunities across a wide range of disciplines and designs of miniaturized point-of-care devices.

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“…It is worth mentioning that the surface morphology and properties of electrospun fibers can be affected by (I) the working parameters of the electrospinning process represented by ambient parameters (relative humidity and temperature), solution parameters (polymer concentration, molecular weight, viscosity, conductivity, and surface tension), and processing parameters (flow rate, applied voltage, distance between the tip of the needle and the collector [DTC], collector type, and diameter of the needle); (II) electrospinning types; (III) composites; and (IV) postprocessing treatments …”

Section: Brief Introduction Of Electrospinningmentioning

confidence: 99%

A mini review on the generation of crimped ultrathin fibers via electrospinning: Materials, strategies, and applications

Zaarour

Zhu

Huang

et al. 2020

Polymers for Advanced Techs

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Structures modification of fibers has been attracting significant attention in various fields and applications. Among different techniques of fabricating ultrathin fibers, electrospinning is the most commonly adopted method because of the ease of forming fibers with a wide range of properties and its exceptional advantages, such as the ability to spin into different shapes and sizes, as well as the adaptable porosity of electrospun fiber webs. The crimped structure has been attracting the attention of scientific researchers owing to its unique properties (eg, spring-like behavior, supreme strain, remarkable specific surface area, good piezoelectric properties, excellent biological properties, and so on). Therefore, this study summarizes a review of the strategies and methods, reported so far, of generating electrospun crimped ultrathin fibers of various polymers. The review focuses on the polymer types, formation methods, characterizations, and applications of the electrospun crimped ultrathin fibers. We believe this work can serve as an important reference for the materials, strategies, and applications of crimped fibers.

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Nanofibers with diameter below one nanometer from electrospinning

Abstract: Super-fine nanofibers with diameter below 1 nanometer are prepared by electrospinning from ultra-dilute solutions.

Cited by 128 publications

References 53 publications

A Review on the Secondary Surface Morphology of Electrospun Nanofibers: Formation Mechanisms, Characterizations, and Applications

A Review on the Secondary Surface Morphology of Electrospun Nanofibers: Formation Mechanisms, Characterizations, and Applications

Graphene impregnated electrospun nanofiber sensing materials: a comprehensive overview on bridging laboratory set-up to industry

A mini review on the generation of crimped ultrathin fibers via electrospinning: Materials, strategies, and applications

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