Rongguang Zhang, Xun Chen, Han Wang, Jun Zeng, Xuanzhi Zhang, Xiaojie Chen
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Study on uniformity of multi-needle electrostatic spinning by auxiliary flow field
Multi-needle electrospinning is a simple and general method for mass preparation of nanofiber membrane, which has great industrial potential. However, the bending instability produced in the electrospinning process makes that the deposition uniformity of the nanofiber is still a big concern, resulting in non-uniform nanofiber membrane, which seriously affects the application of electrospun membrane in environmental filtration, new energy and medical fields. In order to improve the uniformity of nanofiber deposition in multi-needle electrospinning, an auxiliary flow field system (AFF) is proposed, which can effectively improve the uniformity of nanofiber deposition. After image processing, the uniformity of nanofiber deposition is quantified with the index of grey distribution, and the effectiveness of this method is verified. Combined with the multi-physical field analysis, the influence mechanism of cross-wind field on the uniformity of fibre deposition was revealed. By optimizing the experimental parameters, the non-uniformity of nanofiber deposition was reduced by 49.19%. Based on multi-needle electrospinning technology, a reliable idea (AFF) and experimental basis are provided for the uniform preparation of nanofiber membrane.
期刊介绍：
Micro & Nano Letters offers express online publication of short research papers containing the latest advances in miniature and ultraminiature structures and systems. With an average of six weeks to decision, and publication online in advance of each issue, Micro & Nano Letters offers a rapid route for the international dissemination of high quality research findings from both the micro and nano communities.
Scope
Micro & Nano Letters offers express online publication of short research papers containing the latest advances in micro and nano-scale science, engineering and technology, with at least one dimension ranging from micrometers to nanometers. Micro & Nano Letters offers readers high-quality original research from both the micro and nano communities, and the materials and devices communities.
Bridging this gap between materials science and micro and nano-scale devices, Micro & Nano Letters addresses issues in the disciplines of engineering, physical, chemical, and biological science. It places particular emphasis on cross-disciplinary activities and applications.
Typical topics include:
Micro and nanostructures for the device communities
MEMS and NEMS
Modelling, simulation and realisation of micro and nanoscale structures, devices and systems, with comparisons to experimental data
Synthesis and processing
Micro and nano-photonics
Molecular machines, circuits and self-assembly
Organic and inorganic micro and nanostructures
Micro and nano-fluidics
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