Electric field and spraying characteristics of electrospray using concave ground electrode

Gan, Yong; Chen, Ningguang; Zheng, Xiaoyan; Shi, Dunfeng; Jiang, Zhe; Song, Shuran; Shi, Yanling

doi:10.1016/j.elstat.2021.103662

Cited by 9 publications

(2 citation statements)

References 37 publications

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“…[ 61,129–139 ] The acoustics‐based FBMM includes ejection, acoustophoretic, and vibrating. [ 48,55,147–165 ] The electrodynamics‐based FBMM includes electrospray, [ 51,166–211 ] electrohydrodynamic (EHD) inkjet printing, [ 53,165,212–232 ] and electrospinning. [ …”

Section: Free‐boundary Microfluidic Manufacturingmentioning

confidence: 99%

Free‐Boundary Microfluidic Platform for Advanced Materials Manufacturing and Applications

Zhu,

Chen,

Huang

et al. 2023

Advanced Materials

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Microfluidics, with its remarkable capacity to manipulate fluids and droplets at the microscale, has emerged as a powerful platform in numerous fields. In contrast to conventional closed microchannel microfluidic systems, free‐boundary microfluidic manufacturing (FBMM) processes continuous precursor fluids into jets or droplets in a relatively spacious environment. FBMM is highly regarded for its superior flexibility, stability, economy, usability, and versatility in the manufacturing of advanced materials and architectures. In this review, a comprehensive overview of recent advancements in FBMM is provided, encompassing technical principles, advanced material manufacturing, and their applications. FBMM is categorized based on the foundational mechanisms, primarily comprising hydrodynamics, interface effects, acoustics, and electrohydrodynamic. The processes and mechanisms of fluid manipulation are thoroughly discussed. Additionally, the manufacturing of advanced materials in various dimensions ranging from zero‐dimensional to three‐dimensional, as well as their diverse applications in material science, biomedical engineering, and engineering are presented. Finally, current progress is summarized and future challenges are prospected. Overall, this review highlights the significant potential of FBMM as a powerful tool for advanced materials manufacturing and its wide‐ranging applications.This article is protected by copyright. All rights reserved

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Section: Free‐boundary Microfluidic Manufacturingmentioning

confidence: 99%

Free‐Boundary Microfluidic Platform for Advanced Materials Manufacturing and Applications

Zhu,

Chen,

Huang

et al. 2023

Advanced Materials

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show abstract

“…In 2008, Zhou et al [19] claimed the interference strength is closely related to the pitch between adjacent needle tips, and smaller pitch could lead to stronger interference and poorer fiber quality. However, most research are focusing on needle configurations currently, and there are only a few studies on flow rate control, which is determining the efficiency and productivity in electrospinning process [20,21].…”

Section: Introductionmentioning

confidence: 99%

RSM to Explore the Influence Mechanism of Process Configuration and Fiber Diameter in a New Multi-needle Spinneret Electrospinning

Jiang,

Chen,

Wang

et al. 2024

Preprint

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Nowadays, Multi-needle electrospinning has used to be an efficient method for producing nanofiber membranes. But in the process, the fluctuation errors in electrospinning fluid flow rate have directly influence the membrane quality, which bringing instability and still have not been solved yet. For finding out the solution to the inaccurate flow control in multi-needle, it is necessary to develop a multi-stage flow runner spinneret for large-scale production of nanofiber membrane. At first, the paper uses the finite element software COMSOL to numerically simulate the polymer flow in the runner of spinneret. Based on it, the velocity field distribution curve was draw and the velocity instability coefficient of the polymer flow was attained, which are providing theoretical guidance for the optimal design of spinneret. Next, the response surface analysis method (RSM) was used to establish a regression model between the average diameter of the nanofiber membrane and the process parameters. Then, above regression model used to perform variance data processing between the average diameter and the process parameter configuration. After that, the 2D and 3D response surface profiles and the significance analysis were completed. Finally, the stability of the nanofibers production was improved, which attained the optimal adjustment of process configuration in multi-needle electrospinning.

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Electrospray Deposition for Electronic Thin Films on 3D Freeform Surfaces: From Mechanisms to Applications

Lai,

Di,

Zhao

et al. 2024

Adv Materials Technologies

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Electronic thin films play a ubiquitous role in microelectronic devices and especially hold great promise for flexible electronics, energy conversion and storage, and biomedical applications. Their characterizations, including ultra‐thin, large‐scale dimensions, stretchability, and conformal ability to curved or 3D structures, present new challenges for thin film fabrication based on the solution method. Electrospray deposition emerges as a feasible method for fabricating large‐area, flexible, and curved films. It offers many advantages such as material adaptability, controlled atomization, tunable film morphology, and shape retention on complex substrates. These advantages make it a key method for fabricating high‐performance films on large‐area, 3D surfaces. This work presents a comprehensive review of the mechanisms, processes, applications, and equipment of electrospray deposition. First, the fundamental principles of electrospray deposition are introduced, focusing on the mechanisms and scaling laws of liquid atomization. Moreover, the control methods for electrospray modes, structures, and film morphology are discussed. These advanced control methods pave the way for the fabrication of smart skins, wearable devices, and energy conversion and storage components. Finally, this work introduces three types of electrospray deposition manufacturing equipment to illustrate the advantages of electrospray deposition for large‐area, and 3D surface manufacturing.

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Electric field and spraying characteristics of electrospray using concave ground electrode

Cited by 9 publications

References 37 publications

Free‐Boundary Microfluidic Platform for Advanced Materials Manufacturing and Applications

Free‐Boundary Microfluidic Platform for Advanced Materials Manufacturing and Applications

RSM to Explore the Influence Mechanism of Process Configuration and Fiber Diameter in a New Multi-needle Spinneret Electrospinning

Electrospray Deposition for Electronic Thin Films on 3D Freeform Surfaces: From Mechanisms to Applications

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