High-Resolution Electric-Field-Driven Jet 3D Printing and Applications

Zhang, Guangming; Qian, Lei; Zhao, Jibin; Zhou, Haijing; HongboLan,

doi:10.5772/intechopen.78143

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…The jet is directed towards a substrate, where the ink solidifies upon deposition, layer by layer, forming a three-dimensional structure. This process is highly controlled and can achieve high-resolution prints, finding applications in electronics and microfluidics [36,73,74]. However, it has limitations regarding material compatibility, printing speed, equipment complexity, and scaling for larger objects.…”

Section: Materials Deposition-based Micromanufacturing Techniquesmentioning

confidence: 99%

Additive manufacturing of micropatterned functional surfaces: a review

Chivate,

Zhou

2024

Int. J. Extrem. Manuf.

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Over the course of millions of years, nature has evolved to ensure survival and presents us with a myriad of functional surfaces and structures that can boast high efficiency, multifunctionality, and sustainability. What makes these surfaces particularly practical and effective is the intricate micropatterning that enables selective interactions with microstructures. Most of these structures have been realized in the laboratory environment using numerous fabrication techniques by tailoring specific surface properties. Of the available manufacturing methods, additive manufacturing (AM) has created opportunities for fabricating these structures as the complex architectures of the naturally occurring microstructures that far exceed the traditional ways. This paper presents a concise overview of the fundamentals of such patterned microstructured surfaces, their fabrication techniques, and diverse applications. A comprehensive evaluation of micro fabrication methods is conducted, delving into their respective strengths and limitations. Greater emphasis is placed on AM processes like inkjet printing and micro digital light projection printing due to the innate advantages of these processes to additively fabricate high resolution structures with high fidelity and precision. The paper explores the various advancements in these processes in relation to their use in microfabrication and also presents the recent trends in applications like the fabrication of microlens arrays, microneedles, and tissue scaffolds.

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Section: Materials Deposition-based Micromanufacturing Techniquesmentioning

confidence: 99%

Additive manufacturing of micropatterned functional surfaces: a review

Chivate,

Zhou

2024

Int. J. Extrem. Manuf.

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“…When a higher voltage was applied, an electric field was generated between the needle and electrode, resulting in the generation of a charged gallium-based liquid metal droplet whose electric charge was conserved temporarily at the interface of liquid/gas. Under the competition of the electric field force, surface tension, viscous force, and gas pressure, the meniscus was elongated gradually to form a Taylor-cone [ 64 ]. When the tangential force due to the electric field exceeded the surface tension, a droplet was generated ( Figure 2 ).…”

Section: Electric Field-driven Liquid Metal Droplet Generationmentioning

confidence: 99%

Electric Field-Driven Liquid Metal Droplet Generation and Direction Manipulation

et al. 2021

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A gallium-based liquid metal got high attention recently, due to the excellent material properties that are useful in various research areas. We report here on electric field-induced liquid metal droplet generation and falling direction manipulation. The well-analyzed electro-hydrodynamic method is a selectable way to control the liquid metal, as the liquid metal is conductive. The electric field-induced liquid metal manipulation can be affected by the flow rate (0.05~0.2 mL/min), voltage (0~7 kV), and distance (15 and 30 mm) between electrodes, which changes the volume of the electric field-induced generated liquid metal droplet and the number of the generated droplets. When the electric field intensity increases or the flow rate increases, the generated droplet volume decreases, and the number of droplets increases. With the highest voltage of 7 kV with 15 mm between electrodes at the 0.2 mL/min flow rate, the lowest volume and the largest number of the generated droplets for 10 s were ~10 nL and 541, respectively. Additionally, we controlled the direction of the generated droplet by changing the electric field. The direction of the liquid metal droplet was controlled with the maximum angle of ~12°. Moreover, we exhibited a short circuit demonstration by controlling the volume or falling direction of the generated liquid metal droplet with an applied electric field.

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Melt Electrowritten In Vitro Radial Device to Study Cell Growth and Migration

et al. 2020

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of these scenarios. [1] Migration is influenced by chemotactic, topographical, and mechanotransductive cues from the extracellular matrix. [2] Moreover, cell migration in the context of cancer metastasis is a complex and important factor for understanding tumor progression. [3] The most aggressive form of a primary brain tumor is glioblastoma multiforme (GBM) which are highly invasive heterogenous tumors with a very low survival rate. [4] Surgical resection and chemo-or radiotherapy is commonly used for patient treatment, however, tumor recurrence is very frequent. Importantly, GBM cells invade and migrate along white matter tracts and brain blood vessels which promote tumor dissemination. [5] Hence, it is critical to understand the basic process of tumor migration and progression in order to develop new therapeutic drugs and treatment regimens. While therapeutic approaches that minimize GBM migration are logical, another approach focuses on guiding these cells away from the tumor into biomaterial reservoirs with the goal to reduce tumor size. [6] This diversional approach is based on the placement of a tube filled with a matrix and oriented substrate that provides topographical guidance cues at the tumor site. This results in the attraction and guidance of migration of GBM cells into the tube, effectively reducing overall tumor size. Therefore, in line with this study and the fact that GBM cells have an affinity for white brain matter and blood vessels, it is important to develop new 3D in vitro cell culture models to determine the optimal matrix composition that drives GBM migration. Novel research methods and tools provide an opportunity to study cell migration during cancer metastasis [7] where loss of cell adhesion from the primary tumor along with increased cell motility and invasion occurs. There is evidence from 3D microfluidic devices and microchips that matrix stiffness influences the migratory and invasive capabilities of tumor cells through the structure characteristics. [8] There have been significant advances to understand the process of cell migration using in vitro models, which are cost effective and easier to use compared to in vivo studies. With existing in vitro assays, cell migration conditions are welldefined with many based on the traditional 2D cell culture methods. [9] While simple to use, they are challenged to recapitulate the 3D in vivo microenvironment.

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High-Resolution Electric-Field-Driven Jet 3D Printing and Applications

Cited by 4 publications

References 15 publications

Additive manufacturing of micropatterned functional surfaces: a review

Additive manufacturing of micropatterned functional surfaces: a review

Electric Field-Driven Liquid Metal Droplet Generation and Direction Manipulation

Melt Electrowritten In Vitro Radial Device to Study Cell Growth and Migration

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