Control and improvement of jet stability by monitoring liquid meniscus in electrospray and electrohydrodynamic jet

Nguyen, Trung Kiên; Nguyen, Vu Dat; Seong, Baekhoon; Hoang, Nguyen Quang; Park, Jungkeun; Byun, Doyoung

doi:10.1016/j.jaerosci.2014.01.004

Cited by 43 publications

(21 citation statements)

References 18 publications

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“…These include some early works from Basaran's group, [17][18][19][20] and from Hayati et al who studied the mechanism of EHD spraying. 21 More recent works deal with other specific topics such as the effects of bulk charges and relaxation time on arc electrospraying, 22 the scaling laws for the disintegration of electrified drops, 23 the characterization and optimization of experimental parameters in jetting performance, [24][25][26][27] the oscillations of water droplets on insulating surfaces, 28 the EHD response of low-conductivity pendant drops to a step change in the electric field, 29 the liquid meniscus oscillations and tip streaming under continuous and pulsed voltages, [30][31][32] the development of a multi-nozzle EHD device, 33 the investigation on the regimes of water-oil interface, 34 numerical simulation of cone-jet formation in electrostatic spray, 35 and the stability of liquid bridges between two opposite Taylor cones. 36 However, the most studied configuration is that used in EHD inkjet devices where an electric field is established between a source nozzle and an extractor electrode.…”

mentioning

confidence: 99%

Investigation on cone jetting regimes of liquid droplets subjected to pyroelectric fields induced by laser blasts

Gennari

Battista

Sliwa

et al. 2015

Applied Physics Letters

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Electrical conductivity and viscosity play a major role in the tip jetting behaviour of liquids subjected to electrohydrodynamic (EHD) forces, thus influencing significantly the printing performance. Recently, we developed a nozzle-and electrode-free pyro-EHD system as a versatile alternative to conventional EHD configurations and we demonstrated different applications, including inkjet printing and three-dimensional lithography. However, only dielectric fluids have been used in all of those applications. Here, we present an experimental characterization of the pyro-EHD jetting regimes, induced by laser blasts, of sessile drops in case of dielectric and conductive liquids in order to extend the applicability of the system to a wider variety of fields including biochemistry and biotechnology where conductive aqueous solutions are typically used.

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mentioning

confidence: 99%

Investigation on cone jetting regimes of liquid droplets subjected to pyroelectric fields induced by laser blasts

Gennari

Battista

Sliwa

et al. 2015

Applied Physics Letters

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“…If the flow rate changes to a value lower than expected, the feedback system could effectively alter the voltage, thus rectifying the issue. In fact, such a system has been demonstrated by Kien Nguyen et al [ 53 ] Alternatively, a cooling system could be used to maintain the stability of the surface tension of the material during printing. A cooling system for instance can be used to control the substrate temperature to limit wetting.…”

Section: Ink Considerations For Ehd Printingmentioning

confidence: 99%

Electrohydrodynamic Jet Printing: Introductory Concepts and Considerations

Mkhize

Bhaskaran

2021

Small Science

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Electrohydrodynamic (EHD) jet printing is an emerging technique in the field of additive manufacturing. Due to its versatility in the inks it can print, and most importantly, the printing resolution it can achieve, it is rapidly gaining favor for application in the manufacture of electronic devices, sensors, and displays among others. Although it is an affordable and accessible manufacturing process, it does require excellent operational understanding to achieve high resolution printing of up to 50 nm as reported in literature. In this review, three main aspects are considered, namely, the ink properties, the printer system itself (including design, nozzle dimensions, applied potential, and others), and the substrate onto which printing is being carried out. Knowing how all these factors can be manipulated and brought together allows the users of EHD printing to achieve extraordinary resolution and consistent results. The review is concluded with a brief discussion on where one can see the potential for development in this field of research.

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“…The most critical ones include electric field properties (applied voltage, distance, and shape of electrodes) [44][45][46][47][48], physicochemical properties (conductivity, viscosity, surface tension) [49][50][51][52][53], and the flow rate of the supplied liquid [54]. Furthermore, the properties of a meniscus at the emitter end [55,56] and the electrostatic repulsive forces between droplets generated by a single emitter [57][58][59][60][61][62] or multiple emitters [63,64] have been identified as important parameters affecting the characteristics of the aerosol plume. By adjusting these parameters, several electrospray modes can be achieved:…”

Section: Introductionmentioning

confidence: 99%

Electrospray: More than just an ionization source

et al. 2020

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is a potential-driven process of liquid atomization, which is employed in the field of analytical chemistry, particularly as an ionization technique for mass spectrometric analyses of biomolecules. In this review, we demonstrate the extraordinary versatility of the electrospray by overviewing the specifics and advanced applications of ESbased processing of low molecular mass compounds, biomolecules, polymers, nanoparticles, and cells. Thus, under suitable experimental conditions, ES can be used as a powerful tool for highly controlled deposition of homogeneous films or various patterns, which may sometimes even be organized into 3D structures. We also emphasize its capacity to produce composite materials including encapsulation systems and polymeric fibers. Further, we present several other, less common ES-based applications. This review provides an insight into the remarkable potential of ES, which can be very useful in the designing of innovative and unique strategies.

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Control and improvement of jet stability by monitoring liquid meniscus in electrospray and electrohydrodynamic jet

Cited by 43 publications

References 18 publications

Investigation on cone jetting regimes of liquid droplets subjected to pyroelectric fields induced by laser blasts

Investigation on cone jetting regimes of liquid droplets subjected to pyroelectric fields induced by laser blasts

Electrohydrodynamic Jet Printing: Introductory Concepts and Considerations

Electrospray: More than just an ionization source

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