Ballpoint pen tips as robust cone-jet electrospray emitters

Li, Cheng; Chang, M.R.; Yang, Weiwei; Madden, A. J.; Deng, Weiwei

doi:10.1016/j.jaerosci.2014.06.004

Cited by 16 publications

(7 citation statements)

References 16 publications

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“…Controlling the electric field near the nozzle tip could significantly increase the voltage range of cone-jet stability and alter the angle of the spray plume as well27. A number of efforts on changing the specifications of the nozzle for having more control on the cone-jet mode is reported, utilizing a ballpoint pen28, carbon fiber29 and externally wetted emitters30.…”

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confidence: 99%

A Very Stable High Throughput Taylor Cone-jet in Electrohydrodynamics

Morad

Rajabi

Razavi

et al. 2016

Sci Rep

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A stable capillary liquid jet formed by an electric field is an important physical phenomenon for formation of controllable small droplets, power generation and chemical reactions, printing and patterning, and chemical-biological investigations. In electrohydrodynamics, the well-known Taylor cone-jet has a stability margin within a certain range of the liquid flow rate (Q) and the applied voltage (V). Here, we introduce a simple mechanism to greatly extend the Taylor cone-jet stability margin and produce a very high throughput. For an ethanol cone-jet emitting from a simple nozzle, the stability margin is obtained within 1 kV for low flow rates, decaying with flow rate up to 2 ml/h. By installing a hemispherical cap above the nozzle, we demonstrate that the stability margin could increase to 5 kV for low flow rates, decaying to zero for a maximum flow rate of 65 ml/h. The governing borders of stability margins are discussed and obtained for three other liquids: methanol, 1-propanol and 1-butanol. For a gravity-directed nozzle, the produced cone-jet is more stable against perturbations and the axis of the spray remains in the same direction through the whole stability margin, unlike the cone-jet of conventional simple nozzles.

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confidence: 99%

A Very Stable High Throughput Taylor Cone-jet in Electrohydrodynamics

Morad

Rajabi

Razavi

et al. 2016

Sci Rep

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“…These can be categorized into those modifying the applied electric field (Martin et al, 2012;Park et al, 2004) and the emitter geometry. In this latter case, use has been made of carbon fiber emitters (Sen et al, 2006), ballpoint pen nozzles (Li et al, 2014) or hemispherical caps (Morad et al, 2016).…”

Section: B Minimum Flow Ratementioning

confidence: 99%

Dripping, jetting and tip streaming

Montanero¹,

Gañán‐Calvo²

2019

Preprint

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“…Especially the range of emitters, which are typically constructed from stainless steel, is uniquely varied in the case of ES. In addition to stainless steel, paper platforms [11], disposable pipette tips [12], plant leaves [13], carbon fibers [14], PDMS [15], fused silica [16], ball pen [17], ferrofluid [18], and many other materials have been proved to function as emitters for ES. Moreover, multiple designs have been developed to enhance throughput [19][20][21][22][23][24][25] or to neutralize the charges of droplets by using two sprays with opposite polarities [26,27].…”

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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Ballpoint pen tips as robust cone-jet electrospray emitters

Cited by 16 publications

References 16 publications

A Very Stable High Throughput Taylor Cone-jet in Electrohydrodynamics

A Very Stable High Throughput Taylor Cone-jet in Electrohydrodynamics

Dripping, jetting and tip streaming

Electrospray: More than just an ionization source

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