Tailoring the hydraulic impedance of out-of-plane micromachined electrospray sources with integrated electrodes

R. Krpoun; K. L. Smith; J. P W Stark; H. R. Shea

doi:10.1063/1.3117191

Tailoring the hydraulic impedance of out-of-plane micromachined electrospray sources with integrated electrodes

R. Krpoun
, K. L. Smith
, J. P W Stark
, H. R. Shea

Research output: Contribution to journal › Article › peer-review

Abstract

Hydraulic impedance is a critical parameter for the operation of electrospray emitters, and for preventing flooding when spraying from arrays of emitters. Controlling flow rate by tuning the flow impedance allows accessing different operating modes, such as droplet, ionic, or pulsating. We report on a method to tailor the hydraulic impedance of micromachined capillary out-of-plane emitters with integrated extractor electrodes by filling them with silica microspheres. Spraying the ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate (EMI-BF4), we demonstrate the ability to tune from droplet emission to pure ion emission depending on microbead diameter, obtaining stable emission from single emitters and from arrays of 19 emitters. © 2009 American Institute of Physics.

Original language	English
Article number	163502
Journal	Applied Physics Letters
Volume	94
Issue number	16
DOIs	https://doi.org/10.1063/1.3117191
Publication status	Published - 2009

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10.1063/1.3117191

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@article{b96ee938267d4a8b8da84f0cb856221f,

title = "Tailoring the hydraulic impedance of out-of-plane micromachined electrospray sources with integrated electrodes",

abstract = "Hydraulic impedance is a critical parameter for the operation of electrospray emitters, and for preventing flooding when spraying from arrays of emitters. Controlling flow rate by tuning the flow impedance allows accessing different operating modes, such as droplet, ionic, or pulsating. We report on a method to tailor the hydraulic impedance of micromachined capillary out-of-plane emitters with integrated extractor electrodes by filling them with silica microspheres. Spraying the ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate (EMI-BF4), we demonstrate the ability to tune from droplet emission to pure ion emission depending on microbead diameter, obtaining stable emission from single emitters and from arrays of 19 emitters. {\textcopyright} 2009 American Institute of Physics.",

author = "R. Krpoun and Smith, \{K. L.\} and Stark, \{J. P W\} and Shea, \{H. R.\}",

year = "2009",

doi = "10.1063/1.3117191",

language = "English",

volume = "94",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "16",

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T1 - Tailoring the hydraulic impedance of out-of-plane micromachined electrospray sources with integrated electrodes

AU - Krpoun, R.

AU - Smith, K. L.

AU - Stark, J. P W

AU - Shea, H. R.

PY - 2009

Y1 - 2009

N2 - Hydraulic impedance is a critical parameter for the operation of electrospray emitters, and for preventing flooding when spraying from arrays of emitters. Controlling flow rate by tuning the flow impedance allows accessing different operating modes, such as droplet, ionic, or pulsating. We report on a method to tailor the hydraulic impedance of micromachined capillary out-of-plane emitters with integrated extractor electrodes by filling them with silica microspheres. Spraying the ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate (EMI-BF4), we demonstrate the ability to tune from droplet emission to pure ion emission depending on microbead diameter, obtaining stable emission from single emitters and from arrays of 19 emitters. © 2009 American Institute of Physics.

AB - Hydraulic impedance is a critical parameter for the operation of electrospray emitters, and for preventing flooding when spraying from arrays of emitters. Controlling flow rate by tuning the flow impedance allows accessing different operating modes, such as droplet, ionic, or pulsating. We report on a method to tailor the hydraulic impedance of micromachined capillary out-of-plane emitters with integrated extractor electrodes by filling them with silica microspheres. Spraying the ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate (EMI-BF4), we demonstrate the ability to tune from droplet emission to pure ion emission depending on microbead diameter, obtaining stable emission from single emitters and from arrays of 19 emitters. © 2009 American Institute of Physics.

U2 - 10.1063/1.3117191

DO - 10.1063/1.3117191

M3 - Article

SN - 0003-6951

VL - 94

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 16

M1 - 163502

ER -

Tailoring the hydraulic impedance of out-of-plane micromachined electrospray sources with integrated electrodes

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