The influence of geometry on the flow rate sensitivity to applied voltage within cone-jet mode electrospray
The influence of geometry on the flow rate sensitivity to applied voltage within cone-jet mode electrospray
This work investigates in greater detail than in previous studies the effect of geometry on the relationship between emitted flow rate and applied potential difference in cone-jet mode electrospray systems. The magnitude of the flow rate to voltage relationship is demonstrated to be sensitive to many different geometric parameters. An explanation of this variation is offered; it is demonstrated that in the cone-jet mode of operation the change of flow rate with the applied extraction voltage is due to the change in electric field at the tip of the emitter. By a Finite Element Method simulation of the assumed electrostatic process the analysis is further extended to include all geometric parameters. The results outlined show the change of flow rate with applied voltage in cone-jet mode electrospray can be significant. This dependence will, under some conditions, have a considerable effect on the electrospray flow rate, and consequently current and droplet size. This has implications on electrospray applications involving the use of the applied voltage to extract the sprayed solution, including nano-electrospray mass spectrometry techniques and some forms of electrospinning.
1-7
Ryan, Charles
3627e47b-01b8-4ddb-b248-4243aad1f872
Smith, Katherine
9093b9f6-16a3-4d4d-8361-a8be37e4fe2d
Stark, John
cf8da964-ba02-4d93-b9d6-096fba5a31ab
Ryan, Charles
3627e47b-01b8-4ddb-b248-4243aad1f872
Smith, Katherine
9093b9f6-16a3-4d4d-8361-a8be37e4fe2d
Stark, John
cf8da964-ba02-4d93-b9d6-096fba5a31ab
Ryan, Charles, Smith, Katherine and Stark, John
(2012)
The influence of geometry on the flow rate sensitivity to applied voltage within cone-jet mode electrospray.
Journal of Applied Physics, 112 (11), .
(doi:10.1063/1.4768451).
Abstract
This work investigates in greater detail than in previous studies the effect of geometry on the relationship between emitted flow rate and applied potential difference in cone-jet mode electrospray systems. The magnitude of the flow rate to voltage relationship is demonstrated to be sensitive to many different geometric parameters. An explanation of this variation is offered; it is demonstrated that in the cone-jet mode of operation the change of flow rate with the applied extraction voltage is due to the change in electric field at the tip of the emitter. By a Finite Element Method simulation of the assumed electrostatic process the analysis is further extended to include all geometric parameters. The results outlined show the change of flow rate with applied voltage in cone-jet mode electrospray can be significant. This dependence will, under some conditions, have a considerable effect on the electrospray flow rate, and consequently current and droplet size. This has implications on electrospray applications involving the use of the applied voltage to extract the sprayed solution, including nano-electrospray mass spectrometry techniques and some forms of electrospinning.
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Accepted/In Press date: 6 November 2012
e-pub ahead of print date: 10 December 2012
Organisations:
Astronautics Group
Identifiers
Local EPrints ID: 384335
URI: http://eprints.soton.ac.uk/id/eprint/384335
ISSN: 0021-8979
PURE UUID: 4918437b-33a5-4aab-9729-2cbf1d566f36
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Date deposited: 11 Dec 2015 15:07
Last modified: 15 Mar 2024 12:46
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Author:
Katherine Smith
Author:
John Stark
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