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UOA 25 - General Engineering and Mineral & Mining Engineering

Queen Mary, University of London

RA1, RA2 and RA5c: Staff and output details and Category C staff circumstances

 

ALEXANDER, MS - Category : A

Research Groups:

D - Experimental Computational Fluids

RA2 - Research outputs:

Number of outputs: 4

Output number: 1 of 4

Title Pulsation Modes and the Effect of Applied Voltage on Current and Flow Rate in Nanoelectrospray
Output type: Journal article
Journal title: Anal. Chem.
Month/year of publication: April 2006
Pagination: 2658-2664
Volume: 78(8)
ISSN: 0003-2700
DOI: 10.1021/ac0520036 ?
Research group: D - Experimental Computational Fluids
Co-authors: Paine, Stark
Other relevant details: This paper detailed the discovery of new high frequency oscillatory modes of nanoelectrospray and is of great interest to a broad range of research fields including electrospray ionization mass spectrometry (ESI-MS), colloid thruster technology and application of electrospray for materials processing and the development of novel deposition and printing processes. The work has led to the filing of 2 patents relating to a novel electrostatic printing technology where the three article authors are named as inventors. The significant commercial potential of this discovery has led to the incorporation of a spin-out company Emdot to facilitate further development of the technology.

Output number: 2 of 4

Title

Electrospray Performance of Microfabricated Colloid Thruster Arrays

Output type: Journal article
Journal title: Jnl of Propulsion and Power
Month/year of publication: May 2006
Pagination: 620-627
Volume: 22(3)
ISSN: 0748-4658
DOI: Not supplied ?
Co-authors: Kent, Smith, Stark
Number of additional co-authors: 1
Other relevant details: This work forms a valuable contribution to the field of electric propulsion for micro-and small satellites. The paper represents the first published experimental study on the effect of scale-up on thruster performance by testing the operation of micro-fabricated arrays of electrospray emitters. This work was funded by EPSRC grants GR/R21936 & GR/R21943 and was done in collaboration with Rutherford Appleton Laboratories (Contact: Dr Bob Stevens, Central Microstructures Facility, RAL, Oxon. Email: r.stevens@rl.ac.uk)

Output number: 3 of 4

Title The Role of Molar Conductivity in Electrospray Cone-Jet Mode Current Scaling
Output type: Journal article
Journal title: Jnl of Applied Physics
Month/year of publication: July 2006
Pagination: 014905-1-014905-6
Volume: 100(1)
ISSN: 0021-8979
DOI: 10.1063/1.2210169 ?
Research group: D - Experimental Computational Fluids
Co-authors: Smith, Stark
Other relevant details: This paper represents an important contribution in furthering our understanding of the electrospray process and has implications in the fields of space propulsion, materials processing and deposition. This work identified the importance of solution molar conductivity on spray performance and challenges the simplicity of existing scaling laws to describe electrospray operation.

Output number: 4 of 4

Title The Sensitivity of Volumetric Flow Rate to Applied Voltage in Cone-Jet Mode Electrospray and the Influence of Solution Properties and Emitter Geometry
Output type: Journal article
Journal title: Phys Fluids
Month/year of publication: September 2006
Pagination: 092104-1-092104-7
Volume: 18(9)
ISSN: 1070-6631
DOI: 10.1063/1.2354437 ?
Research group: D - Experimental Computational Fluids
Co-authors: Smith, Stark
Other relevant details: This work is of interest to the fields of spacecraft micropropulsion and materials processing. The paper presents experimental observations characterizing for the first time the dependence of electrospray flow rate on the applied extraction voltage during stable cone-jet operation and represents an important contribution to our understanding of the fundamental physical processes occurring during electrospray atomization. The work was funded by EPSRC grants GR/R21936 & GR/R21943 and has led to subsequent funding from the European Space Agency, ESTEC Contract No. ESA 20796/07/NL/CP