Dr Ahmed Ismail
Lecturer in Fluid Dynamics
School of Engineering and Materials Science
Queen Mary University of London
Queen Mary University of London
Research
Electrohydrodynamics, Multiphase flows, Microfluidics, High-Speed Imaging, Encapsulation, Printing
Interests
My work focuses mainly on multiphase flow in micro-scale. This includes capillary jets, microdroplets and also electrohydrodynamics. The main objective of my research is to understand the physics in such small scale and then use this knowledge to develop different technologies . I use experimental tools such as high speed imaging, theoretical approaches such as dimensionless analysis and development of scaling laws, and numerical methods to tackle challenges that arise from industry in areas such as 2D printing, additive manufacturing and micro-encapsulation. Keywords: Electrospray, Direct Printing, Microfluidics, Drops & Bubbles, Microencapsulation, Capillary jet.Publications
2024
Liquid pinching dynamics in an inertial transitioning regimeIsmail AS and Taraki N
Physical Review Research, American Physical Society (Aps) vol. 6 (4)
01-11-2024
2022
The role of geometry on controlled cavity collapse and top jet dropIsmail A and Taraki N
Physics of Fluids, American Institute of Physics
01-07-2022
2021
Characterization of capillary waves: a review and a new optical methodSlavchov R, Peychev B and Ismail A
Physics of Fluids, Aip Publishing vol. 33 (10)
29-10-2021
A novel capsule-based smell test fabricated via coaxial drippingIsmail AS, Goodwin GR, Castrejon-Pita JR, Noyce AJ and Azevedo HS
Journal of The Royal Society Interface, The Royal Society vol. 18 (177)
28-04-2021
2019
Scaling Laws for Transition from Varicose to Whipping Instabilities in Electrohydrodynamic JettingXia HH, Ismail A, Yao J and Stark J
Physical Review Applied, American Physical Society (Aps) vol. 12 (1)
17-07-2019
2018
Breakup length of electrified liquid jets: Scaling laws and applicationsISMAIL AS, YAO J, XIA HH and STARK J
Physical Review Applied, American Physical Society
05-12-2018
Controlled Cavity Collapse: Scaling Laws of Drop FormationISMAIL AS, Ganan-Calvo A, CASTREJON PITA JR, Herreda M and Castrejon-Pita AA
Soft Matter, Royal Society of Chemistry Editors: Stebe K.
03-09-2018
2016
Effect of a Surrounding Liquid Environment on the Electrical Disruption of Pendant DropletsISMAIL A, Lopez-Herrera JM, Herrada MA, Modesto-Lopez LB and Gañán-Calvo AM
Langmuir: The Acs Journal of Surfaces and Colloids, American Chemical Society vol. 32 (27), 6815-6824.
29-06-2016
2015
Convective-to-absolute instability transition in a viscoelastic capillary jet subject to unrelaxed axial elastic tensionISMAIL A, Herrada MA, Gañán-Calvo AM and Montanero JM
Physical Review E vol. 92 (2)
01-08-2015
Stability of a rivulet flowing in a microchannelHerrada MA, ISMAIL AS, Montanero JM and Gañán-Calvo AM
International Journal of Multiphase Flow vol. 69, 1-7.
01-03-2015
2014
Isothermal dissolution of small rising bubbles in a low viscosity liquidISMAIL AS, Herrada MA, López-Herrera JM and Gañán-Calvo AM
Chemical Engineering and Processing: Process Intensification vol. 85, 136-144.
01-11-2014
Grants
Electro-Collapse Jetting: Towards the Next Generation of Printing TechnologiesAhmed Ismail and Jose Castrejon Pita
£296,834 EPSRC Engineering and Physical Sciences Research Council
01-04-2022 - 31-03-2024