Dr Ahmed Ismail
Lecturer in Fluid Dynamics
Research Seminars Coordinator of The Centre for Intelligent Transport
School of Engineering and Materials Science
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

Publications of specific relevance to the Centre for Intelligent Transport
2026
Focused Liquid Pinching in Coaxial Drop Capsule GenerationTaraki N Said Ismail A
Langmuir,
American Chemical Society (Acs) vol. 42 (8), 6344-6353.
18-02-20262024
Liquid pinching dynamics in an inertial transitioning regimeIsmail AS Taraki N
Physical Review Research,
American Physical Society (Aps) vol. 6 (4)
01-11-20242022
The role of geometry on controlled cavity collapse and top jet dropTaraki N Ismail AS
Physics of Fluids,
Aip Publishing vol. 34 (7)
01-07-2022
229 Developing novel smell test for Parkinson’s disease using microencapsulation of essential oils in alginateLi H Ismail A Castrejon-Pita R
Journal of Neurology Neurosurgery & Psychiatry,
Bmj vol. 93 (6), a79.3-a7a79.
27-05-20222021
Characterization of capillary waves: A review and a new optical methodSlavchov RI Peychev B Ismail AS
Physics of Fluids,
Aip Publishing vol. 33 (10)
01-10-2021
A novel capsule-based smell test fabricated via coaxial drippingIsmail AS Goodwin GR Castrejon-Pita JR Noyce AJ Azevedo HS
Journal of The Royal Society Interface,
The Royal Society vol. 18 (177)
28-04-20212019
Scaling Laws for Transition from Varicose to Whipping Instabilities in Electrohydrodynamic JettingXia HH Ismail A Yao J Stark J
Physical Review Applied,
American Physical Society (Aps) vol. 12 (1)
17-07-20192018
Breakup Length of Electrified Liquid Jets: Scaling Laws and ApplicationsIsmail AS Yao J Xia HH Stark JPW
Physical Review Applied,
American Physical Society (Aps) vol. 10 (6)
01-12-2018
Controlled cavity collapse: scaling laws of drop formationIsmail AS Gañán-Calvo AM Castrejón-Pita JR Herrada MA Castrejón-Pita AA
Soft Matter,
Royal Society of Chemistry (Rsc) vol. 14 (37), 7671-7679.
01-01-20182016
Effect of a Surrounding Liquid Environment on the Electrical Disruption of Pendant DropletsISMAIL A Lopez-Herrera JM Herrada MA Modesto-Lopez LB Gañán-Calvo AM
Langmuir: The Acs Journal of Surfaces and Colloids,
American Chemical Society vol. 32 (27), 6815-6824.
29-06-20162015
Convective-to-absolute instability transition in a viscoelastic capillary jet subject to unrelaxed axial elastic tensionISMAIL A Herrada MA Gañán-Calvo AM Montanero JM
Physical Review E vol. 92 (2)
01-08-2015
Stability of a rivulet flowing in a microchannelHerrada MA ISMAIL AS Montanero JM Gañán-Calvo AM
International Journal of Multiphase Flow vol. 69, 1-7.
01-03-20152014
Isothermal dissolution of small rising bubbles in a low viscosity liquidISMAIL AS Herrada MA López-Herrera JM Gañán-Calvo AM
Chemical Engineering and Processing: Process Intensification vol. 85, 136-144.
01-11-2014
Grants

Grants of specific relevance to the Centre for Intelligent Transport
Electro-Collapse Jetting: Towards the Next Generation of Printing TechnologiesAhmed Ismail and Jose Castrejon Pita
£296,834
EPSRC Engineering and Physical Sciences Research Council01-04-2022 - 31-03-2024
Research Group
PhD Students
- Kennia Perea Pereyra
Project Title Hydrodynamic Printing of Complex Biomaterials - Nilofar Taraki
Disintegration of Liquid Fragments