Dr Lyndon Koens
Lecturer
School of Mathematical Sciences
College of Sciences
Eligible to supervise Masters and PhD - email supervisor to discuss availability.
I work on the dynamics of microscopic systems. Colloids, bacteria and micromachines all display complex dynamical behaviour. This is due to the dynamics of an object at this scale critically depends on its physical interactions and shape. In my work I develop models to understand and model these emergent phenomena. In doing so I have dealt with viscous flows, Brownian motion, surface tension, electromagnetism, non-Newtonian fluids and quantum mechanics. Typically in these explorations I use asymptotic and numerical techniques to develop simple and accurate models for microscopic dynamic systems. In doing so I have regularised singular integrals, inverted integral equations and evaluated stochastic differential equations.
I work on the dynamics of microscopic systems. Colloids, bacteria and micromachines all display complex dynamical behaviour. This is due to the dynamics of an object at this scale critically depends on its physical interactions and shape. In my work I develop models to understand and model these emergent phenomena. In doing so I have dealt with viscous flows, Brownian motion, surface tension, electromagnetism, non-Newtonian fluids and quantum mechanics. Typically in these explorations I use asymptotic and numerical techniques to develop simple and accurate models for microscopic dynamic systems. In doing so I have regularised singular integrals, inverted integral equations and evaluated stochastic differential equations.
| Date | Position | Institution name |
|---|---|---|
| 2025 - ongoing | Lecturer | University of Adelaide |
| 2021 - 2025 | Lecturer | University of Hull |
| 2020 - 2021 | DECRA Fellow | Macquarie University |
| 2016 - 2020 | Lecturer | Macquarie University |
| Language | Competency |
|---|---|
| English | Can read, write, speak, understand spoken and peer review |
| Date | Institution name | Country | Title |
|---|---|---|---|
| 2012 - 2016 | University of Cambridge | United Kingdom | PhD |
| 2010 - 2011 | University of Melbourne | Australia | MSc |
| 2007 - 2009 | University of Melbourne | Australia | BSc |
| Date | Title | Institution name | Country |
|---|---|---|---|
| 2022 | Postgraduate Certificate in Academic Practice | University of Hull | United Kingdom |
| Year | Citation |
|---|---|
| 2025 | Anonymous. (2025). Taylor swimming sheet under a finite Brinkman layer. Physical Review Fluids, 10(7), 0741021-07410218. |
| 2025 | Man, Y., Koens, L., & Lauga, E. (2025). Slip slender-body theory. Journal of Fluid Mechanics, 1025, 31 pages. |
| 2024 | Katsamba, P., Butler, M. D., Koens, L., & Montenegro-Johnson, T. D. (2024). Slender phoretic loops and knots. Physical Review Fluids, 9(5), 28 pages. Scopus2 WoS2 |
| 2024 | Koens, L., & Walker, B. J. (2024). Viscous tubular-body theory for plane interfaces. Journal of Fluid Mechanics, 979, 33 pages. Scopus1 WoS1 |
| 2023 | Koens, L., Vernekar, R., Krüger, T., Lisicki, M., & Inglis, D. W. (2023). The slow viscous flow around a general rectangular doubly-periodic arrays of infinite slender cylinders. IMA Journal of Applied Mathematics Institute of Mathematics and Its Applications, 88(6), 869-887. |
| 2022 | Wang, W., Gardi, G., Malgaretti, P., Kishore, V., Koens, L., Son, D., . . . Sitti, M. (2022). Order and information in the patterns of spinning magnetic micro-disks at the air-water interface. Science Advances, 8(2), eabk0685. Scopus37 WoS36 Europe PMC27 |
| 2022 | Tanasijević, I., Jung, O., Koens, L., Mourran, A., & Lauga, E. (2022). Jet-driven viscous locomotion of confined thermoresponsive microgels. Applied Physics Letters, 120(10), 6 pages. Scopus6 WoS6 |
| 2022 | Katsamba, P., Butler, M. D., Koens, L., & Montenegro-Johnson, T. D. (2022). Chemically active filaments: analysis and extensions of slender phoretic theory. Soft Matter, 18(37), 7051-7063. Scopus5 WoS4 |
| 2022 | Koens, L. (2022). Tubular-body theory for viscous flows. Physical Review Fluids, 7(3), 10 pages. Scopus8 WoS8 |
| 2021 | Koens, L., & Montenegro-Johnson, T. D. (2021). Local drag of a slender rod parallel to a plane wall in a viscous fluid. Physical Review Fluids, 6(6), 16 pages. Scopus10 WoS10 |
| 2021 | Koens, L., & Lauga, E. (2021). Geometric phase methods with Stokes theorem for a general viscous swimmer. Journal of Fluid Mechanics, 916, 43 pages. Scopus4 WoS4 |
| 2021 | Zhao, B., & Koens, L. (2021). Regularized stokeslets lines suitable for slender bodies in viscous flow. Fluids, 6(9), 335. Scopus2 WoS2 |
| 2020 | Lustri, C. J., Koens, L., & Pethiyagoda, R. (2020). A note on the Stokes phenomenon in flow under an elastic sheet: Stokes Phenomenon in flow under a sheet. Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences, 378(2179), 20190530. Scopus2 WoS2 |
| 2019 | Zhang, H., Koens, L., Lauga, E., Mourran, A., & Möller, M. (2019). A Light-Driven Microgel Rotor. Small, 15(46), 9 pages. Scopus43 WoS42 Europe PMC17 |
| 2019 | Zhao, B., Lauga, E., & Koens, L. (2019). Method of regularized stokeslets: Flow analysis and improvement of convergence. Physical Review Fluids, 4(8), 21 pages. Scopus15 WoS15 |
| 2019 | Koens, L., Wang, W., Sitti, M., & Lauga, E. (2019). The near and far of a pair of magnetic capillary disks. Soft Matter, 15(7), 1497-1507. Scopus8 WoS8 Europe PMC3 |
| 2018 | Koens, L., & Lauga, E. (2018). The boundary integral formulation of Stokes flows includes slender-body theory. Journal of Fluid Mechanics, 850, R11-R112. Scopus45 WoS43 |
| 2018 | Koens, L., Zhang, H., Moeller, M., Mourran, A., & Lauga, E. (2018). The swimming of a deforming helix. European Physical Journal E, 41(10), 14 pages. Scopus10 WoS12 Europe PMC4 |
| 2017 | Koens, L., & Lauga, E. (2017). Analytical solutions to slender-ribbon theory. Physical Review Fluids, 2(8), 20 pages. Scopus11 WoS9 |
| 2017 | Koens, L., Lisicki, M., & Lauga, E. (2017). The non-Gaussian tops and tails of diffusing boomerangs. Soft Matter, 13(16), 2977-2982. Scopus9 WoS9 Europe PMC2 |
| 2017 | Montenegro-Johnson, T. D., Koens, L., & Lauga, E. (2017). Microscale flow dynamics of ribbons and sheets. Soft Matter, 13(3), 546-553. Scopus11 WoS12 Europe PMC2 |
| 2016 | Koens, L., & Lauga, E. (2016). Rotation of slender swimmers in isotropic-drag media. Physical Review E, 93(4), 6 pages. Scopus6 WoS6 Europe PMC2 |
| 2016 | Man, Y., Koens, L., & Lauga, E. (2016). Hydrodynamic interactions between nearby slender filaments. Epl, 116(2), 6 pages. Scopus30 WoS30 |
| 2016 | Koens, L., & Lauga, E. (2016). Slender-ribbon theory. Physics of Fluids, 28(1), 26 pages. Scopus24 WoS23 |
| 2015 | Godínez, F. A., Koens, L., Montenegro-Johnson, T. D., Zenit, R., & Lauga, E. (2015). Complex fluids affect low-Reynolds number locomotion in a kinematic-dependent manner. Experiments in Fluids, 56(5), 10 pages. Scopus18 WoS17 |
| 2014 | Koens, L., & Lauga, E. (2014). The passive diffusion of Leptospira interrogans. Physical Biology, 11(6), 12 pages. Scopus18 WoS18 Europe PMC4 |
| 2013 | Koens, L., Simula, T. P., & Martin, A. M. (2013). Vibrations of a columnar vortex in a trapped Bose-Einstein condensate. Physical Review A Atomic Molecular and Optical Physics, 87(6), 5 pages. Scopus5 WoS5 |
| 2012 | Koens, L., & Martin, A. M. (2012). Perturbative behavior of a vortex in a trapped Bose-Einstein condensate. Physical Review A Atomic Molecular and Optical Physics, 86(1), 11 pages. Scopus11 WoS10 |
| Year | Citation |
|---|---|
| 2018 | Wang, W., Kishore, V., Koens, L., Lauga, E., & Sitti, M. (2018). Collectives of Spinning Mobile Microrobots for Navigation and Object Manipulation at the Air-Water Interface. In IEEE International Conference on Intelligent Robots and Systems (pp. 6186-6192). IEEE. DOI Scopus10 |
| 2018 | Wang, W., Kishore, V., Koens, L., Lauga, E., & Sitti, M. (2018). Collectives of Spinning Mobile Microrobots for Navigation and Object Manipulation at the Air-water Interface. In A. A. Maciejewski, A. Okamura, A. Bicchi, C. Stachniss, D. Z. Song, D. H. Lee, . . . L. Zollo (Eds.), 2018 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS) (pp. 6186-6192). SPAIN, Madrid: IEEE. WoS3 |
| Date | Role | Research Topic | Location | Program | Supervision Type | Student Load | Student Name |
|---|---|---|---|---|---|---|---|
| 2025 - 2025 | Principal Supervisor | The hydrodynamics of microscopic filter feeders | Macquarie University | - | Doctorate | Full Time | Tasawar Iqbal |
| 2024 - 2025 | Principal Supervisor | Regularisation effects on Green’s functions | University of Hull | - | Master | Full Time | Luke Russel |
| 2024 - ongoing | Principal Supervisor | Inhalation of Micro-plastic fibres | University of Hull | - | Doctorate | Part Time | Ed Page |
| 2022 - 2024 | Co-Supervisor | Quantitative methods for Ichnology | Macquarie University | - | Doctorate | Full Time | Brittany Laing |
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