Tiomkin, Sonya, and Alexander Gehrke. 2025. “Unsteady Aerodynamic Theory and Experiments of Hovering Membrane Wings.” Journal of Fluid Mechanics Rapids (under review - 2025). arXiv:2509.00666.
Gehrke, Alexander, Zoe King, and Kenneth S. Breuer. 2025. “Coupled Poro-Elastic Behavior of Hyper-Elastic Membranes.” Journal of Fluids and Structures 139 (December, 2025): 104411. https://doi.org/10.1016/j.jfluidstructs.2025.104411.
Gehrke, Alexander, and Karen Mulleners. “Highly Deformable Flapping Membrane Wings Suppress the Leading Edge Vortex in Hover to Perform Better.” Proceedings of the National Academy of Sciences 122, no. 6 (February 11, 2025): e2410833121. https://doi.org/10.1073/pnas.2410833121.
Gehrke, Alexander, Jules Richeux, Esra Uksul, and Karen Mulleners. “Aeroelastic Characterisation of a Bio-Inspired Flapping Membrane Wing.” Bioinspiration & Biomimetics 17, no. 6 (November 1, 2022): 065004. https://doi.org/10.1088/1748-3190/ac8632.
Krishna, Swathi, Alexander Gehrke, and Karen Mulleners. “To Tread or Not to Tread: Comparison between Water Treading and Conventional Flapping Wing Kinematics.” Bioinspiration & Biomimetics 17, no. 6 (November 1, 2022): 066018. https://doi.org/10.1088/1748-3190/ac9a1b.
Busch, Christoph, Alexander Gehrke, and Karen Mulleners. “On the Parametrisation of Motion Kinematics for Experimental Aerodynamic Optimisation.” Experiments in Fluids 63, no. 1 (January 2022): 10. https://doi.org/10.1007/s00348-021-03367-5.
Gehrke, Alexander, and Karen Mulleners. “Phenomenology and Scaling of Optimal Flapping Wing Kinematics.” Bioinspiration & Biomimetics 16, no. 2 (March 1, 2021): 026016. https://doi.org/10.1088/1748-3190/abd012.
Gehrke, Alexander, Guillaume Guyon-Crozier, and Karen Mulleners. “Genetic Algorithm Based Optimization of Wing Rotation in Hover.” Fluids 3, no. 3 (August 15, 2018): 59. https://doi.org/10.3390/fluids3030059.
X. Fan, Gehrke, A., and Breuer, K., "Wing twist and folding work in synergy to propel flapping wing animals and robots," 2024 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), Abu Dhabi, United Arab Emirates, 2024, pp. 13915-13921, https://doi.org/10.1109/IROS58592.2024.10801820.
Gehrke, A., Richeux, J. and Mulleners, K. Video: “Don’t be rigid, be BILLY.” 74th Annual Meeting of the APS Division of Fluid Dynamics- Gallery of Fluid Motion (American Physical Society, 2021), https://doi.org/10.1103/APS.DFD.2021.GFM.V0011.
Gehrke, A. and Mulleners, K. “Role of adaptive camber on optimal flapping wing performance.” The international symposium on Adaptive Motion of Animals and Machines (AMAM 2021).
Gehrke, A. and Mulleners, K. “Adaptive pitching motion kinematics for tuning flapping wing aerodynamic performance.” The international symposium on Adaptive Motion of Animals and Machines (AMAM 2019).
Gehrke, A., Wuensch, O. and Ruetten, M. “Integral Surface Analysis of Vortical Lobed Nozzle Flows.” 55th AIAA Aerospace Sciences Meeting (American Institute of Aeronautics and Astronautics, 2017), https://doi.org/10.2514/6.2017-1706.
Gehrke, A., “Experimental and Data-Driven Approaches to Understanding and Controlling Unsteady Aerodynamics.” Thermal, Fluids, Energy Systems Seminar, University of Utah, Salt Lake City, USA, September 2025.
Gehrke, A., “Shaping Flows: Experimental Pathways for Understanding and Controlling Unsteady Aerodynamics.” Institute of Fluid Mechanics Seminar Series, Technische Universität Braunschweig, Braunschweig, Germany, September 2025.
Gehrke, A., “Adaptive Strategies in Experimental Fluid Dynamics for Controlling Unsteady Aerodynamics.” Institute of Mechanics, Materials and Civil Engineering Seminar Series, Université catholique de Louvain, Louvain-la-Neuve, Belgium, September 2025.
Gehrke, A., “Experimental and Data-Driven Pathways for Controlling Unsteady Aerodynamics.” Fluid and Biodynamics Seminar, Max-Planck-Institut für Dynamik und Selbstorganisation, Göttingen, Germany, September 2025.
Gehrke, A., “Shaping the Flow: Experimental Pathways to Understanding and Controlling Unsteady Aerodynamics.” Institute of Fluid Mechanics and Heat Transfer Seminar Series, Technische Universität Wien, Vienna, Austria, August 2025.
Gehrke, A., “Unsteady Aerodynamics and Flow Control Strategies for Next-Generation Aerial Mobility and Infrastructure.” Institute of Mechanical and Electrical Engineering Seminar Series, University of Southern Denmark, Odense, Denmark, August 2025.
Gehrke, A., “A vortex for insects but not for bats.” Center for Mathematical Biology Seminar Series, University of Pennsylvania, Philadelphia, USA, October 2024.
Gehrke, A., “Impact of Porosity on Vortex Formation and Drag Production in Flexible Membrane Disks.” Remote Colloquium on Vortex Dominated Flows (ReCoVor), Online, May 2024.
Gehrke, A., “From Inspiration to Application: Advancing Unsteady Aerodynamics Through Biomimetic Design.” Center for Fluid Mechanics Seminar Series, Brown University, Providence, USA, February 2024.
Gehrke, A., “Phenomenology and scaling of optimal flapping wing kinematics.” Remote Colloquium on Vortex Dominated Flows (ReCoVor), Online, December 2020.
Gehrke, A., King, Z., and Breuer, K., “Stabilizing Flows: The Role of Poro-Elasticity in Reducing Unsteady Drag Forces.” Proceedings of the 77th Annual Meeting of the American Physical Society, Division of Fluid Dynamics, Salt Lake City, UT, USA, November 2024.
Gehrke, A., King, Z., and Breuer, K., “Unsteady forces and flows behind a poro-elastic membrane disk.” 2024 Fluid & Elasticity Conference, Arcachon, France, April 2024.
Gehrke, A., King, Z., and Breuer, K., “Drag forces and unsteady wakes behind a poroelastic membrane.” Direct In-person Colloquium on Vortex Dominated Flows (DisCoVor), Delft, Netherlands, April 2024.
Gehrke, A., Swarrup S. and Breuer, K., “Deformation, drag, and vortex shedding from a porous membrane disk.” Proceedings of the 76th Annual Meeting of the American Physical Society, Division of Fluid Dynamics, Washington, DC, USA, November 2023.
Fan X., Gehrke, A., Sollenberger A. and Breuer, K., “Wing folding and twisting synergistically boost lift generation for flapping wing flight.” Proceedings of the 76th Annual Meeting of the American Physical Society, Division of Fluid Dynamics, Washington, DC, USA, November 2023.
Gehrke, A. and Mulleners, K., “Vortex dynamics and aerodynamic performance of highly deformable flapping wings.” Proceedings of the 75th Annual Meeting of the American Physical Society, Division of Fluid Dynamics, Indianapolis, IN, USA, November 2022.
Gehrke, A. and Mulleners, K., “Aerodynamic performance of a bio-inspired membrane wing.” Direct In-person Colloquium on Vortex Dominated Flows (DisCoVor), Villars-sur-Ollon, VD, Switzerland, May 2022.
Gehrke, A., Richeux J. and Mulleners, K., “A bio-inspired membrane wing for passive aerodynamic control.” Proceedings of the 74th Annual Meeting of the American Physical Society, Division of Fluid Dynamics, Phoenix, AZ, USA, November 2021.
Baskaran, M., Zuliani F., Gehrke, A., Paik J. and Mulleners, K., “Optimisation of a bioinspired jet propulsor.” Proceedings of the 74th Annual Meeting of the American Physical Society, Division of Fluid Dynamics, Phoenix, AZ, USA, November 2021.
Guasch, M., Matthews M., Gehrke, A., Mulleners, K. and Sponberg S., “Wing Flexabilty impacts LEV Bursting location on hawkmoth wings.” Proceedings of the 74th Annual Meeting of the American Physical Society, Division of Fluid Dynamics, Phoenix, AZ, USA, November 2021.
Gehrke, A. and Mulleners, K., “Optimization and scaling of aerodynamic performance for a flapping wing in hover.” Proceedings of the 73rd Annual Meeting of the American Physical Society, Division of Fluid Dynamics, Chicago, IL, USA, November 2020.
Gehrke, A., De Guyon-Crozier, G. and Mulleners, K., “Genetic algorithm based optimisation of wing rotation in hover.” Proceedings of the 71st Annual Meeting of the American Physical Society, Division of Fluid Dynamics, Atlanta, GA, USA, November 2018.
Gehrke, A., Wuensch, O. and Ruetten, M. “Integral Surface Analysis of Vortical Lobed Nozzle Flows.” in 55th AIAA Aerospace Sciences Meeting (American Institute of Aeronautics and Astronautics, 2017).