Faculty Profile

Alexandra V. Bayles

Assistant Professor

Education

  • Post-doctorate – 2021 ETH Zürich
  • Doctorate – 2018 University of California Santa Barbara
  • Bachelors – 2013 University of Delaware

About Alexandra Bayles

The Bayles Group engineers fluidic platforms to build functional materials and characterize their performance. Close attention is paid to interfaces within multiphase materials, which can serve as templates to pattern hierarchical structures and as boundaries for mass transfer. Fundamental questions related to rheology, diffusion, structure, and dynamics have implications in diverse applications and industries. Projects in our group address grand challenges in additive manufacturing, bioprinting, sustainable formulation science, consumer products, food texturing, and soft robotics. Experimental efforts develop and exploit unique fluidic environments, including:

  • Advective assembly extruders: modular and scalable devices that build hierarchical architectures in flow
  • Microfluidic Fabry-Perot interferometer: an instrument that measures the spatiotemporal evolution of concentration profiles and locates impediments to mass transfer
  • Static rheometers: deployable static mixers designed to measure non-linear rheology

Our vision is that our unique tools will provide value in a wide variety of industries, both in the short term by providing industrial collaborators with phenomenological insight and implementable technological solutions, and, in the long term, by providing organizations with students trained in engineering fundamentals.

Select Publications

For a complete listing of publications, please view the Full CV.

  1. P. J. McCauley, A. V. Bayles*, “Nozzle innovations that improve capacity and capabilities of multimaterial additive manufacturing,” ACS Engineering Au. Rising Stars in Chemical Engineering Special Issue. 4 (4), 368-380. 2024. DOI: 10.1021/acsengineeringau.4c00001
  2. P. Danner, T. Pleij, G. Siqueira, A. V. Bayles, T. R. Venkatesan, J. Vermant*, D. M. Opris*. “Polysiloxane inks for multimaterial 3D printing of high-permittivity dielectric elastomers,” Advanced Functional Materials, 2313167, 2023. DOI: 10.1002/adfm.202313167
  3. A. V. Bayles, J. Vermant. “Divide, conquer, and stabilize: Engineering strong liquid-liquid interfaces,” Langmuir, 38, 21, 6499–6505, 2022. DOI: 10.1021/acs.langmuir.2c00948
  4. A. V. Bayles, T. Pleij, M. Hofmann, F. Hauf, T. A. Tervoort, J. Vermant. “Structuring hydrogel cross-link density using hierarchical filament 3D printing,” ACS Applied Materials and Interfaces, 14, 13, 15667–15677, 2022. DOI: 10.1021/acsami.2c02069
  5. R. Martineau, A. V. Bayles, C. Hung, K. Reyes, M. E. Helgeson, and M. Gupta. “Engineering gelation kinetics in living silk hydrogels by differential dynamic microscopy microrheology and machine learning,” Advanced Biology, 6, 1, 2101070, 2022. DOI: 10.1002/adbi.202101070
  6. A. V. Bayles, C. S. Valentine, T. Überrück, S. P. O. Danielsen, S. Han, M. E. Helgeson, and T. M. Squires. “Anomalous solute diffusivity in ionic liquids: label-free visualization and physical origins,” Physical Review X, 9, 011048, 2019. DOI: 10.1103/PhysRevX.9.011048
  7. A. V. Bayles, T. M. Squires, and M. E. Helgeson, “Probe microrheology without particle tracking using differential dynamic microscopy,” Rheologica Acta, 11, 863-869, 2017. DOI: 10.1007/s00397-017-1047-7

Patents

  1. WO2021205020A1 “METHOD FOR PRODUCING EMULSIONS” Inventors: A. V. Bayles, M. Hofmann, J. Vermant. Proprietor: Emulco E. & S. bvba. Publication date: Oct, 14, 2021. Filing date: Apr. 10, 2020.
  2. US 9597648 / WO2014062867 (A2) “NON-SPHERICAL DROPLET” Inventors: P.T. Spicer, M. Caggioni, J. Lenis-Abril, A. V. Bayles. Issue Date: Mar 21, 2017 Filing date: Oct 17, 2013.
  3. US20150105347 (A1) / EP 2909299 (B1) “SHAPE-CHANGING DROPLET” Inventors: P.T. Spicer, M. Caggioni, J. Lenis-Abril, A. V. Bayles. Issue Date: Nov 30, 2016., Filing date: Oct 17, 2013.

Awards

For a complete listing of awards, please view the Full CV.

  1. 2024 NSF CAREER
  2. 2023 Oak Ridge Associated Universities Ralph Powe Junior Faculty Award
  3. 2019 ETH Postdoctoral Research Fellowship
  4. 2017 US Delegate to 67th Lindau Nobel Laureate Meeting on Chemistry
  5. 2013 National Science Foundation Graduate Research Fellowship
  6. 2012 Barry Goldwater National Scholarship

Research Areas

Soft materials, advective assembly, additive manufacturing, stimuli-responsive hydrogels, emulsions, microfluidic interferometry, differential dynamic microscopy, microrheology

Alexandra Bayles
Office: 213 CLB
Phone: 302-831-8670
avbayles@udel.edu
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