• Giant Activity-Induced Stress Plateau in Entangled Polymer Solutions
    D. Breoni, C. Kurzthaler, B. Liebchen, H. Löwen, S. Mandal


Out-of-equilibrium Soft Matter: Active Fluids 

edited by Christina Kurzthaler*, Luigi Gentile*, and Howard A. Stone 

Soft Matter Series, The Royal Society of Chemistry, 2023

DOI: 10.1039/9781839169465

Abstract: The term active fluids refers to motions that are created by transforming energy from the surroundings into directed motion. There are many examples, both natural and synthetic, including individual swimming bacteria or motile cells, drops and bubbles that move owing to surface stresses (so-called Marangoni motions), and chemical- or optical-driven colloids. Investigations into active fluids provide new insights into non-equilibrium systems, have the potential for novel applications, and open new directions in physics, chemistry, biology and engineering. This book provides an expert introduction to active fluids systems, covering simple to complex environments. It explains the interplay of chemical processes and hydrodynamics, including the roles of mechanical and rheological properties across active fluids, with reference to experiments, theory, and simulations. These concepts are discussed for a variety of scenarios, such as the trajectories of microswimmers, cell crawling and fluid stirring, and apply to collective behaviours of dense suspensions and active gels. Emerging avenues of research are highlighted, ranging from the role of active processes for biological functions to programmable active materials, showcasing the exciting potential of this rapidly-evolving research field.

Contributed chapters:


  • Surface corrugations induce helical near-surface flows and transport in microfluidic channels
    C. Kurzthaler*, D. L. Chase*, H. A. Stone 
    Journal of Fluid Mechanics  982, A31 (2024)
    DOI: 10.1017/jfm.2024.106
  • Characterization and control of the run-and-tumble dynamics of Escherichia Coli
    C. Kurzthaler*, Y. Zhao*, N. Zhou, J. Schwarz-Linek, C. Devailly, J. Arlt, J.-D. Huang, W. C. K. Poon, T. Franosch, J. Tailleur, V. A. Martinez
    Physical Review Letters 132, 038302 (2024)
    DOI: 10.1103/PhysRevLett.132.038302  
  • Quantitative characterization of run-and-tumble statistics in bulk bacterial suspensions
    Y. Zhao*, C. Kurzthaler*, N. Zhou, J. Schwarz-Linek, C. Devailly, J. Arlt, J.-D. Huang, W. C. K. Poon, T. Franosch, V. A. Martinez, J. Tailleur 
    Physical Review E 109, 014612 (2024)
    DOI: 10.1103/PhysRevE.109.014612
  • Transport of a passive scalar in wide channels with surface topography: An asymptotic theory
    J . V. Roggeveen, H. A. Stone, C. Kurzthaler
    Journal of Physics: Condensed Matter  35, 274003 (2023)
    DOI: 10.1088/1361-648X/acc8ad
  • Shape of a tethered filament in various low-Reynolds-number flows
    C. Kurzthaler, R. Brandão, O. Schnitzer, H. A. Stone
    Physical Review Fluids 8, 014101 (2023)
    DOI: 10.1103/PhysRevFluids.8.014101
  • Hydrodynamically induced helical particle drift due to patterned surfaces
    D. L. Chase*, C. Kurzthaler*, H. A. Stone 
    Proceedings of the National Academy of Sciences 119, e2202082119 (2022)
    DOI: 10.1073/pnas.2202082119
  • A geometric criterion for the optimal spreading of active polymers in porous media
    C. Kurzthaler*, S. Mandal*, T. Bhattacharjee, H. Löwen, S. S. Datta, and H. A. Stone
    Nature Communications 12, 7088 (2021)
    DOI: 10.1038/s41467-021-26942-0
  • Two-dimensional Brownian motion of anisotropic dimers
    D. B. Mayer, E. Sarmiento-Gómez, M. A. Escobedo-Sánchez, J. P. Segovia-Gutiérrez, C. Kurzthaler, S. U. Egelhaaf, T. Franosch
    Physical Review E  104 (1), 014605, (2021)
    DOI: 10.1103/PhysRevE.104.014605
  • Microswimmers near corrugated, periodic surfaces
    C. Kurzthaler and H. A. Stone
    Soft Matter  17, 3322 (2021)
  • Crowding-enhanced diffusion: An exact theory for highly entangled self-propelled stiff filaments
    S. Mandal*, C. Kurzthaler*, T. Franosch, and H. Löwen 
    Physical Review Letters 125, 138002  (2020)
  • Particle motion nearby rough surfaces
    C. Kurzthaler, L. Zhu, A. A. Pahlavan, and H. A. Stone
    Physical Review Fluids (Rapids) 5, 082101(R) (2020)
  • Frequency-dependent higher-order Stokes singularities near a planar elastic boundary: Implications for the hydrodynamics of an active microswimmer near an elastic interface
    A. Daddi-Moussa-Ider, C. Kurzthaler, C. Hoell, A. Zöttl, M. Mirzakhanloo, M.-R. Alam, A. M. Menzel, H. Löwen, and S. Gekle
    Physical Review E  100 (3), 032610 (2019)
  • Elastic behavior of a semiflexible polymer in 3D subject to compression and stretching forces
    C. Kurzthaler
    Soft Matter  14 (37), 7634 (2018)
  • Probing the spatiotemporal dynamics of catalytic Janus particles with single-particle tracking and differential dynamic microscopy
    C. Kurzthaler, C. Devailly, J. Arlt, T. Franosch, W. C. K. Poon, V. A. Martinez, and A. T. Brown 
    Physical Review Letters  121 (7), 078001 (2018)
  • Bimodal probability density characterizes the elastic behavior of a semiflexible polymer under compression
    C. Kurzthaler and T. Franosch 
    Soft Matter  14 (14), 2682 (2018)
    DOI: 10.1039/C8SM00366A
  • Intermediate scattering function of an anisotropic Brownian circle swimmer
    C. Kurzthaler and T. Franosch
    Soft Matter 13 (37), 6396 (2017)
  • Exact solution for the force-extension relation of a semiflexible polymer under compression
    C. Kurzthaler and T. Franosch
    Physical Review E  95 (5), 052501 (2017)
  • Intermediate scattering function of an anisotropic active Brownian particle
    C. Kurzthaler, S. Leitmann, and T. Franosch
    Scientific Reports  6, 36702 (2016)

*contributed equally

A complete list of publications can be found @google scholar