Welcome to the Research Group of Prof. Dr. Christian Wagner

Lectures

SoSe 2016: Rheologie und Strömungsmechanik einfacher und komplexer Flüssigkeiten

Inhalt: Die meisten Vorgänge in der belebten Natur lassen sich nicht mit einfachen physikalischen Konzepten beschreiben, denn sie sind weder linear noch finden sie im thermischen Gleichgewicht statt. Dennoch kann man ein hohes Maß an Selbstorganisation und vielfältige Symmetrien beobachten. Zur Beschreibung dieser Phänomene in einfachen, physikalischen Modellsystemen werden Konzepte wie Stabilitätsanalyse, Birfurkationstheorie, Symmetrie und Chaos verwendet. Die Vorlesung wird eine Einführung in diese Begriffe geben und darauf aufbauend exemplarische Experimente der Strukturbildung behandeln. Dabei soll untersucht werden, nach welchen Prinzipien ein System, dass in einem stetigen (Energie-) Austausch mit der Umgebung steht, kohärente Strukturen hoher Symmetrie ausbilden kann. Beispiele in der Natur sind die Bildung von Wolkenstraßen oder die Selbstorganisation bei der Entwicklung eines Embryos aus der Eizelle. Physikalische Modellsysteme sind z.B. einfache Flüssigkeiten, die bei der Benetzung oder beim Fließen charakteristische, makroskopische Strukturen aufweisen.

Zeit: Mo. 10:00 - 12:00 und Do. 8:30 - 10:00

Ort: Geb. E2 6, Seminarraum E.04

Vorlesungsbeginn: 19.04.2016

Archive

  • SoSe 2015: Rheologie und Strömungsmechanik einfacher und komplexer Flüssigkeiten
  • SoSe 2012: Elementare Einführung in die Physik II für Chemiker, Biologen und Pharmazeuten
  • SoSe 2012: Ringvorlesung Biophysik
  • WiSe 2011/2012: Elementare Einführung in die Physik I (Mechanik, Wärmelehre) für Chemiker, Biologen und Pharmazeuten
  • SoSe 2011: Rheologie und Strömungsmechanik einfacher und komplexer Flüssigkeiten
  • SoSe 2009: Mathematisches Tutorium I
  • SoSe 2009: Experimentalphysik II
  • SoSe 2008: Strömungsdynamik einfacher und komplexer Flüssigkeiten
  • SoSe 2006: Theoretische und rechnerische Ergänzungen zur Experimentalphysik II
  • SoSe 2005, WiSe 2005/2006: Theoretische und rechnerische Ergänzungen zur Experimentalphysik I
  • WiSe 2004/2005: Nichtlineare Dynamik und Strukturbildung (Experimentalphysikalisches Wahlpflichtfach)
  • SoSe 2004: Rheologie und Strömungsdynamik komplexer Flüssigkeiten (Experimentalphysikalisches Seminar)
  • Fortgeschrittenenpraktikum (FoPra)

Group members

Prof. Dr. Christian Wagner

Contact Information:
Room: 3.21
Phone: +49 (0)681 302 - 3003
Email: c.wagner(at)mx.uni-saarland.de

Dr. rer. nat. Thomas John

Contact Information:
Room: 3.23
Phone: +49 (0)681 302 - 3944
Email: thomas.john(at)physik.uni-saarland.de

Elke Huschens
secretary

Contact Information:
Phone: +49 (0)681 302 - 3944
Email: e.huschens(at)mx.uni-saarland.de

CTA Karin Kretsch
chemical-technical assistant

Contact Information:
Phone: +49 (0)681 302 - 3258
Email: k.kretsch(at)mx.uni-saarland.de

M. Sc. Othmane Aouane
Phd student

Contact Information:
Room: 3.23
Phone: +49 (0)681 302 - 3944
Email: o.aouane(at)gmail.com

Research topics:
Red Blood Cells

Physical Engineer Viviana Claveria
Phd student

Contact Information:
Room: 3.23
Phone: +49 (0)681 302 - 3937
Email: viviana.claveria(at)usach.cl

Research topics:
Red Blood Cells

Dr. Jorge Fiscina

Contact Information:
Room: 3.22
Phone: +49 (0)681 302 - 3466
Email: j.fiscina(at)mx.uni-saarland.de

Research topics:
Superresolution, Rheology

M. Sc. Daniel Flormann
Phd student
Contact Information:
Room: 3.26
Phone: +49 (0)681 302 - 3937
Email: daniel.flormann(at)web.de

Research topics:
Taylor Couette, Confocal Microscopy, Red Blood Cells

M. Sc. Javad Najafi
Phd student

Contact Information:
Room: 3.20
Phone: +49 (0)681 302 - 2977
Email: javad.najafi(at)uni-saarland.de

Research topics:
Microswimmers

Dipl. Phys. Christian Ruloff
Phd student

Contact Information
Room 3.20
Phone: +49 (0)681 302 - 2977
Email: c.ruloff(at)mx.uni-saarland.de

Research Topics
Optical tweezers and holographic optical tweezers, Micropipettes, Microfluidics, Microswimmers

Former group members

  • Dr. rer. nat. Philipp Bohr
  • Dr. rer. nat. Matthias Brust
  • M. Sc.Florimond Collette
  • Dipl. Phys. Roland Dörr
  • Dr. rer. nat. Stephan Gier
  • Dr. rer. nat. Andreas Gross
  • Dr. rer. nat. Achim Jung
  • B. Sc. Julia Kasper
  • B. Sc. Sonia May
  • Dr. rer. nat. Matthias Mußler
  • Dr. rer. nat. Julia Nase
  • Dr. rer. nat. Rainer Sattler
  • Dr. rer. nat. Christof Schäfer
  • Dr. rer. nat. Gernot Scheerer
  • Dr. rer. nat. Patrick Steffen
  • Dr. rer. nat. David Steinmetz
  • Dr. rer. nat. Virginie Vergnat
  • Dipl. Phys. Mathias Werth
  • Dr. rer. nat. Andreas Zell
  • Dr. rer. nat. Andreas Ziehl
  • B. Sc. Bernhard Zimmer

Research Topics

Website under maintenance. This content will be extended soon.
  • Confocal Microscopy
  • Optical tweezers and holographic optical tweezers
  • Microfluidics
  • Micropipettes
  • Microswimmers
  • Red Blood Cells
  • Superresolution
  • Taylor Couette

Publications

Journal articles

  1. D. Flormann, K. Schirra, T. Podgorski, and C. Wagner
    On the rheology of red blood cell suspensions with different amounts of dextran: separating the effect of aggregation and increase in viscosity of the suspending phase
    accepted for Rheologica acta
  2. K. Woll, A. Bergamaschi, K. Avchachov, F. Djurabekova, S. Gier, C. Pauly, P. Leibenguth, C.Wagner, K. Nordlund, and F. Mücklich
    Ru/Al Multilayers Integrate Maximum Energy Density and Ductility for Reactive Materials
    Scientific Reports 6, 19535 (2016)
    link
  3. A. Lindner, J. E. Fiscina, and C. Wagner
    Single particles accelerate final stages of capillary break-up
    Eur. Phys. Lett. 110, 64002 (2015)
    link
    Highlighted among others in www.pro-physik.de, at git-labor.de, and at chemie.de
  4. D. Flormann, E. Kuder, P. Lipp, C. Wagner, and L. Kaestner
    Is there a role of C-reactive protein in red blood cell aggregation?
    International Journal of Laboratory Hematology 37, 474 (2015)
    link
  5. M. Kettner, A. Schmidt, M. Windgassen, P. Schmidt, C. Wagner, and F. Ramsthaler
    Impact height and wall distance in bloodstain pattern analysis-what patterns of round bloodstains can tell us
    International Journal of Legal Medicine 129, 133-140 (2015)
    link
  6. T.P. Corrales, M. Bai, V. del Campo, P. Homm, P. Ferrari, A. Diama, C. Wagner, H. Taub, Klaus Knorr, M. Deutsch, M.J. Retamal, U.G. Volkmann, and P. Huber
    Spontaneous Formation of Nanopatterns in Velocity-Dependent Dip-Coated Organic Films: From Dragonflies to Stripes
    Nano Letters 8, 9954 (2014)
    link
  7. O. Aouane, M. Thiebaud, A. Benyoussef, C. Wagner, and C. Misbah
    Vesicle dynamics in a confined Poiseuille flow: From steady-state to chaos
    Phys. Rev. E 90, 033011 (2014)
    link
  8. A. Fall, B. Weber, M. Pakpour, N. Lenoir, N. Shahidzadeh, J. Fiscina, C. Wagner, and D. Bonn
    Sliding Friction on Wet and Dry Sand
    Phys. Rev. Lett. 112, 175502 (2014)
    link
    Highlighted in Sciencealert, Synopsis, Physicsworld, and Washington Post
  9. M. Brust, O. Aouane, M. Thiébaud, D. Flormann, C. Verdier, L. Kaestner, M. W. Laschke, H. Selmi, A. Benyoussef, T. Podgorski, G. Coupier, C. Misbah, and C. Wagner
    The plasma protein fibrinogen stabilizes clusters of red blood cells in microcapillary flows
    Scientific Reports 4, 4348 (2014)
    link
    Highlighted in CNRS-INP
  10. J. Zilz, C. Schaefer, C. Wagner, R. J. Poole, M. A. Alves, and A. Lindner
    Serpentine channels: micro-rheometers for fluid relaxation times
    Lab Chip 14, 351-358 (2014)
    link
  11. J. E. Fiscina, P. Fromholz, R. Sattler, and C. Wagner
    Wide band Fresnel super-resolution applied to capillary break up of viscoelastic fluids
    Experiments In Fluids 54, 1611 (2013)
    link
  12. C. Wagner, P. Steffen, and S. Svetina
    Aggregation of Red Blood Cells: From Rouleaux to Clot Formation
    Comptes Rendues en Physique 14, 459 (2013)
    link
  13. D. Samanta, Y. Dubief, M. Holzner, C. Schaefer, A. Morozov, C. Wagner, and B. Hof
    Elasto-inertial turbulence
    PNAS 110, 10557 (2013)
    link
  14. S. Wirtz, M. Seeger, A. Zell, C. Wagner, J.-F. Wagner, and J. B. Ries
    Applicability of Different Hydraulic Parameters to Describe Soil Detachment in Eroding Rills
    PLOS ONE 8, 5 (2013)
    link
  15. L. Pan, A. Morozov, C. Wagner, and P.E. Arratia
    Nonlinear elastic instability in channel flows at low Reynolds numbers
    Phys. Rev. Lett. 110, 174502 (2013)
    link
  16. M. Mussler, S. Rafaï, P. Peyla, and C. Wagner
    Effective viscosity of non-gravitactic chlamydomonas reinhardtii microswimmer suspensions
    Eur. Phys. Lett. 101, 54004 (2013)
    link
  17. G. Minetti, S. Egeé, D. Mörsdorf, P. Steffen, A. Makhro, C. Achilli, A. Ciana, J. Wang, G. Bouyer, I. Bernhardt, C. Wagner, S. Thomas, A. Bogdanova, and L. Kaestner
    Red cell investigations: Art and artefacts
    Blood Reviews 27, 91–101 (2013)
    link
  18. D. Pietschmann, R. Stannarius, C. Wagner, and T. John
    Faraday waves under time-reversed excitation
    Phys. Rev. Lett. 110, 094503 (2013)
    link
  19. M. Brust, C. Schaefer, R. Doerr, L. Pan, M. Garcia, P. E. Arratia, and C. Wagner
    Rheology of Human Blood Plasma: Viscoelastic Versus Newtonian Behavior
    Phys. Rev. Lett. 110, 078305 (2013)
    link
    Highlighted in Physics Today
  20. M. Aytouna, J. Paredes, N. Shahidzadeh-Bonn, S. Moulinet, C. Wagner, Y. Amarouchene, J. Eggers, and D. Bonn
    Drop formation in non-Newtonian fluids
    Phys. Rev. Lett. 110, 034501 (2013)
    link
  21. P. Steffen, C. Verdier, and C. Wagner
    Quantification of depletion induced adhesion of red blood cells
    Phys. Rev. Lett. 110, 018102 (2013)
    link
  22. S. Gier, S. Dorbolo, D. Terwagne, N. Vandewalle, and C. Wagner
    Bouncing of polymeric droplets on liquid interfaces
    Phys. Rev. E 86, 066314 (2012)
    link
  23. J. Kirch*, A. Schneider*, B. Abou, A. Hopf, U.F. Schaefer, M. Schneider, C. Schall, C. Wagner°, and C.M. Lehr°
    (*equal contribution, °equal contribution)
    Optical tweezers reveal relationship between microstructure and nanoparticle penetration of pulmonary mucus
    PNAS 109, 45, 18355–18360 (2012)
    link
  24. J. E. Fiscina, M. Pakpour, N. Vandewalle, C. Wagner, and D. Bonn
    Dissipation in quasistatically sheared wet and dry sand under confinement
    Phys. Rev. E 86, 020103 (2012)
    link
  25. S. Gier and C. Wagner
    Visualization of the flow profile inside a thinning filament during capillary breakup of a polymer solution via particle image velocimetry and particle tracking velocimetry
    Phys. Fluids 24, 053102 (2012)
    link
  26. L. Kaestner, P. Steffen, Duc Bach Nguyen, J. Wang, L. Wagner-Britz, A. Jung, C. Wagner, and I. Bernhardt
    Lysophosphatidic acid induced red blood cell aggregation in vitro
    Bioelectrochemistry 87, 89-95 (2012)
    link
  27. R. Sattler, S. Gier, J. Eggers, and C. Wagner
    The final stages of capillary break-up of polymer solutions
    Phys. Fluids 24, 023101 (2012)
    link
    Listed as one of the most read papers in 2012.
  28. A. Zell and C. Wagner
    Polymer solutions in co-rotating Taylor–Couette flow without vorticity
    Physica A: Statistical Mechanics and its Applications 391, 464 (2012)
    link
  29. D. B. Nguyen, L. Wagner-Britz, S. Maia, P. Steffen, C. Wagner, L. Kaestner, and I. Bernhardt
    Regulation of phosphatidylserine exposure in red blood cells
    Cellular Physiology and Biochemistry 28, 847 (2011)
    link
  30. P. Steffen, A. Jung, Duc Bach Nguyen, T. Müller, I. Bernhardt, L. Kaestner, and C. Wagner
    Stimulation of human red blood cells leads to Ca2+-mediated intercellular adhesion
    Cell Calcium 50, 54 (2011)
    link
  31. A. Zell, S. Gier, S. Rafaï, and C. Wagner
    Is there a relation between the relaxation time measured in CaBER experiments and the first normal stress coefficient?
    Journal of Non-Newtonian Fluid Mechanics 165, 1265 (2010)
    link
  32. M. Rheinstaedter, R. Sattler, W. Haeussler, and C. Wagner
    Dynamics of polymers in elongational flow studied by the neutron spin-echo technique
    Physica B: Condensed Matter 405, 3690 (2010)
    link
  33. A. Lindner and C. Wagner
    Viscoelastic surface instabilities
    Comptes Rendus Physique 10, 712 (2009)
    link
  34. A. Ziehl, J. Bammert, L. Holzer, C. Wagner, and W. Zimmermann
    Direct Measurement of Shear-Induced Cross-Correlations of Brownian Motion
    Phys. Rev. Lett. 103, 230602 (2009)
    link
  35. R. Sattler, C. Wagner, and J. Eggers
    Blistering Pattern and Formation of Nanofibers in Capillary Thinning of Polymer Solutions
    Phys. Rev. Lett. 100, 164502 (2008)
    link
    Highligthed in Pro-Physik and cross referenced in the Virtual Journal of Nanoscale Science & Technology
  36. J. P. Embs, C. Wagner , K. Knorr, and M. Luecke
    Measuring the Anomalous Dispersion Branch of Surface Waves on Ferrofluids
    Europhys. Lett. 78, 44003 (2007)
    link
  37. R. Sattler, A. Kityk, and C. Wagner
    Molecular configuration in droplet detachment of complex liquids
    Phys. Rev. E 75, 051805 (2007)
    link
  38. A. Kityk and C. Wagner
    Delay of disorder by diluted polymers
    Europhys. Lett. 75, 441 (2006)
    link
  39. C. Wagner, S. May, A. Kityk, A. Leschhorn, M. Luecke, and J. P. Embs
    Measuring the transverse magnetization of rotating ferrofluids
    Phys. Rev. E 73, 036302 (2006)
    link
  40. C. Wagner, Y. Amarouchene, D. Bonn, and J. Eggers
    Droplet detachment and bead formation in visco-elastic fluids
    Phys. Rev. Lett. 95, 164504 (2005)
    link
  41. A. V. Kityk, J. P. Embs, V. V. Mekhonoshin, and C. Wagner
    Spatiotemporal characterization of interfacial Faraday waves by means of a light absorption technique
    Phys. Rev. E 72, 036209 (2005)
    link
  42. P. Huber, V. P. Soprunyuk, J. P. Embs, C. Wagner, M. Deutsch, and S. Kumar
    Faraday Instability in a Surface-Frozen Liquid
    Phys. Rev. Lett. 94, 184504 (2005)
    link
  43. A. V. Kityk, H. W. Mueller, K. Knorr, and C. Wagner
    Spatio-temporal Fourier analysis of Faraday surface wave patterns on a two-liquid interface
    Europhys. Lett. 65, 857 (2004)
    link
  44. V. Bertola, B. Meulenbroek, C. Wagner, C. Storm, W. van Saarloos, and D. Bonn
    Experimental evidence to an intrinsic route to polymer melt fracture phenomena: a nonlinear instability of visco-elastic poiseuille flow
    Phys. Rev. Lett. 90, 114502 (2003)
    link
  45. C. Wagner, Y. Amarouchene, P. Doyle, and D. Bonn
    Turbulent Drag Reduction of polyelectrolyte (DNA) solutions: relation with the elongational viscosity
    Eur. Phys. Lett. 64, 823 (2003)
    link
  46. B. Meulenbroek, C. Storm, V. Bertola, C. Wagner, D. Bonn, and W. van Saarloos
    Intrinsic Route to Melt Fracture in Polymer Extrusion: A Weakly Nonlinear Subcritical Instability of Viscoelastic Poiseuille Flow
    Phys. Rev. Lett. 90, 024502/1 (2003)
    link
  47. C. Wagner, H. W. Mueller, and K. Knorr
    Pattern formation at the bicritical point of the Faraday instability
    Phys. Rev. E 68, 066204 (2003)
    link
  48. N. Puff, G. Debregas, J.-M. Dimeglio, D. Higgens, D. Bonn, and C. Wagner
    Stick-slip instability for viscous fingering in a gel
    Europhys. Lett. 58, 524 (2002)
    link
  49. A. V. Kityk, C. Wagner, K. Knorr, and H. W. Mueller
    Phase relaxation of Faraday surface waves
    Phys. Rev. E 65, 066304/1 (2002)
    link
  50. C. Wagner and H. W. Mueller
    Comment on "Superlattice, Rhombus, Square and Hexagonal Standing Waves in Magnetically Driven Ferrofluid Surface"
    Phys. Rev. Lett. 87, 189401/1 (2001)
    link
  51. A. Wernet, C. Wagner, D. Papathanassiou, H. W. Mueller, and K. Knorr
    Amplitude measurements of Faraday waves
    Phys. Rev. E 63, 036305/1-9 (2001)
    link
  52. J. P. Embs, H. W. Mueller, C. Wagner, K. Knorr, and M. Luecke
    Measuring the rotational viscosity of ferrofluids without shear flow
    Phys. Rev. E 61, R2196 (2000)
    link
  53. C. Wagner, H. W. Mueller, and K. Knorr
    Crossover from a square to a hexagonal pattern in Faraday surface waves
    Phys. Rev. E 62, R33 (2000)
    link
  54. C. Wagner, H. W. Mueller, and K. Knorr
    Faraday waves on a viscoelastic liquid
    Phys. Rev. Lett. 83, 308 (1999)
    link
  55. H. W. Mueller, H. Wittmer, C. Wagner, J. Albers, and K. Knorr
    Analytic Stability Theory for Faraday Waves and the Observation of the Harmonic Surface Response
    Phys. Rev. Lett. 78, 2357 (1997)
    link

Reviewed Contributions to Conference Proceedings

  1. P. Steffen and C. Wagner
    Investigation of erythrocytes cell-cell adhesion using holographic optical tweezers
    Clinical Biochemistry 42, 1856 (2009)
  2. L. Kaestner, W. Tabellion, A. Jung, E. Weiss, I. Bernhardt, C. Wagner, and P. Lipp
    Is there a calcium signalling in erythrocytes?
    Acta Physiologica 186, 198 (2006)
  3. D. Bonn, Y. Amarouchene, C. Wagner, S. Douady, and O. Cadot
    Turbulent drag reduction by polymers
    J. Phys.: Condens. Matter 17, S1195 (2005)
    link
  4. C. Wagner and A. Kityk
    Molecule configurations in a droplet detachement process of semidilute xanthane solutions
    XXI International Congress of Theoretical and Applied Mechanics ICTAM, IPPT PAN, Warsaw 2004, ISBN: 83-89687-01-1
    link

Visiting Scientists

  1. J.E. Fiscina, G. Lumay, F. Ludewig, and N. Vandewalle
    Compaction Dynamics of Wet Granular Assemblies
    Phys. Rev. Lett. 105, 048001 (2010)
    link

Other

  1. C. Misbah and C. Wagner
    Living fluids
    Comptes Rendues en Physique 14, 447 (2013)
    link
  2. C. Wagner and K. Knorr
    Musterselektion in der Faraday Instabilität
    Beiträge zur Experimentalphysik, Didaktk und computergestützte Physik
    S. Kolling [Hrsg.], Logos Verlag 2007, ISBN 978-3-8325-1530-0
  3. C. Wagner
    Tropfen, Perlen und Wellen: Strömungsforschung mit biophysikalischen Werkzeugen
    Magazin Forschung, Universität des Saarlandes, November 2005
  4. C. Wagner
    Musterselektion am bikritischen Punkt der Faradayinstabilität
    Doktorarbeit an der Universität des Saarlandes (2000)
  5. C. Wagner
    Aufbau einer Apparatur zur Untersuchung der Faradayinstabilität
    Diplomarbeit an der Universität des Saarlandes (1997)

Contact

Post address:
Saarland University
Campus, building E2 6
Post office box 15 11 50
D-66041 Saarbrücken
Administration:
Elke Huschens
Phone: +49 (0)681 302 - 2416
Fax: +49 (0)681 302 - 4676
Email: e.huschens(at)mx.uni-saarland.de