Prof. Dr. Werner Pesch (emer.)

email: werner.pesch@uni-bayreuth.de

phone: (+49)-(0)921 / 55-3214

fax: (+49)-(0)921 / 55-2991

Recent Work

W.Pesch and A. Krekhov " Optical analysis of spatially periodic patterns in nematic liquid crystals: diffraction and shadowgraphy ", to appear in Phys.Rev.E, 2013

A. Buka, T. Toth-Katona, N. Eber, A.Krekhov, and W.Pesch " The role of flexoelectricity in pattern formation ", Chapt. 4 in Flexoelectricity in Liquid crystals, World Scientific, 2013

A.Krekhov, W.Pesch, and A. Buka "Comment on: ``On the threshold characteristics of the flexoelectric domains in a homogeneous electric field: The case of anisotropic elasticity'' by Y.G. Marinov and H.P. Hinov, ", Euro.Phys.J E, 31 , 179-189, (2011)}

A.Krekhov, W.Pesch, and A. Buka " Flexoelectricity and and pattern formation in nematic liquid crystals ", Physical Review E, 83 ,051706(2011)

G.Freund, W.Pesch, and W. Zimmermann " Rayleigh-Bénard convection in the presence of spatial temperature modulations ", J. Fluid Mech. 673 , 318-348 (2011). G. Ahlers, B. Dressel, J. Oh, and W. Pesch " Strong non-Boussinesq effects near the onset of convection in a fluid near its critical point ", J. Fluid Mech. 642 , 15-48 (2010). J.H. McCoy, W. Brunner, W. Pesch, and E. Bodenschatz " Selforganization of topological defects due to applied constraints ", Phys. Rev. Lett. 101 , 254102 (2008) G. Seiden, S. Weiss, J. H. McCoy, W. Pesch, and E. Bodenschatz " Pattern Forming System in the Presence of Different Symmetry-Breaking Mechanism ", Phys.Rev.Lett. 101 , 214503 (2008) A. Krekhov, W. Pesch, N. Eber, T. Toth-Katona and A. Buka " Nonstandard electroconvection and flexoelectricity in nematic liquid crystals ", Phys. Rev. E 77 , 021705 (2008) W. Pesch, D. Palaniappan, J. Tao, and F. H. Busse, " Convection in heated fluid layers subjected to time periodic horizontal accelerations ", J. Fluid. Mech., 596 , 313 (2008) K. E. Daniels, O. Brausch, W. Pesch and E. Bodenschatz, "Competition and bistability of ordered undulations and undulation chaos in inclined layer convection ", J. Fluid. Mech. , 597 , 261 (2008) A. Buka, N. Eber, W.Pesch and L. Kramer, " Isotropic and anisotropic electroconvection ", Physics Reports, 448 , 115-132 (2007) Sheng-Qi Zhou, N. Eber, A. Buka, W.Pesch and G. Ahlers, "Onset of electro-convection of homeotropically aligned nematic liquid crystals ", Phys.Rev. E 74 , 046211 (2006) W. Pesch, L. Kramer, N. Eber and A. Buka, "The Role of Initial Conditions in the Decay of Spatially Periodic Patterns in a Nematic Liquid crystal ", Phys.Rev. E 73 , 061705 (2006) S. Madruga, H. Riecke and W. Pesch "Reentrant Hexagons in non-Boussinesq Convection ", J.Fluid.Mech, 548 , 341 (2006) F. Busse and W. Pesch "Thermal Convection in a Twisted Magnetic Field ", Geophys. Astrophys. Fluid Dyn., 100 , 139 (2006) S. Madruga, H. Riecke and W. Pesch "CGL Defect Chaos and Bursts in Hexagonal Rotating non-Boussinesq Convection ", Phys.Rev.Lett. 96 , 074501 (2006) A. Buka, N. Eber and W. Pesch "Convective Patterns in Liquid Crystals Driven by Electric Field ", NATO Science Series "Self-assembly, pattern formation and growth phenomena in nano-systems" Eds: A.A.Golovin, A.A.Nepomnyashchy, Springer 2006, pp.55-82. and electronic-Liquid Crystals Communications (http://www.e-lc.org), July, 2005 J. L. Rogers, W. Pesch, O. Brausch and M. Schatz, "Complex-Ordered Patterns in Shaken Convection ", Phys. Rev. E, 71 , 066214 (2005) N. Eber, S.A. Rozanski, S. Nemeth, A. Buka, W. Pesch and L. Kramer "Decay of Spatially Periodic Patterns in a Nematic Liquid Crystal ", Phys. Rev. E, 70 , 061706 (2004) A. Buka, B. Dressel, L. Kramer and W. Pesch, "Direct transition to electroconvection in a homeotropic nematic liquid crystal" , Chaos, 14 , 793 (2004) A. Buka, B. Dressel, L. Kramer and W. Pesch, "Isotropic convection scenarios in an anisotropic fluid" , Phys. Rev. Lett., 93 , 044502 (2004) Th. Walter, W. Pesch and E. Bodenschatz "Dislocation Dynamics in Rayleigh-Bénard Convection ", Chaos; 14 , 933 (2004) J. L. Rogers, M. F. Schatz, W. Pesch, O. Brausch "An Initial Look at Acceleration-Modulated Thermal Convection ", in "New Directions in Statistical Physics-Applications in Econophysics, Bioinformatics and Pattern Recognition", L. T. Wille, ed., Berlin, Springer (2004) E. Kurt, F.H. Busse and W. Pesch, "Hydromagnetic Convection in a Rotating Annulus with an Azimuthal Magnetic Field ", J. Theor. Comp. Fluid Dyn. , 18 , 251 (2004) M. Hilt, W. Pesch and W. Zimmermann, "Two paradigms of spatiotemporal chaos: Spirals in convection and waves on biomembranes ", NIC-Symposium 2004, Hrsg.: D. Wolf, G. Münster, M. Kremer, NIC Series Vol. 20, ISBN 3-00-012372-5, Verlag John von Neumann-Institut für Computing, Jülich Yuan-Nan Young, H. Riecke and W. Pesch "Whirling Hexagons and Defect Chaos in Hexagonal Non-Boussinesq Convection ", New J. Phys., 67 , 135 (2003) B. Dressel and W. Pesch "Competion between electroconvection and Freedericksz distortions in nematics with slightly positive dielectric anisotropy ", Phys. Rev. E, 67 , 031707 (2003) J. L. Rogers, M. F. Schatz, and W. Pesch, "Pattern formation in vertically oscillated convection" , Nonlinearity, 16 , C1 (2003) A. Buka, B. Dressel, W. Otkowski, K.Camara, T. Toth-Katona, L. Kramer, J. Lindau, G. Pelzl and W. Pesch, "Electroconvection in nematic liquid crystals with positive dielectric and negative conductivity anisotropy ", Phys. Rev. E 66 , 051713 (2002), K. M. J. Bajaj, G. Ahlers and W. Pesch. "Rayleigh-Bénard convection with rotation at small Prandtl numbers. ", Phys. Rev. E, 65 , 056309 (2002) B. Dressel, L. Pastur, W. Pesch, E. Plaut, and R. Ribotta "On the competition between periodic and homogeneous modes in spatio-temporal pattern formation ", Phys. Rev. Lett., 88 , 024503 (2002) R. Schmitz, W. Zimmermann and W. Pesch, Spiral Defect Chaos: Swift-Hohenberg model versus Boussinesq equations ", Phys. Rev. E, 65 , 037302 (2002) C. Voeltz, W. Pesch and I. Rehberg, "Rayleigh-Taylor instability in a sedimenting suspension ", Phys. Rev. E, 65 , 011404 (2002) J. L. Rogers, O. Brausch, W. Pesch and M. F. Schatz, "Superlattice patterns in vertically oscillated thermal convection" , Phys. Rev. Lett., 85 , 4281 (2000) D. A. Egolf, I. V. Melnikov, W. Pesch, and R. E. Ecke, "Mechanism of Extensive Spatiotemporal Chaos in Rayleigh-Bénard Convection" , Nature, 404 , 733 (2000) E. Bodenschatz, W.Pesch and G. Ahlers, "Recent Developments in Rayleigh-Bénard Convection" , Annu. Rev. Fluid Mech. 32 , 709-778 (2000). F.H. Busse, O. Brausch, M. Jaletzky and W. Pesch, "Phase turbulence and Heteroclinic Cycles" in "Intermittency in Turbulent Flows", J.C. Vassilikos , ed., Cambridge University Press, 2000 L. Kramer and W. Pesch, "Electrohydrodynamic Convection in Nematics" , in "Physical properties of liquid crystals, Vol. 1", D.A. Dunmur, A. Fukuda, and G.R. Luckhurst eds., EMIS Datareview Series, 2000 L. Kramer, B. Dressel, H. Zhao and W. Pesch, Theory of Electroconvection for the Gourmet ", Mol. Cryst. and Liq. Cryst, 368 , 101, 2000 (Proceedings of the ILCC2000, Sendai, Japan ) S. Sakurai, A. Tschammer, W. Pesch and G. Ahlers, "Rayleigh-Bénard Convection in the Presence of a First-Order Phase Change", Phys. Rev. E, 60 , 539 (1999) E. Plaut and W. Pesch: "Extended Weakly Nonlinear Theory of Planar Nematic Convection", Phys. Rev. E, 59 , 1747, (1999) L. Thomas, W. Pesch and G. Ahlers: "Rayleigh-Bénard convection in a homeotropically aligned nematic liquid crystal", Phys. Rev. E, 58 , 5885 (1998) Y. Hu, W. Pesch, G. Ahlers and R. E. Ecke, "Convection Under Rotation for Prandtl Numbers Near One: Küppers-Lortz Instability", Phys. Rev. E, 58 ,5821 (1998) B.B. Plapp, D. A. Egolf, E. Bodenschatz and W.Pesch, "Dynamics and Selection of Giant Spirals in Rayleigh-Bénard Convection" , Phys. Rev. Lett., 81 , 5334 (1998) W. Pesch and U. Behn, "Electrohydrodynamic Convection in Nematics" in "Evolution of Spontaneous Structures in Dissipative Continuous Systems" F. H. Busse and S. C. Mueller, eds., Springer, 1998 In Preparation W. Brunner, J. McCoy, W. Pesch and E. Bodenschatz, "Hexaroll chaos in inclined layer convection ", Preprint A. Moroz, W. Pesch, H. Riecke, "Stability of Hexagons in non-Boussinesq Convection ", to be submitted to Phys. Rev. E.   Back to the Homepage of ... ... Theoretical Physics II ... Theoretical Physics at the University of Bayreuth