Prof. Dr. Konrad Samwer

++49 - 551 - 39 7601 e-mail homepage (http://www.uni-goettingen.de/de/42094.html) Georg-August-Universität Göttingen I. Physikalisches Institut Friedrich-Hund-Platz 1 37077 Göttingen Germany

PCGG activities

Ongoing and Planned Research Group Interaction(s) within the Graduate School

• The Griesinger Group
• The Krebs Group
• The Buback Group
• The Kirchheim Group
• The Zippelius Group

• Mechanical spectroscopy of polymers and metallic glass formers

• ♦ M. Schwabe, R. Rotzoll, S. Küchemann, K. Nadimpalli, P. Vana, K. Samwer, Relaxation processes of poly(tert.-butyl acrylate) chemically confined via hydrogen bonds, Macromol. Chem. Phys. 2010, 211, 1673-1677.
• ♦ J. Hachenberg, D. Bedorf, K. Samwer, R. Richert, A. Kahl, M. D. Demetriou, W. L. Johnson, Merging of the alpha and beta relaxations and aging via the Johari-Goldstein modes in rapidly quenched metallic glasses, Appl. Phys. Lett. 2008, 92, 131911.
• ♦ J. Hachenberg, B. Steisel, U. Nergui, D. Bedorf, M. Buback, K. Samwer, Effect of Chemical Confinement on the mechanical relaxation spectra of poly(ethene-co-methacrylic acid) copolymers, Int. J. Mater. Res. 2008, 99, 502-506.
• ♦ J. Hachenberg, K. Samwer, Indications for a slow β-relaxation in a fragile metallic glass, J. Non-Crys. Solids 2006, 352, 5110-5113.
• ♦ P. Rösner, J. Hachenberg, K. Samwer, R. Wehn, P. Lunkenheimer, A. Loidl, E. Süske, T. Scharf, H. U. Krebs, Comparision of mechanical and dielectric relaxation processes in laser-deposited poly(methyl methacrylate) films, New J. Phys. 2006, 8, 89.
• ♦ M. D. Demetriou, J. S. Harmon, M. Tao, G. Duan, K. Samwer, W. L. Johnson, Cooperative shear model for the rheology of glass-forming metallic liquids, Phys. Rev. Lett. 2006, 97, 065502.
• ♦ U. N. Nehete, H. W. Roesky, H. Zhu, S. Nembenna, H. Schmidt, M. Noltemeyer, D. Bogdanov, K. Samwer, Polyhedral Cobalt(II) and Iron(II) Siloxanes: Synthesis and X-ray Crystal Structure of [(RSi(OH)O2)Co(OPMe3)]4 and [(RSiO3)2(RSi(OH)O2)4(μ3-OH)2Fe8(THF)4] (R = (2,6-iPr2C6H3)N(SiMe3)), Inorg. Chem. 2005, 44, 7243-7248.
• ♦ W. L. Johnson, K. Samwer, A universal criterion for plastic yielding of metallic glasses with a (T/T-g)(2/3) temperature dependence, Phys. Rev. Lett. 2005, 95, 195501.
• ♦ U. N. Nehete, G. Anantharaman, V. Chandrasekhar, R. Murugavel, M. G. Walawalkar, H. W. Roesky, D. Vidovic, J. Magull, K. Samwer, B. Sass, Polyhedral Ferrous and Ferric Siloxanes, Angew. Chem. Int. Ed. 2004, 43(29), 3832-3835.
• ♦ P. Rösner, K. Samwer, P. Lunkenheimer, Indication for an "excess wing" in metallic glasses from the mechanical loss modulus in Zr₆₅Al_7,5Cu_27,5, Europhys. Lett. 2004, 68, 226.
• ♦ J. Hachenberg, C. Streng, E.Süske, S. Vauth, S. G. Mayr, H.-U. Krebs, K. Samwer, Kinetic roughening of laser deposited polymer films: Crossover from single particle character to continuous growth, Phys. Rev. Lett. 2004, 92, 246102.
• ♦ P. Rösner, K. Samwer, R. O. Pohl, S. Schneider, Use of a double-paddle oscillator for the study of metallic films at high temperatures, Rev. Sci. Instr. 2003, 74, 3395.

• Talk: Jan 13 2010 Introduction to the physics of liquids and glasses (Introductory Lecture WS 2009/2010 - Polymer Coils)
• Talk: Nov 21 2007 Viscoelasticity and non-Newtonian behaviors in polymers (Introductory Lecture WS 2007/2008 - Polymer Coils)
• Talk: Nov 14 2007 Introduction to the physics of liquids and glasses (Introductory Lecture WS 2007/2008 - Polymer Coils)
• Talk: Jan 04 2006 Viscoelasticity and non-Newtonian behaviors in polymers (Introductory Lecture WS 2005/2006 - Polymer Coils)
• Talk: Dec 13 2005 Glas - ein alter Werkstoff, aber aktuelle Physik (mit Experimenten) (Other Events WS2005/2006)
• Talk: Nov 09 2005 Introduction to the physics of liquids and glasses (Introductory Lecture WS 2005/2006 - Polymer Coils)
• Talk: Jan 14 2004 1. The Glass Transition 2. Viscoelasticity (Introductory Lecture WS 2003/2004)

• Glass_Transition_and_Viscoelasticity.ppt: 977920 Byte Lecture Notes