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Kolloquium

Thema:

Controlling nanomaterials and their interfaces for biology applications

Datum:

17.12.18

Uhrzeit:

16:15

Ort:

H6

Vortragender:

Prof. Jean-Francois Berret

Laboratoire Matie?re et Syste?mes Complexes, UMR 7057 CNRS Universite? Denis Diderot Paris-VII

Inhalt:

Engineered nanomaterials are essential components in the development of nanotechnologies. In this lecture, I will discuss the use of nanomaterials, including nanoparticles for applications in nanomedicine and biophysics. I will provide examples of particles used as diagnostic and therapeutic agents for the treatment of major diseases. I will also talk about inhaled pollution particles emitted by industrial activities and about their impact on human health. On the physical chemistry side, emphasis will be put on strategies developed in my group to control particle interfaces. It is now recognized that these interfaces determine for a significant part their fate in biological environments. Finally, I will show how in some conditions particles can be translated into nano- and microdevices and manipulated to allow the measurements of physical quantities of biological materials (such as viscosity and elasticity).

Ansprechpartner:

W. Pfeiffer

Kolloquium Mathematische Physik

Thema:

tba

Datum:

01.02.19

Uhrzeit:

16:15

Ort:

U2-228

Vortragender:

Martin Zirnbauer

University of Cologne

Inhalt:

Ansprechpartner:

G. Akemann

Seminar Hochenergiephysik

Thema:

Extracting topology from lattice QCD near Tc

Datum:

18.12.18

Uhrzeit:

14:15

Ort:

D6-135

Vortragender:

Rasmus Larsen

BNL, Upton, NY, USA

Inhalt:

We report our study on the properties of the topological structures present in the QCD medium around the critical temperature Tc. We use dynamical domain wall fermion configurations on lattices of size $32^3x8$ and detect the topological structures through the zero modes of the overlap operator. We explicitly show that the properties of the zero modes of the QCD Dirac operator agrees well with that of calorons with non-trivial holonomy. Different profiles of the zero modes are observed, and when we change the boundary condition of the overlap operator in the temporal direction, the zero mode moves to another location . All of this indicates the presence of instanton-dyons in the hot QCD medium around Tc, where the distance between dyons control the shape and extent of the zero modes.

Ansprechpartner:

Ch. Schmidt

Seminar Kondensierte Materie

Thema:

tba

Datum:

24.01.19

Uhrzeit:

14:15

Ort:

D5-153

Vortragender:

Oliver Waldmann

Universitaet Freiburg

Inhalt:

Ansprechpartner:

Jürgen Schnack

Seminar Mathematische Physik

Thema:

tba

Datum:

20.12.18

Uhrzeit:

15:00

Ort:

D5-153

Vortragender:

Yanik-Pascal Foerster

Bielefeld University

Inhalt:

Ansprechpartner:

Gernot Akemann

Seminar AG Zufallsmatrizen

Thema:

The level spacing distribution at the hard edge

Datum:

28.11.18

Uhrzeit:

16:15

Ort:

V3-201

Vortragender:

Valentin Gorski

Bielefeld University

Inhalt:

The level spacing distribution in the bulk of a spectrum is approximately given by the Wigner surmise. Yet, at the hard and the soft edge one can expect strong deviations from these laws. Using the orthogonal polynomial method we derive the spacing distribution of the smallest two singular values of the chiral Gaussian unitary ensemble (chGUE) at finite matrix dimension with additional characteristical polynomials in the weight. The number of these polynomials represents the number of flavors (types of quarks) in the physical system. This ensemble approximates the Euclidean Dirac operator in Quantum Chromodynamics (QCD). In my talk, I will report on the behavior of the level spacing distribution in this particular setting.

Ansprechpartner:

Gernot Akemann



  • @ 2008 Uni Bielefeld
  • | Letzte Änderung: 23.11.2011
  •  Olaf Kaczmarek
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