The Quantum Hall Effect: after 20 years still a challenge for theory and experiment -- Measuring the fractional charge and its evolution -- Bloch electrons in a magnetic field: Hofstadter's butterfly -- Scaling in the Integer Quantum Hall Effect: interactions and low magnetic fields -- Anisotropic state of two-dimensional electron gas in high Landau levels -- Composite fermions in quantum hall systems near ?=1/2 -- Quantum wires as Luttinger liquids: experiment -- Quantum wires as Luttinger liquids: theory -- Flow equations for Hamiltonians -- Disorder, electron-electron interactions and the metal-insulator transition in heavily doped Si:P -- The numerical renormalization group method for correlated electrons -- Characerization and manipulation of carbon nanotubes by scanning force and scanning tunnelling microscopy -- Analysis of single wall carbon nanotubes by Raman scattering -- Electronic structure of carbon nanotubes -- Luttinger liquid behavior in carbon nanotubes -- Lattice dynamical effects on the peierls transition in one-dimensional metals and spin chains -- Electronic structure and ordered phases in transition metal oxides: application of the dynamical mean-field theory -- Energy and phase relaxation in non-equilibrium diffusive nano-wires with two-level systems -- Beyond the tunneling model-Elastic properties of vitreous silica at low temperatures -- Rashba spin-splitting and ferromagnetic electrodes on InAs -- Electrical spin-injection into semiconductors-from cobalt contacts to semiconductor spin aligners -- Nb/InAs(2DEG)/Nb hybrid quantum structures -- The excitation spectrum of mesoscopic proximity structures -- Molecular-dynamics simulations of martensitic transformations -- Structural and magnetic phase transitions in Ni?Mn?Ga shape-memory alloys -- Martensitic transformations studied on nano-and microscopic length scales -- Nanocrystallization of Al-rich metallic glasses -- Structuring thin films via ion beams -- Periodic application of the sequence 'growth and ion-induced stress relaxation': A way to prepare stable, thick films of cubic boron nitride -- Ion assisted deposition of thin layers -- Interreaction of metals-The dominant influence of microstructure -- Computer simulations of the dynamics in glasses and melts -- Fast relaxation in viscous liquids -- Confined optical modes in photonic molecules and crystals -- Microwave studies of chaotic billiards and disordered systems -- Tunable photonic crystals -- Photonic crystals from macroporous silicon -- Optical spectroscopy on single quantum dots -- Index-guided long-wavelength InGaAIAs/InP vertical-cavity surface-emitting lasers -- Quantum dots for GaAs-based surface emitting lasers at 1300 nm -- (GaIn) (NAs)/GaAs vertical-cavity surface-emitting lasers with high performance -- High performance selectively oxidized VCSELs and arrays for parallel high-speed optical interconnects -- GaSb/AlGaSb VCSEL structures and microcavities in the 1.5 ?m wavelength range -- Group III-Nitride heterostructures: From materials research to devices -- Flat panel displays: introduction and LCDs-from physics to technology -- Concerning the pairing mechanism in high-T c Superconductors-a status report -- High trapped fields in bulk YBCO superconductors -- Fermi surface mapping of Bi-2212 using high resolution angle-scanned photoemission -- Superconducting rare earth transition metal borocarbides -- Magnetism and superconductivity in granular platinum at low temperatures -- Bi 2223 tape processing -- AC properties of high-temperature superconductors -- HTS Josephson junctions as electromagnetic sensors for low and high frequencies -- Charge carrier dynamics-a key factor for fast organic photorefractive materials -- Organic semiconductors: fundamentals and applications -- The hard physics of soft matter -- Statistical physics of learning: Phase transitions in multilayered neural networks.