Unusual transport properties of ferromagnetic Heusler alloy Co$_2$TiSn

Unusual vortex structure in ultrathin Pb(Zr$_{0.5}$Ti$_{0.5}$)O$_3$ films

Unusually High Thermal Conductivity of Carbon Nanotubes

Unusually large enhancement of thermopower in an electric field induced two-dimensional electron gas

Unusually strong space-charge-limited current in thin wires

Unveiling a two-dimensional electron gas with universal subbands at the surface of SrTiO3

Unveiling the ac Dynamics of Ferroelectric Domains by Investigating the Frequency Dependence of Hysteresis Loops

Unzipping graphene: Extendend defects by ion irradiation

Up-conversion injection in Rubrene/Perylene-diimide-heterostructure electroluminescent diodes

Upcoming planetary missions and the applicability of high temperature superconductor bolometers

Upcoming planetary missions and the applicability of high temperature superconductor bolometers

Upper bound on the disordered density of sphere packing and the Kepler Conjecture

Upper limit to magnetism in LaAlO3/SrTiO3 heterostructures

Upscaled phase-field models for interfacial dynamics in strongly heterogeneous domains

Uranium at High Pressure from First Principles

Urchin-inspired zinc oxide as building blocks for nanostructured solar cells

Use of a nanoindentation fatigue test to characterize the ductile-brittle transition

Use of a Virtual Laboratory to plan, execute and analyse Neutron Strain Scanning experiments

Use of optically detected magnetic resonance to correlate germanium electron centers with UV absorption bands in X-ray irradiated germanosilicate glasses

Use of real-time Fourier Transform Infrared Reflectivity as an in situ monitor of YBCO film growth and processing