Liquid Cell TEM of Al Thin Film Corrosion under Potentiostatic Polarization

Computational Simulation of Galvanic Corrosion under the Thin Film of Electrolyte

corrodes. The metal with the higher OCP acts as a cathode. On the cathode, reduction takes place. In the case of galvanic corrosion it is termed as depolarization. Electrolyte enables transport of the ions and the conductive connection closes an electric circuit. Electric current flowing between the electrode and the electrolyte causes a shift in the electrode potential. This phenomenon is call...

Ultrafast polarization switching in thin-film ferroelectrics

We present an experimental approach to study the ultrafast polarization switching dynamics in thin-film ferroelectrics. A semiconductor photoconductive switch with femtosecond laser illumination is used as a ‘‘pulse generator’’ to produce jitter-free, sub-100 ps rise time step-function-like electrical pulses. Quantitative measurements yield a polarization switching time, ts , of ;220 ps when me...

Al-based Thin Film Quasicrystals and Approximants

Stability of an evaporating thin liquid film

We use a newly developed set of boundary conditions to revisit the problem of an evaporating thin liquid film. In particular, instead of the conventional Hertz–Knudsen– Langmuir equation for the evaporation mass flux we impose a more general equation expressing the balance of configurational momentum. This balance, which supplements the conventional conditions enforcing the balances of mass, mo...

Liquid crystals for organic thin-film transistors

Crystalline thin films of organic semiconductors are a good candidate for field effect transistor (FET) materials in printed electronics. However, there are currently two main problems, which are associated with inhomogeneity and poor thermal durability of these films. Here we report that liquid crystalline materials exhibiting a highly ordered liquid crystal phase of smectic E (SmE) can solve ...