A simple process is developed to curl graphene membranes through thermal annealing. The resulting curled graphene ribbons displayed enhanced photocurrent response compared to flat graphene ribbons. The annealing temperature, the thickness of the graphene, and the type of polymethyl methacrylate used were the three key factors that influenced the morphology of graphene during thermal annealing. ...

Formation of domain walls in ferroelectrics is not energetically favourable in low-dimensional systems. Instead, vortex-type structures are formed that are driven by depolarization fields occurring in such systems. Consequently, polarization vortices have only been experimentally found in systems in which these fields are deliberately maximized, that is, in films between insulating layers. As s...

A recent study reveals that the intraerythrocytic asexual reproduction cycle of Plasmodium falciparum ends with the ruptured erythrocyte membrane curling outwards, buckling, everting and vesiculating. Analogy with the sequence seen during spontaneous inside-out vesiculation of erythrocyte membranes suggests that the parasite co-opts pre-existing cytoskeletal conformations to facilitate terminal...

TO THE EDITOR Hair loss or hair color change in patients taking valproate has been repeatedly reported. However, drug-induced hair texture changes have been reported rarely. Curly hair is a very rare side effect of valproate. Valproate is recommended for the acute treatment of mania and maintenance of bipolar disorder as a mood stabilizer. Valproate can be used also in the treatment of epilepsy...