Evolution of structural distortion in BiFeO thin films probed by second-harmonic generation.

BiFeO thin films have drawn much attention due to its potential applications for novel magnetoelectric devices and fundamental physics in magnetoelectric coupling. However, the structural evolution of BiFeO films with thickness remains controversial. Here we use an optical second-harmonic generation technique to explore the phase-related symmetry evolution of BiFeO thin films with the variation of thickness.

[Research progress on polymorphism in the merozoite surface protein-3alpha gene of Plasmodium vivax].

The merozoite surface protein-3alpha of Plasmodium vivax (PvMSP-3alpha) is a surface protein that is expressed during the asexual blood stages. With a high polymorphism, PvMSP-3alpha gene has been used as a suitable epidemiology and genotype marker. Moreover, it might be an important malaria vaccine candidate.