Field-Induced Assembly and Propulsion of Colloids.

Electric and magnetic fields have enabled both technological applications and fundamental discoveries in the areas of bottom-up material synthesis, dynamic phase transitions, and biophysics of living matter. Electric and magnetic fields are versatile external sources of energy that power the assembly and self-propulsion of colloidal particles. In this Invited Feature Article, we classify the mechanisms by which external fields impact the structure and dynamics in colloidal dispersions and augment their nonequilibrium behavior.

A photoanode with hierarchical nanoforest TiO structure and silver plasmonic nanoparticles for flexible dye sensitized solar cell.

Due to unique photovoltaic properties, the nanostructured morphologies of TiO on flexible substrate have been studied extensively in the recent years for applications in dye sensitized solar cells (DSSCs). Microstructured electrode materials with high surface area can facilitate rapid charge transport and thus improve the light-to-current conversion efficiency. Herein we present an improved photoanode with forest like photoactive TiO hierarchical microstructure using a simple and facile hydrothermal route.