While working with helium nanodroplets, scientists have come across a surprising phenomenon: When the ultracold droplets hit a hard surface, they behave like drops of water. Ions with which they were previously doped thus remain protected on impact and are not neutralized.
Strong, lightweight and biocompatible foams glow in the dark when ultraviolet light is shone on them, chemists have discovered. This phosphorescence could have diverse applications, such as imaging biological samples under the microscope.
Scientists develop promising fabrication process for microneedle arrays capable of administering protein-based drugs subcutaneously without damaging the skin.
