Light-Carved ‘Nano-Volcanoes’ Hold Promise for Drug - TopicsExpress

Light-Carved ‘Nano-Volcanoes’ Hold Promise for Drug Delivery Researchers from North Carolina State University have developed a method for creating “nano-volcanoes” by shining various colors of light through a nanoscale “crystal ball” made of a synthetic polymer. These nano-volcanoes can store precise amounts of other materials and hold promise for new drug-delivery technologies. The researchers create the nano-volcanoes by placing spherical, transparent polymer nanoparticles directly onto the flat surface of a thin film. They then shine ultraviolet light through the transparent sphere, which scatters the light and creates a pattern on the thin film. The thin film is made of a photoreactive material that undergoes a chemical change wherever it has been struck by the light. The researchers then submerge the thin film in a liquid solution that washes away the parts of the film that were exposed to light. The material that remains is shaped like a nanoscale volcano.

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