Artificial implants such as pacemakers often cause complications because the body identifies them as foreign objects. Researchers have now demonstrated a simple method to fabricate cellulose-sheaths for implants, whose micro-structured surface makes them especially biocompatible.
A new composite material which prevents metal corrosion in an environmentally friendly way, even under extreme conditions is presented. It can be used wherever metals are exposed to severe weather conditions, aggressive gases, media containing salt, heavy wear or high pressures.
Researchers have successfully demonstrated how to both enhance light emission and capture light from metamaterials embedded with light emitting nanocrystals. The breakthrough could lead to a range of applications including ultrafast LEDs, nanoscale lasers and efficient single photon sources.
One way of removing harmful nitrate from drinking water is to catalyse its conversion to nitrogen. This process suffers from the drawback that it often produces ammonia. By using palladium nanoparticles as a catalyst, and by carefully controlling their size, this drawback can be partially eliminated.
Bisher konnten Wissenschaftler nur theoretisch modellieren, ob und wie sich die interne Struktur einer Flüssigkeit an der Oberfläche eines Nanopartikels verändert. Physikern ist nun erstmals der experimentelle Nachweis gelungen.
A new insight into the fundamental mechanics of the movement of molecules offers a surprising view of what happens when you pour a liquid out of a cup. More important, it provides a theoretical foundation for a molecular-level process that must be controlled to ensure the stability of important protein-based drugs at room temperature.
Due to their nanoscale dimensions and sensitivity to light, quantum dots are being used for a number of bioimaging applications including in vivo imaging of tumor cells, detection of biomolecules, and measurement of pH changes.
Instead of making their microscopes more powerful, researchers have discovered a method that enlarges tissue samples by embedding them in a polymer that swells when water is added. This allows specimens to be physically magnified, and then imaged at a much higher resolution.
Researchers have built a rice grain-sized laser powered by single electrons tunneling through artificial atoms known as quantum dots. The tiny microwave laser, or 'maser', is a demonstration of the fundamental interactions between light and moving electrons.