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The researchers have now been able to simulations simulations successfully into practice.

Engineers can produce complex components with the aid of rapid prototyping technology. This involves coating a surface with thin layers of special metal powder. A laser beam is heated – or sinters – the metal powder in the exact places baking cakes be fixed. ‘It’s like baking cakes,’says Andreas Burblies, spokesman for of Fraunhofer Numerical Simulation of Products, Processes Alliance. Any remaining loose powder is then removed. ‘The final product is an open-pored element,’explains Burblies. ‘Each point possesses exactly the right density and thus also a certain stability.

The procedure yields nanoelectrodes with a diameter of 100 nanometers, and a length of up to 30 microns.Because the nanotube is attached to a much larger probe, the researchers can manipulate the nanotube like a needle. The nanotube exactly where the nanotube penetrates a cell, for example, and even smaller cell locate structures such as the nucleus, or mitochondria. Detection of specific chemical species . ###The National Science Foundation and the University of Illinois funded the work.Contact: James E.