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Eternal microgravure on diamond

05.03.2005

Scientists from the Institute for Solid State Physics and Materials Science in Dresden (Germany) have developed a way to store documents in supermicroscopic form indefinitely.

On a diamond film deposited from a carbon plasma, text or a picture is engraved with a tunneling microscope needle. When a voltage is applied to the needle, the diamond film is bombarded by electrons flowing from the needle. Where a jet of electrons hits the film, the diamond turns into graphite. The density of graphite is less than that of diamond, so at this point a tubercle of carbon atoms is obtained.

Ten thousand of these tubercles can form a square image with a side of 1,2 micrometers, for the reproduction of which, again, it is necessary to scan it with the needle of a tunneling microscope. With such a density of information recording, one postcard can contain photographs of all six billion inhabitants of the Earth.

The authors of the method claim that due to the exceptional stability of graphite and diamond, records can be stored for many millennia.

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Laser shoe fitting 11.03.2006

The technology created by Europeans will help to make more comfortable shoes.

Old-timers say that there was a time when X-ray machines were in shoe stores, with which you could check how well the shoes fit the foot. Then, due to the obvious harmfulness of this method, the devices were removed, and for many years it was possible to choose the right shoes only by touch.

Engineers from the Spanish Institute of Technology for Shoes (INESCOP) decided to correct the situation with the support of the European Commission. The problem of improving the quality of shoes and boots for Europeans is very relevant: now only 800 million pairs are sewn on the continent, while Asians supply twice as many to the world market. By making shoes more comfortable, European shoemakers hope to win the competition.

“Traditionally, shoe manufacturers are interested in mass production, not customer convenience,” says project leader Enrique Montiel. “We have created hardware and software that allows you to quickly scan a foot with a laser and create a three-dimensional computer model of it.

As a result, a personal approach is possible.” Thanks to this technology, shoe manufacturers will be able to improve the shape of lasts, apparently generalizing the data on the shape of their customers' feet.

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