The new nanomaterial converts more than 90% of light into heat. Free Technical Library News

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New nanomaterial converts more than 90% of light into heat

04.11.2014

Engineers at the University of California at San Diego (USA) have developed an innovative material that converts more than 90% of sunlight into heat.

Due to the unique structure of the nanoparticles that make up the material, it is able to withstand temperatures in excess of 700 °C and can be used outdoors for many years, even in high humidity.

The materials currently used in concentrating solar collectors have a short service life due to the deterioration of properties under the influence of thermal energy. Concentrating collectors use mirrors to focus light and convert it into electricity. The concentrated light heats the water, turning it into steam, which turns the turbine of a generator that generates electricity.

The newest material is based on silicon with a boron-based nanocoating. The coating is formed using particles of various sizes: from 10 nanometers to 10 micrometers, which allows the material to effectively absorb solar radiation while operating at high temperatures.

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You hear - virus 19.11.2001

Biochemists at the University of Cambridge (England) offer a new way to detect viruses - by sound.

A quartz piezocrystal is immersed in a liquid, for example, in a blood sample, where one or another virus is searched for, the surface of which is dressed with antibodies to this virus. Virus particles stick to antibodies. After that, the crystal is brought into oscillation, gradually increasing their frequency.

At a certain frequency, the viruses adhering to the antibodies begin to detach from the surface of the quartz, and this detachment process is accompanied by clicks that the ear cannot distinguish, but the electronics notice. If there were no viruses in the liquid, there will be no clicks. Successful experiments have been carried out on herpes viruses.

After the summer epidemic of FMD in the UK, the issue of rapid diagnosis of viral diseases is acute. It took up to five days to analyze the blood of sick animals. The new detector allows you to do this instantly. True, it will not come to its practical application immediately - debugging of the method is needed.

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