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Cats can heal people

16.10.2016

A group of leading experts implemented a unique experiment of its kind, the result of which showed that cats can really heal people.

This information was provided by experts from clinical centers located in the United States of America and Germany. During the implementation of projects, doctors involved more than 10 thousand respondents. It turned out that in three out of four cases, cats prolong the life of their owners.

According to experts, this is due to the fact that the temperature of pets is slightly higher than that of people. Thus, cats warm the body of men and women, in addition, their purring is endowed with a therapeutic effect. The researchers said that the vibration that these pets create has a positive effect on the human body.

Doctors have recorded that cat owners suffer from heart disease 20% less often than other people. Pet owners live to a ripe old age in 70% of cases.

Cats are also useful for children, in particular, ensuring the correct functioning of their immune system. Babies who come into contact with cats are thus protected from allergies.

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Spintronics on silicon 11.10.2013

Spintronic devices may hold promise as non-volatile atomic scale devices by encoding information in terms of electron spin (either "up" or "down") rather than charge. This potentially makes it possible to create an ultra-low-energy circuit that remembers its state even when it is turned off.

Unfortunately, the compatibility of most of these so-called dilute magnetic semiconductors with silicon has not yet been reported. Now, new dilute magnetic semiconductors that are compatible with silicon at room temperature have been discovered by scientists at North Carolina State University (NCSU). Strontium stannate semiconductors have been successfully deposited onto a silicon substrate over a thin zirconium boundary layer.

"Dilute magnetic semiconductors are very promising for spintronic devices that store information in the magnetic spin of an electron," said Professor Jay Narayan of North Carolina State University. "Other materials, such as zinc oxide, are also dilute magnetic semiconductors, but they are not easily However, due to the fact that the cubic symmetry and lattice constant of strontium stannate are close to those of silicon, it can be easily integrated with silicon substrates."

Other research groups have also experimented with dilute magnetic semiconductors, but many of them have used Group III-V materials such as indium arsenide or gallium arsenide. Others have reported that germanium quantum dots may be compatible with silicon, but not at room temperature. Now the North Carolina State University lab reports compatibility with silicon at room temperature.

Ironically, the researchers, along with NC State University professor Justin Schwartz, were looking for a material not compatible with silicon for spintronics, but for a topological insulator—a semiconductor that has the properties of a dielectric but with a conductive surface layer. However, after studying strontium stannate, scientists found that it is also a dilute magnetic semiconductor.

"Strontium stannate has been theoretically predicted to be a topological insulator, and experimentally we have found certain characteristics of a topological insulator in thin films of strontium stannate," said Narayan. in an oxygen environment.

Next, the scientists plan to start forming spintronic transistors in this material to confirm the idea of using strontium stannate as a promising new direction in silicon semiconductors.

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