Can a person be made up of tissues with different DNA? Detailed answer

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Can a person be made up of tissues with different DNA? Detailed answer

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Can a person be made up of tissues with different DNA?

In 2002, Lydia Fairchild, an American divorced from her husband, underwent a DNA test, which showed that she was not the mother of her two children. At that time, she was already pregnant with a third, whose blood samples after birth showed that she was not a mother to him either. Further research revealed that Lydia is a chimera, that is, an organism that developed from a fusion at a very early stage of development of two eggs fertilized by different spermatozoa, and has different DNA sequences in different tissues.

Authors: Jimmy Wales, Larry Sanger

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Energy storage in microchips 17.02.2016

Researchers at Drexel University in the USA and Paul Sabatier University in France have developed a method for the industrial production of microchips with integrated microsupercapacitors. In other words, they combined the processor and power supply in one product.

"Our ambitious goal required a lot of time to implement. We wanted not just to reduce the size of the energy source to the size of a microchip, but to make it part of the latter," said Patrice Simon, a project participant from Paul Sabatier University. a way to introduce the production of such microsupercapacitors into the modern process of manufacturing semiconductor products". In the course of their work, the researchers encountered a number of problems. The most difficult of them turned out to be: ensuring the compatibility of the material of microsupercapacitors with materials of microchips, mechanical strength and durability.

The method developed by the researchers for applying carbon molecules to a silicon substrate turned out to be similar to the methods used in the modern microelectronic industry. In the laboratory, they learned how to deposit carbon wafers on silicon substrates of various sizes and configurations, creating dozens of micro-supercapacitors on them.

Supercapacitors are able to store large amounts of energy in a small volume, which makes them attractive for microelectronics. You can instantly "pump" energy into them, and you can extract it from them just as quickly. And their service life is practically unlimited.

“In the future, the results of our experiments can be easily seen, because they will help make consumer electronics lighter and more compact,” the project participants noted. “But, more importantly, the ability to store energy directly in chips will be useful for the further development of the Internet of things.”

The researchers added that the manufacturing method they developed allows micro-supercapacitors to be integrated into chips designed for devices of all sizes, from smartwatches to laptops.

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