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Neural interface for controlling work with the power of thought

08.04.2023

Australian scientists have developed non-invasive biosensors that allow people to control various devices with their thoughts.

Engineers from the University of Technology Sydney have unveiled an advanced brain-computer interface. Through graphene sensors, researchers have achieved high conductivity, ease of use and reliability of the devices. The technology can be used to control jobs, prostheses, wheelchairs and machines.

The developers used graphene material combined with silicon to create wearable hard sensors. This approach has solved the problems of corrosion, durability and resistance to skin contact that have hampered everyday use of existing technologies, the engineers say.

Hexagonal graphene-patterned sensors are placed on the back of the head to detect waves from the visual cortex. Contacts are resistant to severe conditions, so they can be used in extreme conditions.

Devices are controlled using a special augmented reality lens installed in front of the user's eyes. White flickering squares are displayed on the screen. When the operator concentrates on a certain square, his brain waves are captured by the biosensor, and the decoder translates the signal into commands.

Our technology can issue at least nine commands in two seconds. This means that we have nine different types of commands, and the operator can choose one of these nine during this period of time, - said Chin-Teng Lin, a professor at the University of Technology Sydney and co-author of the development.

The researchers demonstrated the operation of the device to control the four-legged robot Ghost Robotics. The experiment showed that a trained operator can control the robot with up to 94% accuracy without the help of hands. Engineers believe that the development will find application in manufacturing, aerospace and healthcare.

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Found the oldest artificial cosmetics 17.09.2022

In China, archaeologists from the Chinese Academy of Sciences and the Shaanxi Academy of Archaeology have uncovered the remains of the world's earliest known cosmetics while excavating in the northwest province of Shaanxi.

During the excavations, the researchers found the so-called white lead. In antiquity it was one of the most important pigments. It is believed that the synthesis of such pigments contributed to the development of art and cosmetics throughout the world. In this case, an exceptional discovery is that the found white is recognized as the earliest in the history of mankind.

The remains of white cosmetics were found on the walls of a set of bronze items that were excavated from an ancient tomb on the territory of the modern village of Liandai. The burial is dated to the eighth century BC. The analysis of radioactive and stable carbon isotopes helped to identify whitewash, as well as clarify their age.

The results showed that synthesized lead white was already used in the territory of Ancient China in the Spring and Autumn Period (770-476 BC), that is, several hundred years earlier than such cosmetics began to be used in Ancient Greece.

"International researchers have different views on the origin of synthetic white lead in China," said Han Bin, the lead researcher. "Some believe that the Chinese technology is not of local origin and could have been imported from Europe or ancient Egypt."

However, a new study has shown that the synthesized white lead found in northwest China was produced by a precipitation method rather than the corrosion method practiced in ancient Greece. According to Khan, this indicates different approaches of different peoples to the manufacture of white, which indicates the independent origin and development of the synthesis of such pigments.

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