"People believe that the best computers are handled by electrical signals and transmitted by light signals," said Swadick Karl, associate professor of physics at Northeastern University. For this reason, people urgently need a chip integration device that can use both light input and electrical input for logic operation. The paper published in the latest issue of Nature Photonics by scientists from Northeastern University and Kyung Hee University in South Korea shows that for the first time, they integrated the electronic and optical properties on an electronic chip, and developed a series of chips based on it. The innovative equipment provides a scalable platform for the manufacture of hybrid optoelectronic logic components and represents a key breakthrough in the future of photovoltaic computer manufacturing. Last year, Karl and his associate professor Rong Junzhong of the School of Mechanical and Industrial Engineering found out that if carbon nanotubes are connected to silicon, light-induced currents are generated at the interface faster than silicon-metal interfaces in traditional photodiodes. . "This ability to allow a sudden surge in currents helps us design advanced equipment that uses optical switches," Karl said. According to the report of the Physicists Organization Network on February 25th, they used this discovery to develop a new logic device based on photodiodes. With the hybrid connection of carbon nanotubes and silicon, it is possible to use both light and electricity inputs. To control the output current. They also collaborated with Yongkun, the teaching authority of Kyung Hee University in South Korea, to run these connected computational models. These newly developed innovative devices include three new components and an upgraded device. The first is the AND-gate, which requires both electronic and optical input to produce an output. This switch requires two factors to be active at the same time; the second is the OR-gate. , as long as one of the two photoreceptors input, it will produce an output; the third is a 4-bit photoelectric digital-analog converter that can be used to convert digital signals to analog signals, such as converting the digital content of MP3 files. Into real music, this ability is very important. The upgrade equipment is to integrate 250,000 microchips on a wafer of about 1 cm square, just like the front end of a camera sensor. Although this device is fully functional and requires more microchips, it can now be used to test whether their assembler program is repeatable. Researchers point out that even if the computer wants to output the simplest results, it must process billions of calculation steps every second. What happens if each step is faster? Carl said that to improve their ability to handle these steps, we must start from a single step. This is what we do.
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