The most intractable thing in the semiconductor circle is that Moore's Law is coming to an end. Researchers have to look for alternatives to silicon to improve the performance of semiconductors. Carbon nanotubes are considered one of the most promising materials to replace silicon.
Recently, the University of Wisconsin-Madison has made a leap breakthrough in the research and development of this material. Its materials scientists successfully developed 1-inch-sized carbon nano-transistors and for the first time surpassed the performance of silicon transistors and Gallium arsenide transistor.
As its name implies, carbon nanotubes are made of carbon nanotubes as a channel conductive material made of transistors, the wall is only one atom thick, this material not only good conductivity, and the volume can be done than the current silicon transistor 100 times . In addition, the tiny space of a carbon nanotube enables it to rapidly change the direction of the current flowing through it, resulting in up to five times the speed or energy consumption of a silicon transistor of 1/5 of a silicon transistor.
However, because of the bottleneck of technology, for a long time, researchers have not been able to develop carbon nanocrystal transistors that outperform silicon and gallium arsenide transistors, let alone their applications in various types of electronic devices.
It is understood that, according to the traditional practice, carbon nanotubes are usually mixed with some metal nanotubes, but these metal nanotubes can cause electronic devices short circuit, thus undermining the conductivity of carbon nanotubes. This time, researchers at the University of Wisconsin-Madison opened a new trail by using polymer to replace almost all metal nanotubes and reducing metal nanotubes to less than 0.01%, which greatly enhanced their conductivity.
In addition to this, the research team has also made improvements in the process, and the dissolution method developed by them successfully removes the residue generated during the manufacturing of carbon nanotubes.
Mike Arnold, a professor of materials engineering at the University of Wisconsin-Madison, said: "Our research also overcomes the multiple barriers that carbon nanotubes face and ultimately results in a 1-inch carbon nanotube with the first ultra-performance silicon transistor. Still to be realized, but we finally managed to catch up in 20 years. "
So the question is, who will become the next generation of graphene and carbon nanotubes?
Will air-conditioned rooms dry in summer? What about air-conditioned rooms
It will dry a little. During the refrigeration process, the air conditioner can remove some moisture from the air. Because the temperature of indoor air drops sharply after entering the air conditioner evaporator, its relative humidity will enter a supersaturated state. At this time, a large amount of dew will condense on the evaporator fins, which is "condensation" in refrigeration terminology. Therefore, the refrigeration process is accompanied by dehumidification. Because of the dehumidification function of the air conditioner, The indoor air humidity is much lower than the normal value, and the room becomes dry.
If the air in the room is too dry due to opening the air conditioner, this problem can be alleviated by increasing the air humidity. The humidifier is recommended as the first choice for room humidification. The humidifier can not only change the liquid water into atomization state and make the water vapor evenly distributed in the room, but also purify the air and reduce the risk of human disease. If you think the humidifier is troublesome, putting a basin of water in the room also has a certain role in alleviating dryness.
The doctor suggested that an Aroma Diffuser should be placed indoors, which can effectively and immediately solve the problem of indoor air drying, humidify the air and solve the problem of air drying. For the ultrasonic aroma diffuser, the fog is sprayed out through vibration. You can contact us to learn more about aroma diffuser
Drink more water. If you have dry mouth and dry tongue after staying in the air-conditioned room for a long time, it is first recommended to drink more water, which is the most direct and rapid way to alleviate the discomfort of dry mouth. Instead of waiting until you are thirsty, you should replenish water at any time, because the air-conditioned room is easy to take away the water from the human body. In addition to the performance of dry mouth and dry tongue, there may also be discomfort such as dry skin, dry lips and eyes, molting, etc, Therefore, replenishing water at any time is a very important measure
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