Comprehensive coverage

Even atoms, and not only electrons, are able to pass through a barrier

The Technion researchers published in an article in the journal Nature that they added a layer to the Josephson effect from 1962

Researchers from the Faculty of Physics and the Russell Berry Institute for Nanotechnology at the Technion were able to prove that atoms, and not just electrons, are also able to pass through a barrier. In doing so, they added an important layer to the Josephson effect from 1962. Professor Brian Josephson received a Nobel Prize for his discovery. This is what the prestigious scientific journal "Nature" reveals in its latest issue.
The direct current phenomenon of the Josephson effect combines two phenomena - tunneling and superfluid. In the tunneling phenomenon, Josephson found that the electrons are able to pass through a barrier (they suddenly appear on the other side). Technion researchers have now found that even atoms do not sense the barrier, and pass easily and freely through it.
Dr. Jeff Steinhauer from the Physics Faculty at the Technion explains: "We applied a constant force on the cold atoms, but they responded by moving back and forth. They moved in the direction we pushed them, and then in the opposite direction. On average the atoms did not move at all, despite the pushing force. However, when we added some hot atoms to the cold atoms, they did move forward, in response to the pushing force."
The alternating current of the Josephson effect is not only strange, but also important. For example, he defines the volt. Moreover, the Technion researchers showed that whole atoms can exhibit the amazing tunneling phenomena, which are usually associated with tiny electrons rather than atoms.
The Technion researchers put a laser beam as a barrier in their laboratory and saw that the atoms pass through it as a group, without even feeling that there was a DC barrier. (The Josephson effect did see that the atoms move back and forth, which is the AC Josephson phenomenon. So they added hot atoms, and saw that all the atoms pass the barrier and appear Suddenly on the other side.
Following the discovery by the Technion researchers, it will be possible to measure rotation speed, which may significantly improve the gyroscope device that exists today for navigation purposes, or improve the measurement of slight changes in the Earth's rotation.

5 תגובות

  1. Apparently the Technion's public relations department is working overtime.

    Kudos to the Weizmann Institute, they perform successful experiments - that is, those that their physics knew, the result is known and there is no surprise in the result.

    What we will call: a laboratory course for advanced students.

    -

    A true physicist is a person driven by a tremendous drive to innovate in science. The one who goes to such experiments ceases to be a physicist and becomes a craftsman who earns his salary like a human being.

  2. Listen Mr. Bacher, we are not treated as mere science enthusiasts, but as those who are at a level, who are easily able to pass all kinds of barriers, we just need a little energy (darkness?) and heating.
    Apart from that I wanted to understand what is nim dropping?
    So let's have a nice tunnel
    Sabdarmish Yehuda

  3. A classic nim-dropping article. I find her very evil. The article is about throwing in terms like tunnel, barrier, hot atoms, cold atoms, alternating current... There couldn't be a more fitting ending than the last sentence that also throws in rotation speed and gyroscope and navigation.

Leave a Reply

Email will not be published. Required fields are marked *

This site uses Akismat to prevent spam messages. Click here to learn how your response data is processed.