Frozen light. Free Technical Library News

NEWS OF SCIENCE AND TECHNOLOGY, NOVELTY IN ELECTRONICS
Free technical library / timeline

frozen light

08.03.2004

In 2001, two groups of scientists reported that they had succeeded in stopping the light. One under the direction of Mikhail Lukin, and the other - under the direction of Lene Howe.

Both groups slowed down the speed of light by passing it through gas atoms. Lukin used hot atoms of rubidium, Howe used supercooled sodium. Both groups reduced the speed of light to zero, but in doing so, all the photons were absorbed. The momentum could be regenerated because the energy of the photons was stored in the atoms. But when the pulse stopped, technically it contained no light at all.

Lukin and his colleagues Mikhail Baisky and Alexander Zibrov have now managed to stop light for a fraction of a millisecond with all their photons using a new method. But they believe that the light can be stopped for a longer time. This could be useful for use in telecommunications systems that send optical signals, or, even more fantastically, in quantum computers.

<< Back: New acoustics from DENON 09.03.2004

>> Forward: Infineon launches 512Mb NAND storage 08.03.2004

Latest news of science and technology, new electronics:

The existence of an entropy rule for quantum entanglement has been proven 09.05.2024

Quantum mechanics continues to amaze us with its mysterious phenomena and unexpected discoveries. Recently, Bartosz Regula from the RIKEN Center for Quantum Computing and Ludovico Lamy from the University of Amsterdam presented a new discovery that concerns quantum entanglement and its relation to entropy. Quantum entanglement plays an important role in modern quantum information science and technology. However, the complexity of its structure makes understanding and managing it challenging. Regulus and Lamy's discovery shows that quantum entanglement follows an entropy rule similar to that for classical systems. This discovery opens new perspectives in the field of quantum information science and technology, deepening our understanding of quantum entanglement and its connection to thermodynamics. The results of the study indicate the possibility of reversibility of entanglement transformations, which could greatly simplify their use in various quantum technologies. Opening a new rule ... >>

Mini air conditioner Sony Reon Pocket 5 09.05.2024

Summer is a time for relaxation and travel, but often the heat can turn this time into an unbearable torment. Meet a new product from Sony - the Reon Pocket 5 mini-air conditioner, which promises to make summer more comfortable for its users. Sony has introduced a unique device - the Reon Pocket 5 mini-conditioner, which provides body cooling on hot days. With it, users can enjoy coolness anytime, anywhere by simply wearing it around their neck. This mini air conditioner is equipped with automatic adjustment of operating modes, as well as temperature and humidity sensors. Thanks to innovative technologies, Reon Pocket 5 adjusts its operation depending on the user's activity and environmental conditions. Users can easily adjust the temperature using a dedicated mobile app connected via Bluetooth. Additionally, specially designed T-shirts and shorts are available for convenience, to which a mini air conditioner can be attached. The device can oh ... >>

Energy from space for Starship 08.05.2024

Producing solar energy in space is becoming more feasible with the advent of new technologies and the development of space programs. The head of the startup Virtus Solis shared his vision of using SpaceX's Starship to create orbital power plants capable of powering the Earth. Startup Virtus Solis has unveiled an ambitious project to create orbital power plants using SpaceX's Starship. This idea could significantly change the field of solar energy production, making it more accessible and cheaper. The core of the startup's plan is to reduce the cost of launching satellites into space using Starship. This technological breakthrough is expected to make solar energy production in space more competitive with traditional energy sources. Virtual Solis plans to build large photovoltaic panels in orbit, using Starship to deliver the necessary equipment. However, one of the key challenges ... >>

New method for creating powerful batteries 08.05.2024

With the development of technology and the expanding use of electronics, the issue of creating efficient and safe energy sources is becoming increasingly urgent. Researchers at the University of Queensland have unveiled a new approach to creating high-power zinc-based batteries that could change the landscape of the energy industry. One of the main problems with traditional water-based rechargeable batteries was their low voltage, which limited their use in modern devices. But thanks to a new method developed by scientists, this drawback has been successfully overcome. As part of their research, scientists turned to a special organic compound - catechol. It turned out to be an important component that can improve battery stability and increase its efficiency. This approach has led to a significant increase in the voltage of zinc-ion batteries, making them more competitive. According to scientists, such batteries have several advantages. They have b ... >>

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Random news from the Archive

Disposable endoscope 30.04.2011

A micro-camera the size of a grain of salt could revolutionize medical technology. Many people know how unpleasant it is to swallow the colon of an endoscope for gastric research. On the other hand, after each examination, it must be decontaminated, which takes time.

The technology invented by scientists from the Fraunhofer Institute for Reliability and Microintegration in Berlin allows us to solve two problems at once. With its help, the camera can be made miniature and so cheap that the endoscope becomes disposable.

The essence of technology is this. The microcamera consists of a lens, an array of optical sensors and an analyzer. Now the latter is connected to the sensor elements with optical fibers, which is why the endoscope turns out to be so thick. And they grow both the sensor, and the analyzer, and the lens by similar microelectronics methods, which make it possible to obtain many cheap microcircuits at a time. However, until recently, all three parts were made separately and then assembled.

German scientists managed to grow a lens, sensors and an analyzer in a single process. After that, it remains only to cut the substrate (and 28 thousand devices fit on it) into pieces and connect a thin electrical wire to the analyzer output. The endoscope is ready. At the same time, it gives a very clear image - a resolution of 62,5 kilopixels.

See full Archive of science and technology news, new electronics

All languages of this page

Home page | Library | Articles | Website map | Site Reviews