The array can be "written" in such a way

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BUDAPEST Braden Smith Jersey , Oct. 17 (Xinhua) -- Bernd Storck, the coach of the Hungarian national football team terminated his contract by mutual agreement, Hungarian Football Federation (MLSZ) announced here Tuesday.

"The meeting of the presidency of MLSZ approved the resolution to mutually terminate the agreement with Bernd Storck Darius Leonard Jersey , who is leaving his post as coach and sports director of the Hungarian national football team," MLSZ announced on its official website.

The federation requested its President Sandor Csanyi, to start talks with new candidates to replaces Storck. The next two friendly matches of the Hungarian team in November Quenton Nelson Jersey , against Luxemburg and Costa Rica, might be played under the supervision of a temporary coach, according to the federation's President Sandor Csanyi.

"Hope Indianapolis Colts Jersey , which is a condition of successes, has been lost, and without it there is no point in continuing Houston Texans Jersey ," Csanyi told on the official website.

"In order to achieve lasting results, we must build our development on the performance of the football clubs, on the training of the children and the young JK Scott Jersey , and on the international competitiveness of the teams," Csanyi underlined.

Storck was appointed as sports director in March 2015, then in July as coach of the national team. His record is 8 victories Josh Jackson Jersey , 10 defeats and 7 draws.

The Hungarians managed to finish in the eighth finals in the European Championships last year, but after a series of defeats in the qualifiers, failed to secure their participation in the World Cup.

"I am proud that I could have worked for the football of a country having such great traditions Jaire Alexander Jersey , proud of our results in last year's European Championships," Storck said, quoted by MLSZ's official website. "We gave people joy that they have been longing for over many decades Aaron Rodgers Jersey ," he added.

SAN FRANCISCO， Feb. 24 (Xinhua) -- A researcher at the University of California， Berkeley， is working on a new type of lens that may do away with the classic convex piece of glass or plastic in cell phones with cameras.

Jie Yao， an assistant professor with UC Berkeley's Department of Materials Science and Engineering， is fabricating nano-thin sheets of phase change material that are glass-like at room temperature but becomes metallic when heated slightly.

The work is about "metamaterials，" made of millions of nano-scale particles， each about the size of a virus， and made into arrays of nano-structures. They are so named because they perform unlike any other natural substances. Although the particles themselves are made of atoms， their novel effects on material's performance have earned them the name "artificial atoms."

With support from the Bakar Fellows Program， which fosters faculty entrepreneurship at UC Berkeley， Yao is trying to transform a natural phase change material in a way that seems like alchemy， turning some sections of the material into metal but leaving others unchanged.

The metallic portions can interact with light as if they were nanoscale antennas， and Yao has shown that in certain conformations， the combined effect of tens of thousands of these antennas can focus light like a lens.

"The metallic phase change material is the working part of the material， while the insulating part provides the matrix to hold the 'artificial atoms' in place，" Yao was quoted as saying in a news release from UC Berkeley. With a local heat source， he is able to convert part of the thin sheets into the metal antennas while letting other parts remain transparent.

"Using a local heat source， we can 'write' new structures into the material. Then， by lowering the temperature， we can erase and re-write them. We can change the material's structure， and performance at will. No complicated nano-fabrication process is needed，" he said.

By using this etch-a-sketch local heating strategy， his team can change the material's configuration in real time， potentially in less than a second. "In this we may be able to create a dynamic optical device， for example， a single lens whose focus can be changed whenever necessary."

The interactions of the nano-antennas with light are so effective that films hundreds of times thinner than a conventional lens could tightly control the path of light that passes through the film， Yao said.

"When a broad beam of light hits the array， it can be considered as composed of many finer beams. Each new beam passes by an antenna， which is able to change its unique path."

The array can be "written" in such a way that each antenna will guide light to the same focal point to form a lens. The next moment， the array can be erased and a new array may be written， and the focal point changed to another location， which could be used to improve the performance of photography and other imaging processes.

He intends to refine his technology's novel ability to tweak the metallic components' 3-D shape， and hopes to open up a range of applications to control visible light as well as infrared and microwave wavelengths.

"The material is a platform that allows us to draw any photonic structure， so we really can achieve a range of applications and transform them from static devices to dynamic ones，" he said.

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