777soft.net Computer Science and Technology in 777soft

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Posted under Science , Science, Technology, Technology, Documentary, History, Chemistry, Geophysics, Documentary |

Oxide semiconductor nanowires
TRANSPARENT: SYNTHESIS AND OPTICAL PROPERTIES
BIANCHI MENDEZ
DEPARTMENT OF PHYSICS OF MATERIALS
Universidad Complutense de Madrid
MONDAY, APRIL 19, 2010 at 9:30 am in the mornings
For more information contact:
PROF. Jose Ygnacio Pastor, ORGANIZING AND SCIENTIFIC COORDINATOR
Department of Materials Science. Universidad Politécnica de Madrid
ETSI Caminos, Canales y Puertos, Floor -1. C / Professor Aranguren, sn E-28 040-Madrid
T. 913 366 684. F. 913 366 680. jypastor@mater.upm.es ,

The seminar will present results of recent work on nanostructures of gallium oxide and germanium oxide made in the research group "Micro-electronic materials and nanocharacterization" of the. These oxides belong to the family of functional materials with semiconducting properties and simultaneously transparent in the visible: Transparent Conductive Oxide (TCO). Moreover, the electrical and optical properties of TCO can be adjusted by controlled incorporation of impurities or changes in the concentration of oxygen vacancies, which favors its versatility. Results will be presented oxide nanowires of gallium and germanium, both undoped and doped with optically active impurities. It will demonstrate its efficiency as light emitting and light guides behavior as in the visible range.
Video Produced by the Office of Tele-Education of the Polytechnic University of Madrid.

http://www.mater.upm.es/Seminarios.asp

Posted under Science , Science, Physics, Spain, Technology, Technology, Nanotechnology, Engineering, UPM |

The Professor Edward Witten (Institute for Advanced Studies, Princeton, USA) has won the edition of 2010 of the Isaac Newton Medal awarded by the Institute of Phycis (IOP), UK. Receiving the award has given a talk, available on video in two parts ( Part I and Part II ). I recommend you watch the video, especially the second, where just asking Witten young converts to their cause, the future of string theory. There is a desperate call but it is interesting to note how times have changed. It was obvious 10 years ago that all young people aspiring to theoretical physicists wanted to work in string theory. Today we no longer feel the same. Young people know that their future lies with his feet on the ground. Struggling to understand the results of the CERN LHC and other experiments in progress. The glory of string theory might end up as the utopia of the evo.

Witten is not a great exponent of the number of contributions but by the quality of them. I recommend your articles informative, and Reflections on the Fate of Spacetime , Duality, Spacetime and Quantum Mechanics , Magic, Mystery, and Matrix , The Holes are Defined by the String , The Mass Question , Hunting the Higgs , Universe on a String , Black Holes and Quark Confinement , When Symmetry Breaks Down and Unravelling String Theory .

Luboš Motl, " Newton Medal talk by Witten , "The Reference Frame, July 28, 2010. Lubos feel the great crusader for SUSY (supersymmetry) and tells us in " Suzy at last? "TRF, July 30, 2010 (" the Well-Known only website in this Solar System That defends supersymmetry as the Most Likely next experimental discovery in high-energy physics), who takes title and comments to the entry of Philip Gibbs, " Suzy at Last? "viXra log, July 30, 2010. Do you observe supersymmetry at the LHC at CERN? The signature of SUSY at the LHC is the production of many jets of particles (associated with very massive particles) with much loss of energy (associated with particles that interact little like neutrinos). At present theoretical and computational analysis of such collisions is not easy but they are making great progress. If any reader interested in these issues I recommend the talk by Matthew Schwartz (Harvard University), " Jet Precision Physics at the LHC , "Particle Theory Seminar, Rutgers University, May 4 2010 [ video rm ].

www.imprescindiblesdelaciencia.es

Posted under Science , Science, Physics, Mathematics, Cosmology, University, CERN, LHC, Fermilab Tevatron |

The LHC particle accelerator in Geneva has found clear evidence of the most massive known elementary particle in the universe, the top quark, in a demonstration that science facility is operating at full capacity. The first results of the LHC, presented yesterday at the International Conference on High Energy Physics held in Paris, come to dispel the doubts about the operation of the accelerator. The potential of the LHC had been questioned after a truncated fault his first attempt at entry into service in September 2008. Now, four months after launching it again, "we have increased the rate of collisions by a factor of over a thousand, it's better than we expected (...) and better than had been achieved in other accelerators," said yesterday in conference call Rolf Heuer, general director of the European Laboratory for Particle Physics (CERN), which has built the LHC. The detection of the top quark, the more massive particle known so far, detected only in the U.S. accelerator but never before in Europe, is proof that the LHC is ready to explore energy levels that have never been investigated. "We are about to start seeing new physics," Heuer said. ...

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Posted under Science , Science, Physics, Astrophysics, Mathematics, International, Technology, Technology, Cosmology, Engineering, CERN, LHC, Math, LEP, Fermilab Tevatron |

This Post Was Written by portalhispano on July 29, 2010

Scientists plan to relocate a major experiment on the origin of the universe to two kilometers below the ground in Canada

Deep in the Soudan mine, an old iron farm located in Minnesota (USA), scientists look for signs of dark matter, the mysterious substance that keeps "sticking" to the universe and that if the theory is not wrong way 20% of the total mass of the Cosmos. In this eerie place, a detector, called CDMS (Cryogenic Dark Matter Search) , is on the hunt for a particle that, finally, we confirm their existence. But with the exception of some suspicions to be confirmed, the experiment has not worked and we still see with our own eyes how this strange universal force. In the absence of 'Eureka', the scientists suggest that perhaps the place where you are looking for one of the greatest mysteries of the world of physics may not meet the sufficient conditions for a happy ending. In this sense, the experiment proposed underground facility is transferred to an even deeper, two kilometers underground in Ontario, Canada, to cosmic rays hitting the Earth can not distort the research.

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Posted under Science , Science, Physics, Astrophysics, Cosmology, CERN, LHC, LEP |

This Post Was Written by portalhispano on July 28, 2010

Much has been published already on the CERN and the LHC, however on this visit BBC have published interviews and we found it interesting, especially to new readers.

For many scientists, the European Council for Nuclear Research (CERN), where the Large Hadron Collider, is a kind of wonderland, where the passion for science is the white rabbit, if followed, will lead to discoveries.

It was at this European laboratory, considered the best venue for particle physics in the world where Internet was born. In the World Wide Web in addition important findings, such as the discovery of fundamental particles, which have succeeded in pioneering science since 1954.

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Posted under Science , Science, Physics, Astrophysics, Mathematics, International, Europe, Technology, Technology, Cosmology, Internet, History, University, Engineering, CERN, LHC, Math, LEP |

This Post Was Written by portalhispano on July 23, 2010

The Institute of Microelectronics of Madrid has installed a new team of ion beam lithography that will make nanoscale structures more safely and efficiently, which will meet the demands of both the business world as the scientist.

As he explained the Cientñificas Research Council (CSIC), the unit allows manufacturing with sizes of 10 nanometers on surfaces up to 100 square centimeters off the current thousandths of an inch square.

Jose Anguita, CSIC researcher responsible for the machine, explained that "this is the only device capable of making some sort of nanotech devices in Spain by ion beam techniques."

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Posted under Science , Science, Physics, Spain, Technology, Technology, Nanotechnology, University, Engineering, UPM |