Dear Reader ,
Here is your customized Phys.org Newsletter for week 22:
First-ever high-resolution images of a molecule as it breaks and reforms chemical bonds
When Felix Fischer of the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) set out to develop nanostructures made of graphene using a new, controlled approach to chemical reactions, the first result was a surprise: spectacular images of individual carbon atoms and the bonds between them.
Russian scientists make rare find of 'blood' in mammoth
Russian scientists claimed Wednesday they have discovered blood in the carcass of a woolly mammoth, adding that the rare find could boost their chances of cloning the prehistoric animal.
Scientists develop CO2 sequestration technique that produces 'supergreen' hydrogen fuel
(Phys.org) �Lawrence Livermore scientists have discovered and demonstrated a new technique to remove and store atmospheric carbon dioxide while generating carbon-negative hydrogen and producing alkalinity, which can be used to offset ocean acidification.
Global warming caused by chlorofluorocarbons, not carbon dioxide, new study says
Chlorofluorocarbons (CFCs) are to blame for global warming since the 1970s and not carbon dioxide, according to new research from the University of Waterloo published in the International Journal of Modern Physics B this week.
Researchers turn cement into metal
(Phys.org) �In a move that would make the Alchemists of King Arthur's time green with envy, scientists have unraveled the formula for turning liquid cement into liquid metal. This makes cement a semi-conductor and opens up its use in the profitable consumer electronics marketplace for thin films, protective coatings, and computer chips.
New mathematical model links space-time theories
Researchers at the University of Southampton have taken a significant step in a project to unravel the secrets of the structure of our Universe.
Physics team entangles photons that never coexisted in time
(Phys.org) �Researchers at the Hebrew University of Jerusalem have succeeded in causing entanglement swapping between photons that never coexisted in time. In their paper published in the journal Physical Review Letters, the team explains how their experiment proves true an entanglement phenomenon first described by researchers last year at the University of Erlangen-Nuremberg.
Artificial magnetic monopoles discovered
A team of researchers from Cologne, Munich and Dresden have managed to create artificial magnetic monopoles. To do this, the scientists merged tiny magnetic whirls, so-called skyrmions. At the point of merging, the physicists were able to create a monopole, which has similar characteristics to a fundamental particle postulated by Paul Dirac in 1931. In addition to fundamental research, the monopoles may also have application potential. The question of whether magnetic whirls can be used in the production of computer components one day is currently being researched by a number of groups worldwide.
Scientists narrow global warming range
(Phys.org) �Australian scientists have narrowed the predicted range of global warming through groundbreaking new research.
Theorists apply loop quantum gravity theory to black hole
(Phys.org) �Physicists Rodolfo Gambini and Jorge Pullin of University of the Republic in Montevideo, Uruguay, and Louisiana State University respectively, have applied the theory of Loop Quantum Gravity (LQG) to a simplified black hole. In so doing, as they describe in their paper published in the journal Physical Review Letters, they suggest that instead of a singularity existing at its center, there is a portal to another universe.
Lee Smolin describes a new model of the universe (w/ Video)
Time is real, the laws of physics can change and our universe could be involved in a cosmic natural selection process in which new universes are born from black holes, renowned physicist and author Lee Smolin said in a talk at the Institute of Physics on 22 May.
New report indicates private industry interested in building moon base
(Phys.org) �Two months ago NASA commissioned Bigelow Aerospace to conduct a survey of the corporate sector to learn about private enterprise plans for space exploration. While the report has not yet been completed, Bigelow president Robert Bigelow and NASA's head of space operations William Gerstenmaier held a teleconference with reporter's to discuss findings thus far.
Cosmic glitch: Super-dense star is first ever found suddenly slowing its spin
One of the densest objects in the universe, a neutron star about 10,000 light years from Earth, has been discovered suddenly putting the brakes on its spinning speed. The event is a mystery that holds important clues for understanding how matter reacts when it is squeezed more tightly than the density of an atomic nucleus�a state that no laboratory on Earth has achieved. The discovery by an international team of scientists will be published in the journal Nature on May 30, 2013.
High-efficiency zinc-air battery developed
Stanford University scientists have developed an advanced zinc-air battery with higher catalytic activity and durability than similar batteries made with costly platinum and iridium catalysts. The results, published in the May 7 online edition of the journal Nature Communications, could lead to the development of a low-cost alternative to conventional lithium-ion batteries widely used today.
Helicopter-light-beams: A new tool for quantum optics
A light wave oscillates perpendicular to its propagation direction � that is what students learn in school. However, scientists of the Vienna University of Technology (TU Vienna) now perform atom-physics experiments with light oscillating in the longitudinal direction.
Even with defects, graphene is strongest material in the world
In a new study, published in Science May 31, 2013, Columbia Engineering researchers demonstrate that graphene, even if stitched together from many small crystalline grains, is almost as strong as graphene in its perfect crystalline form. This work resolves a contradiction between theoretical simulations, which predicted that grain boundaries can be strong, and earlier experiments, which indicated that they were much weaker than the perfect lattice.
Researchers discover a way to dramatically reduce distortion in long distance fiber cable
(Phys.org) �A team of researchers working at Bell Labs in New Jersey has found a way to dramatically reduce the amount of distortion in long distance fiber cables. Their method results, the team reports in their paper published in the journal Nature Photonics, in an ability to transmit more data over very long fiber cable lines.
Uncertainty revisited: Novel tradeoffs in quantum measurement
(Phys.org) �There is, so to speak, uncertainty about uncertainty � that is, over the interpretation of how Heisenberg's uncertainty principle describes the extent of disturbance to one observable when measuring another. More specifically, the confusion is between the fact that, as Heisenberg first intuited, the measurement of one observable on a quantum state necessarily disturbs another incompatible observable, and the fact that on the other hand the indeterminacy of the outcomes when either one or the other observable is measured is bounded. Recently, Dr. Cyril Branciard at The University of Queensland precisely quantified the former by showing how it is possible to approximate the joint measurement of two observables, albeit with the introduction of errors with respect to the ideal measurement of each. Moreover, the scientist characterized the disturbance of an observable induced by the approximate measurement of another one, and derived a stronger error-disturbance rel! ation for this scenario.
Meta-transmitarray offers unprecedented control of light on subwavelength scales
(Phys.org) �The ability to guide, bend and focus light at the nanoscale is a highly sought-after goal in the field of nano-optics. Precise and efficient light control has direct applications in solar cells, holography, nanoscale signal processing, CMOS cameras, and many other areas. In a recent study, a team of engineers has proposed a new technique for controlling light at deeply subwavelength scales using a thin stack of patterned surfaces that the engineers call a "meta-transmitarray." The underlying physics of the new concept is very different from any conventional lens and offers greatly improved efficiency and flexibility for manipulating light transmission at the nanoscale.
Researchers find 400 year old Ice Age plants in Arctic able to grow anew as glaciers retreat
(Phys.org) �A team of researchers from the University of Alberta led by, Catherine La Farge, has found that mosses and liverworts covered by ice over 400 years ago and now exposed due to glacial melting, are able to start growing again. In their paper published in the journal Proceedings of the National Academy of Sciences, the team describes how carbon dating showed the plants to be from a time just prior to the Little Ice Age.
This email is a free service of Phys.org
You received this email because you subscribed to our list.
If you no longer want to receive this email use the link below to unsubscribe.
http://phys.org/profile/nwletter/
You are subscribed as jmabs1@gmail.com
No comments:
Post a Comment