Physics posts
- May 21, 2013
- 02:23 PM
- 24 views
Berkeley Lab Builds ‘Artificial Forest’ to Harvest Solar Energy
by dailyfusion in The Daily Fusion
Devices for artificial photosynthesis are often called “artificial leaves”. This leaves, however, are of no use unless you can create an “artificial forest” from them. Now, scientists with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory have reported the first fully integrated nanosystem for artificial photosynthesis.... Read more »
Liu, C., Tang, J., Chen, H., Liu, B., & Yang, P. (2013) A Fully Integrated Nanosystem of Semiconductor Nanowires for Direct Solar Water Splitting. Nano Letters, 2147483647. DOI: 10.1021/nl401615t
- May 18, 2013
- 07:06 AM
- 32 views
Ground-breaking science and spectacular cosmic images from the PAPER instrument in the Karoo
by Perikis Livas in Tracing Knowledge
-Scientific studies done with the “PAPER” array, one of the world-class scientific instruments in South Africa’s Karoo Radio Astronomy Reserve, is producing ground-breaking science and spectacular cosmic images, resulting in several important articles in top astronomy journals.
-The first scientific paper based on observations performed with South Africa’s new KAT-7 radio telescope, has been accepted for publication by the prestigious journal Monthly Notices of the Roy........ Read more »
SKA SA Project Office. (2013) Ground-breaking science and spectacular cosmic images from the PAPER instrument in the Karoo. SKA Africa . info:/
- May 17, 2013
- 04:55 PM
- 34 views
Strategies for Breaking Even on Home Energy Consumption Suggested
by dailyfusion in The Daily Fusion
When you are buying a car you always look at official miles per gallon figures to find out how much fuel it will use. At the same time, most people have only a vague idea about how much energy their houses consume, even though home energy expenditures often account for a larger share of the household budget.... Read more »
N.A. McNabb. (2013) Strategies to Achieve Net-Zero Energy Homes: A Framework for Future Guidelines Workshop Summary Report. NIST Special Publication. DOI: 10.6028/NIST.SP.1140
- May 17, 2013
- 06:48 AM
- 75 views
CMS harbors new physics beyond the Standard Model
by Marco Frasca in The Gauge Connection
In these days is ongoing LHCP 2013 (First Large Hadron Collider Physics Conference) and CMS data seem to point significantly toward new physics. Their measurements on the production modes for WW and ZZ are agreeing with my recent computations (see here) and overall are deviating slightly from Standard Model expectations giving Note that Standard Model is alive and […]... Read more »
Marco Frasca. (2013) Revisiting the Higgs sector of the Standard Model. arXiv. arXiv: 1303.3158v1
Marco Frasca. (2010) Mass generation and supersymmetry. arXiv. arXiv: 1007.5275v2
T. G. Steele, & Zhi-Wei Wang. (2013) Is Radiative Electroweak Symmetry Breaking Consistent with a 125 GeV Higgs Mass?. Physical Review Letters, 151601. arXiv: 1209.5416v3
Krzysztof A. Meissner, & Hermann Nicolai. (2006) Conformal Symmetry and the Standard Model. Phys.Lett.B648:312-317,2007. arXiv: hep-th/0612165v4
- May 16, 2013
- 02:27 PM
- 32 views
Researchers Develop New Way to Produce Hydrogen From Water and Sunlight
by dailyfusion in The Daily Fusion
Using a combination of microanalytic techniques that at the same time image photoelectric current and chemical reaction rates across a surface on a micrometer scale, researchers at the National Institute of Standards and Technology (NIST) have shed new light on what may become a cost-effective way to generate hydrogen gas directly from water and sunlight.... Read more »
Esposito, D., Levin, I., Moffat, T., & Talin, A. (2013) H2 evolution at Si-based metal–insulator–semiconductor photoelectrodes enhanced by inversion channel charge collection and H spillover. Nature Materials. DOI: 10.1038/nmat3626
- May 15, 2013
- 11:31 PM
- 40 views
Evolution explains the fundamental constants of physics
by Artem Kaznatcheev in Evolutionary Games Group
While speaking at TEDxMcGill 2009, Jan Florjanczyk — friend, quantum information researcher, and former schoolmate of mine — provided one of the clearest characterization of theoretical physics that I’ve had the please of hearing: Theoretical physics is about tweaking the knobs and dials and assumptions of the laws that govern the universe and then interpolating […]... Read more »
Gardner, A., & Conlon, J. (2013) Cosmological natural selection and the purpose of the universe. Complexity. DOI: 10.1002/cplx.21446
- May 15, 2013
- 04:07 PM
- 39 views
Discovering a new planet (TAU-CfA articles)
by Perikis Livas in Tracing Knowledge
1.TAU team takes part in discovering new planet
A team of astronomers at TAU and the Harvard-Smithsonian Center for Astrophysics have announced the first-ever discovery of an extrasolar planet via induced relativistic beaming of light from the host star.
2.New Method of Finding Planets Scores its First Discovery
- CfA... Read more »
TAU News office. (2013) TAU team takes part in discovering new planet. Tel Aviv University. info:/
- May 15, 2013
- 12:45 PM
- 37 views
The Modern Prometheus: Scientists Uncover the Secret of ‘Magnetic Fire’
by dailyfusion in The Daily Fusion
A group of physicists from the New York University have uncovered how energy is released and dispersed in magnetic materials in a process similar to the spread of forest fires. This finding not only has the potential to deepen our understanding of self-sustained chemical reactions, but also could open new exciting possibilities for energy storage.... Read more »
Subedi, P., Vélez, S., Macià, F., Li, S., Sarachik, M., Tejada, J., Mukherjee, S., Christou, G., & Kent, A. (2013) Onset of a Propagating Self-Sustained Spin Reversal Front in a Magnetic System. Physical Review Letters, 110(20). DOI: 10.1103/PhysRevLett.110.207203
- May 14, 2013
- 03:16 PM
- 34 views
Graphene Redefines Electric Current, Literally
by dailyfusion in The Daily Fusion
A new joint innovation by the National Physical Laboratory (NPL) and the University of Cambridge could pave the way for redefining the ampere in terms of fundamental constants of physics. The world’s first graphene single-electron pump (SEP) provides the speed of electron flow needed to create a new standard for electrical current based on electron charge.... Read more »
Connolly, M., Chiu, K., Giblin, S., Kataoka, M., Fletcher, J., Chua, C., Griffiths, J., Jones, G., Fal'ko, V., Smith, C.... (2013) Gigahertz quantized charge pumping in graphene quantum dots. Nature Nanotechnology. DOI: 10.1038/nnano.2013.73
- May 14, 2013
- 10:06 AM
- 37 views
First ever discovery of an alien planet with the help of Einstein's Theory of Relativity
by Usman Paracha in SayPeople
Main Point:
Scientists have found, for the first time, an alien planet, dubbed as "Einstein's planet", with the help of the Einstein's Theory of Relativity.
Published in:
The Astrophysical Journal
Study Further:
"Einstein's planet" is officially called as Kepler-76b and is the first planet found by this method. It is the latest of the 800 planets located beyond our Solar System.
This planet is 25% larger than Jupiter and is two times of its we........ Read more »
Simchon Faigler, Lev Tal-Or, Tsevi Mazeh, Dave W. Latham, & Lars A. Buchhave. (2013) BEER analysis of Kepler and CoRoT light curves: I. Discovery of Kepler-76b: A hot Jupiter with evidence for superrotation. The Astrophysical Journal. arXiv: 1304.6841v3
- May 13, 2013
- 02:06 PM
- 43 views
Earth's central part is rotating differently than the rest of the planet
by Usman Paracha in SayPeople
Main Point:
Scientists have found that the inner-core of the Earth rotates at a different and variable rate than the mantle - the central part of the Earth or another planet that is present between the core and the crust.
Published in:
Nature Geoscience
Study Further:
Scientists observed earthquake doublets - pairs of nearly identical earthquakes that can occur a couple of weeks to 30 or 40 years apart - over the last 5 decades to find the speed of the inner-core of the Earth.
........ Read more »
Tkalčić, H., Young, M., Bodin, T., Ngo, S., & Sambridge, M. (2013) The shuffling rotation of the Earth’s inner core revealed by earthquake doublets. Nature Geoscience. DOI: 10.1038/ngeo1813
- May 13, 2013
- 11:11 AM
- 63 views
How to Convince People WiFi Is Making Them Sick
by Elizabeth Preston in Inkfish
All it takes is an antenna on a headband. If you've got a breathless video report on the dangers of wireless internet connections, that will help your case. It doesn't take much, though, to turn an ominous hint into a real headache.
Some people consider themselves sensitive to electromagnetic fields. They report symptoms such as burning skin, tingling, nausea, dizziness, or chest pain, and they blame their malaise on nearby power lines, cell phones, or WiFi networks. A recent Slate arti........ Read more »
Witthöft, M., & Rubin, G. (2013) Are media warnings about the adverse health effects of modern life self-fulfilling? An experimental study on idiopathic environmental intolerance attributed to electromagnetic fields (IEI-EMF). Journal of Psychosomatic Research, 74(3), 206-212. DOI: 10.1016/j.jpsychores.2012.12.002
- May 13, 2013
- 09:45 AM
- 33 views
A Quantum Version of Google
by Carian Thus in United Academics
A team of computer scientists in Spain applied a quantum PageRank algorithm to a network with 7 webpages. They found that the quantum PageRank sometimes ordered the webpages differently in terms of importance, but averaging the quantum PageRank score over time recovered the classical ordering.... Read more »
Paparo, G., & Martin-Delgado, M. (2012) Google in a Quantum Network. Scientific Reports. DOI: 10.1038/srep00444
- May 12, 2013
- 08:35 AM
- 40 views
Electromicrobiology - One of the rapidly rising scientific fields
by Usman Paracha in SayPeople
Introduction:
Electromicrobiology is one of the rising subjects in the field of science. It combines the technology with biology.
In this subject, initially scientists found the transmission of electrical signals between the microbes. On a further note, in this subject, we study about the complex interaction between the microorganisms and technological devices while considering the novel electrical properties of the microorganisms i.e. accepting or donating the electrons from electrodes wi........ Read more »
Lovley, D. (2012) Electromicrobiology. Annual Review of Microbiology, 66(1), 391-409. DOI: 10.1146/annurev-micro-092611-150104
- May 11, 2013
- 01:34 PM
- 66 views
Birth of a Black Hole
by Perikis Livas in Tracing Knowledge
A new kind of cosmic flash may reveal something never seen before: the birth of a black hole.... Read more »
Marcus Woo. (2013) Birth of a Black Hole. Caltech news . info:/
- May 10, 2013
- 09:32 AM
- 49 views
Scientists Use Cyborg Plants to Harvest Solar Energy
by dailyfusion in The Daily Fusion
Our star, the Sun, provides most of the energy on this planet. (Essentially, all the energy except for nuclear, comes directly or indirectly from it.) Our current methods of converting solar radiation into electricity (photovoltaics) are not very efficient in comparison with plants. Researchers at the University of Georgia looked to nature for inspiration, and they are now developing a new technology that makes it possible to use plants to generate electricity.... Read more »
Calkins, J., Umasankar, Y., O'Neill, H., & Ramasamy, R. (2013) High photo-electrochemical activity of thylakoid–carbon nanotube composites for photosynthetic energy conversion. Energy . DOI: 10.1039/C3EE40634B
- May 10, 2013
- 08:40 AM
- 57 views
Exotic atoms hold clues to unsolved physics puzzle at the dawn of the universe
by Perikis Livas in Tracing Knowledge
An international team of physicists has found the first direct evidence of pear shaped nuclei in exotic atoms.
The findings could advance the search for a new fundamental force in nature that could explain why the Big Bang created more matter than antimatter—a pivotal imbalance in the history of everything.... Read more »
Nicole Casal Moore. (2013) Exotic atoms hold clues to unsolved physics puzzle at the dawn of the universe. The Michigan State University. info:/
- May 9, 2013
- 06:10 AM
- 51 views
Herschel finds hot gas on the menu for milky way’s black hole
by Perikis Livas in Tracing Knowledge
ESA’s Herschel space observatory has made detailed observations of surprisingly hot molecular gas that may be orbiting or falling towards the supermassive black hole lurking at the centre of our Milky Way galaxy.... Read more »
ESA. (2013) Herschel finds hot gas on the menu for milky way's black hole. ESA Herschel. info:/
- May 8, 2013
- 05:24 PM
- 36 views
Dual Color Semiconductor Device Opens Way to Cheaper Lighting
by dailyfusion in The Daily Fusion
A group of scientists from the Arizona State University have developed a semiconductor device that is capable of emitting two distinct colors simultaneously. An ability to emit light in a wide spectrum range from a single monolithic structure could potentially become a basis for a cheaper and more efficient lighting technology.... Read more »
Fan, F., Liu, Z., Yin, L., Nichols, P., Ning, H., Turkdogan, S., & Ning, C. (2013) Simultaneous two-color lasing in a single CdSSe heterostructure nanosheet. Semiconductor Science and Technology, 28(6), 65005. DOI: 10.1088/0268-1242/28/6/065005
- May 8, 2013
- 01:38 PM
- 40 views
Fluorescent Dye Increases Solar Cells’ Efficiency
by dailyfusion in The Daily Fusion
Scientists at Yale think that for some solar cells the future may be fluorescent. While many may believe that the purpose of a solar cell is to absorb light, not to emit it (fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation), it turns out that the addition of a fluorescent organic dye to the cell layer improves the ability of a promising type of solar cell to absorb light and convert it into electrical power.... Read more »
Huang, J., Goh, T., Li, X., Sfeir, M., Bielinski, E., Tomasulo, S., Lee, M., Hazari, N., & Taylor, A. (2013) Polymer bulk heterojunction solar cells employing Förster resonance energy transfer. Nature Photonics. DOI: 10.1038/nphoton.2013.82
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