http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. (PhysOrg.com) -- Scientists at the U.S. Department of Energy`s Brookhaven National Laboratory have found a new way to use a synthetic form of DNA to control the assembly of nanoparticles - this time resulting in switchable, three-dimensional and small-cluster structures that might be useful, for example, as biosensors, in solar cells, and as new materials for data storage. The work is described in Nature Nanotechnology, published online December 20, 2009. http://www.physorg.com/news180624054.html Nanotechnology Mon, 21 Dec 2009 13:21:26 EST news180624054 A single-atom-thick sheet of carbon, like those seen in pencil marks -- offers great potential for new types of nanoscale devices, if a good way can be found to mold the material into desired shapes. http://www.physorg.com/news180256587.html Nanotechnology Thu, 17 Dec 2009 07:18:00 EST news180256587 (PhysOrg.com) -- With its complete lack of atoms, a vacuum is often considered to be the best known insulator. For this reason, vacuums are regularly used to reduce heat transfer, such as in the lining of a thermos to keep beverages hot or cold. However, in a recent study scientists have found a material even less able to conduct heat: a stack of photonic crystals layered within a vacuum can create a material with a thermal conductance just half that of empty space alone. http://www.physorg.com/news179672831.html Physics Thu, 10 Dec 2009 13:07:50 EST news179672831 (PhysOrg.com) -- As technology shrinks ever smaller, interest in objects and devices on the nanoscale becomes more apparent. However, visualizing these objects in three dimensions comes with special challenges. Alexander Govyadinov, a scientist at the University of Pennsylvania, points out that imaging nano-objects in 3-D typically requires measurements of the optical phase, a task which is so difficult that it is rarely done. http://www.physorg.com/news178870057.html Physics Tue, 01 Dec 2009 08:30:02 EST news178870057 (PhysOrg.com) -- In an effort to make graphene more useful in electronics applications, Kansas State University engineers made a golden discovery -- gold "snowflakes" on graphene. http://www.physorg.com/news174590038.html Nanotechnology Mon, 12 Oct 2009 18:15:28 EST news174590038 Dr. Jiwoong Park of Cornell University, who receives funding for basic research from the Air Force Office of Scientific Research (AFOSR), is investigating carbon nanostructures that may some day be used in electronic, thermal, mechanical and sensing devices for the Air Force. http://www.physorg.com/news173036704.html Nanotechnology Fri, 25 Sep 2009 02:50:01 EST news173036704 Researchers in California are reporting development of a so-called "NanoPen" that could provide a quick, convenient way of laying down patterns of nanoparticles - from wires to circuits - for making futuristic electronic devices, medical diagnostic tests, and other much-anticipated nanotech applications. A report on the device, which helps solve a long-standing challenge in nanotechnology, appeared in ACS' Nano Letters. http://www.physorg.com/news171115212.html Nanotechnology Wed, 02 Sep 2009 13:01:13 EST news171115212 By studying gold nanoparticles with highly uniform sizes and shapes, scientists now understand how they lose energy, a key step towards producing nanoscale detectors for weighing any single atom. http://www.physorg.com/news167912822.html Nanotechnology Mon, 27 Jul 2009 11:27:29 EST news167912822 Scientists at Argonne National Laboratory's CNM Nanophotonics Group have measured how light emission from individual colloidal semiconductor nanocrystals, or quantum dots, is modified when in proximity to smooth metal films. http://www.physorg.com/news167323390.html Nanotechnology Mon, 20 Jul 2009 15:43:54 EST news167323390 (PhysOrg.com) -- University of Missouri researchers recently showed how carbon nanostructures can be engineered to become excellent media for hydrogen storage, work that may be important for the advancement of hydrogen-energy technologies for vehicles and other applications, which have been slow to develop due to the lack of suitable storage materials. http://www.physorg.com/news162195986.html Nanotechnology Fri, 22 May 2009 07:27:40 EST news162195986 Researchers at the Harvard School of Engineering and Applied Sciences (SEAS), in collaboration with researchers from Worcester Polytechnic Institute (WPI), have demonstrated, for the first time, that the activation energy of impurities in semiconductor nanowires is affected by the surrounding dielectric and can be modified by the choice of the nanowire embedding medium. http://www.physorg.com/news160754028.html Nanotechnology Tue, 05 May 2009 14:54:34 EST news160754028 In the first demonstration of its kind, researchers at the University of British Columbia have controlled the spin of electrons using a ballistic technique--bouncing electrons through a microscopic channel of precisely constructed, two-dimensional layer of semiconductor. http://www.physorg.com/news159022445.html Physics Wed, 15 Apr 2009 13:54:39 EST news159022445 (PhysOrg.com) -- Some of the brightest colors in nature are created by tiny nanostructures with a structure similar to beer foam or a sponge, according to Yale University researchers. http://www.physorg.com/news157914340.html Physics Thu, 02 Apr 2009 18:06:05 EST news157914340 A team of scientists from Virginia Commonwealth University, the University of Uppsala in Sweden, and the Savannah River National Laboratory have identified that carbon nanostructures can be used as catalysts to store and release hydrogen, a finding that may point researchers toward developing the right material for hydrogen storage for use in cars. http://www.physorg.com/news157127835.html Nanotechnology Tue, 24 Mar 2009 15:37:54 EST news157127835 (PhysOrg.com) -- In order to save money and energy, many people are purchasing hybrid electric cars or installing solar panels on the roofs of their homes. But both have a problem -- the technology to store the electrical power and energy is inadequate. http://www.physorg.com/news156710943.html Nanotechnology Thu, 19 Mar 2009 19:50:01 EST news156710943 Researchers at Rice University have created a metamaterial that could light the way toward high-powered optics, ultra-efficient solar cells and even cloaking devices. http://www.physorg.com/news156182270.html Nanotechnology Fri, 13 Mar 2009 16:58:14 EST news156182270 A more specific and faster detection of viruses has been identified in new research by Trinity College Dublin's Professor of Physics, Martin Hegner at Trinity College's Centre of Research on Adaptive Nanostructures and Nanodevices (CRANN) and an international team of researchers. These findings have been published online in Nature News and will be published in the international peer-reviewed journal Nature Nanotechnology in March. http://www.physorg.com/news154097460.html Nanotechnology Tue, 17 Feb 2009 12:51:34 EST news154097460 Hollow gold nanospheres equipped with a targeting peptide find melanoma cells, penetrate them deeply, and then cook the tumor when bathed with near-infrared light, a research team led by scientists at The University of Texas M. D. Anderson Cancer Center reported in the Feb. 1 issue of Clinical Cancer Research. http://www.physorg.com/news152772851.html Nanotechnology Mon, 02 Feb 2009 04:55:02 EST news152772851 In the race to develop the next generation of storage and recording media, a major hurdle has been the difficulty of studying the tiny magnetic structures that will serve as their building blocks. Now a team of physicists at the University of California, Davis, has developed a technique to capture the magnetic "fingerprints" of certain nanostructures - even when they are buried within the boards and junctions of an electronic device. http://www.physorg.com/news152453882.html Physics Thu, 29 Jan 2009 12:18:41 EST news152453882 Researchers at Rensselaer Polytechnic Institute have discovered a new method for controlling the nature of graphene, bringing academia and industry potentially one step closer to realizing the mass production of graphene-based nanoelectronics. http://www.physorg.com/news151760486.html Nanotechnology Wed, 21 Jan 2009 11:42:37 EST news151760486 Arizona State University researchers Hao Yan and Yan Liu imagine and assemble intricate structures on a scale almost unfathomably small. Their medium is the double-helical DNA molecule, a versatile building material offering near limitless construction potential. http://www.physorg.com/news150048949.html Nanotechnology Thu, 01 Jan 2009 16:15:49 EST news150048949 (PhysOrg.com) -- Scientists have discovered a way to link nanowires and other nanoobjects into complex nanostructures and circuits by fusing them together with tiny amounts of solder. The researchers, from Sheffield University in the UK, expect that their method could be used to fabricate nanoelectronic test structures for research or to repair interconnects or other defects in circuits. http://www.physorg.com/news149774354.html Nanotechnology Mon, 29 Dec 2008 11:59:14 EST news149774354