Nanotechnology |
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A year on from signing an alliance with Morph Technologies to bring nanottechnology to the automotive market, DuPont Engineering Polymers has announced a long-term alliance with California-based PowerMetal Technologies to develop and commercialise MetaFuse nanocrystalline metal/polymer hybrid technology. Initial development programs are targeting electronic hand-held devices, sporting goods, furniture, power tools and appliances. |
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Assembling thermoelectric materials into units can transform the thermal difference to electrical energy or vice versa – electrical current to cooling. But effective utilisation requires that the material to supply a high voltage and have good electrical conductivity and low thermal conductivity. |
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Research by physicists at the U.S. Department of Energy’s Brookhaven National Laboratory provides new insight into why some materials made of stacks of metallic planes are conductors in the direction of the planes and are insulators in the direction perpendicular to the planes. |
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Using data from one of the most comprehensive U.S. air pollution studies ever conducted, scientists at the U.S. Department of Energy’s Brookhaven National Laboratory have identified specific volatile organic compounds as key sources of excess ozone smog in industrial areas of Houston, Texas, which appear to be different from traditional sources of ozone pollution in typical urban areas around the country. |
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Scientists at the U.S. Department of Energy’s Brookhaven National Laboratory have found that the mere display of food, where food-deprived subjects are allowed to smell and taste their favorite foods without actually eating them, causes a significant elevation in brain dopamine, a neurotransmitter associated with feelings of pleasure and reward. |
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For the first time, scientists have created a material with a gradient of gold nanoparticles on a silica covered silicon surface using a molecular template. The material, which was developed at North Carolina State University and tested at the National Synchrotron Light Source at the U.S. Department of Energy’s Brookhaven National Laboratory, provides the first evidence that nanoparticles, each about one thousand times smaller than the diameter of a human hair, can form a gradient of decreasing concentration along a surface. |
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The idea that obese people eat too much because they find food more palatable than lean people do has gained support from a new brain-imaging study at the U.S. Department of Energy’s Brookhaven National Laboratory. The study reveals that the parts of the brain responsible for sensation in the mouth, lips, and tongue are more active in obese people than in normal-weight control subjects. |
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A team of scientists from the U.S. Department of Energy’s Brookhaven National Laboratory, the U.S. Department of Commerce’s National Institute of Standards and Technology, and the University of Oslo in Norway has provided new insight into the superconductivity of magnesium diboride, an unusual superconductor discovered only last year. |
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A team of scientists from the U.S. Department of Energy’s Brookhaven National Laboratory, the U.S. Department of Commerce’s National Institute of Standards and Technology, and the University of Oslo in Norway has provided new insight into the superconductivity of magnesium diboride, an unusual superconductor discovered only last year. |
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For the first time, scientists have observed the molecular details of biological cells fusing together, a fleeting event never before observed at this scale. Cellular membrane fusion is well known to scientists, and is one of the most common ways for molecules to enter or exit cells, in processes such as fertilization and viral infection, for example. |
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For nearly 200 years, scientists have known that the elements molybdenum and oxygen can form various large molecules, which usually impart a unique blue color to aqueous solutions. Only recently have scientists been able to isolate these molecules, but no one was able to explain their supramolecular structure in solution, until now. |
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Understanding the properties of nanoscale materials may allow scientists to manipulate these properties to produce new nanomagnets, nanocatalysts, and composites with better optical properties. But such applications require detailed knowledge of the materials' atomic level structure. |
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Scientists have developed and tested a new imaging technique that reveals the atomic structure of thin films with unprecedented resolution. For the first time, the technique has shown very precisely how the atoms of the first layers of a film rearrange under the action of the substrate on which the film is grown. |
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Scientists working at the National Synchrotron Light Source at the U.S. Department of Energy’s Brookhaven National Laboratory have unveiled the details of an important cancer protein. Though the protein, called Ski (for Sloan Kettering Institute, where it was identified in the early 1980s), is known to trigger tumor growth, how it does this is still not well understood. |
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Your co-worker has a cold. You know it is only a matter of time before the virus spreads to you and other colleagues, causing a spate of missed workdays. The ability to spread from person to person makes viral infections, even those as benign as the common cold, a large public health problem. |
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Scientists at the U.S. Department of Energy's Brookhaven National Laboratory and their collaborators have discovered that some viruses can use the most abundant protein in the cells they are infecting to destroy the cells and allow new viruses to escape to infect others. |
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A team of scientists from the U.S. Department of Energy's Brookhaven National Laboratory, Harvard University, and Bar-Ilan University in Israel have grown ultrathin films made of organic molecules on the surface of liquid mercury. |
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Scientists at the U.S. Department of Energy’s Brookhaven National Laboratory have demonstrated that a miniature positron emission tomography scanner, known as microPET, and the chemical markers used in traditional PET scanning are sensitive enough to pick up subtle differences in neurochemistry between known genetic variants of mice. |
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Working in the field of high-temperature superconductors, researchers from Brookhaven National Laboratory, Princeton University, and several institutions in Japan have determined the upper range of magnetic field at which copper-oxide compounds can be superconducting. |
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Scientists have built tiny liquid crystal devices on the tips of optical fibers, the plastic or glass cables used to carry high-speed signals from television, computer, telephone and radar, to correct signal distortions in high-speed optical communications. Optical communications form the backbone of the Internet and telephone networks and are envisioned to carry multimedia data in the future. |
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A brain-imaging study conducted at the U.S. Department of Energy's Brookhaven National Laboratory reveals that recently abstinent methamphetamine abusers who reported they avoided harmful situations had higher resting metabolic rates in a part of the brain responsible for making decisions and modifying behaviors than those with low harm-avoidance scores. |
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Molecular wires are seen by scientists as one key to producing ever-smaller and faster electronic circuits and switches, like those used in computers and complex electronic devices. |
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Scientists have refined a technique that uses the very intense light emitted by the National Synchrotron Light Source at the U.S. Department of Energy’s Brookhaven National Laboratory to determine the structure of chemically heterogeneous surfaces with a submillimeter resolution. |
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How do raindrops form? Physicists at the U.S. Department of Energy’s Brookhaven National Laboratory have proposed a new theory to explain how drizzle forms in warm rain clouds. |
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Scientists at the U.S. Department of Energy’s Brookhaven National Laboratory, in collaboration with researchers at Rush Medical College, have demonstrated the effectiveness of a novel x-ray imaging technology to visualize soft tissues of the human foot that are not visible with conventional x-rays. The technique, called Diffraction Enhanced Imaging, provides all of the information imparted by conventional x-rays as well as detailed information on soft tissues previously accessible only with additional scanning methods such as ultrasound or magnetic resonance imaging. |
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