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| June 02, 2014 |
 Unexpected water explains surface chemistry of nanocrystals Berkeley CA (SPX) Jun 01, 2014 - Danylo Zherebetskyy and his colleagues at the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) found unexpected traces of water in semiconducting nanocrystals. The water as a source of small ions for the surface of colloidal lead sulfide (PbS) nanoparticles allowed the team to explain just how the surface of these important particles are passivated, meaning how th ... more |  |
DNA nanotechnology places enzyme catalysis within an arm's length Tucson AZ (SPX) May 29, 2014 - Using molecules of DNA like an architectural scaffold, Arizona State University scientists, in collaboration with colleagues at the University of Michigan, have developed a 3-D artificial enzyme cascade that mimics an important biochemical pathway that could prove important for future biomedical and energy applications. The findings were published in the journal Nature Nanotechnology. Led ... more |  |
 Scientists unveil first method for controlling the growth of metal crystals Warwick, UK (SPX) May 28, 2014 - Researchers have announced the first ever method for controlling the growth of metal-crystals from single atoms. Published in the journal Nature Communications and developed at the University of Warwick, the method, called Nanocrystallometry, allows for the creation of precise components for use in nanotechnology. Professor Peter Sadler from the University's Department of Chemistry comment ... more |  |
NIST studies why quantum dots suffer from 'fluorescence intermittency' Washington DC (SPX) May 26, 2014 - Researchers at the National Institute of Standards and Technology (NIST), working in collaboration with the Naval Research Laboratory, have found that a particular species of quantum dots that weren't commonly thought to blink, do. So what? Well, although the blinks are short-on the order of nanoseconds to milliseconds-even brief fluctuations can result in efficiency losses that could caus ... more |  |
Bending helps to control nanomaterials Helsinki, Finland (SPX) May 23, 2014 - A new remedy has been found to tackle the difficulty of controlling layered nanomaterials. Control can be improved by simply bending the material. The mechanism was observed by Academy Research Fellow Pekka Koskinen from the Nanoscience Center of the University of Jyvaskyla together with his colleagues from the University of Massachusetts Amherst in the US. Bending decreases interaction be ... more |  |
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Engineers build world's smallest, fastest nanomotor Austin TX (SPX) May 22, 2014 - Researchers at the Cockrell School of Engineering at The University of Texas at Austin have built the smallest, fastest and longest-running tiny synthetic motor to date. The team's nanomotor is an important step toward developing miniature machines that could one day move through the body to administer insulin for diabetics when needed, or target and treat cancer cells without harming good cells ... more |  |
 Rounding up the BCATs on the ISS Cleveland OH (SPX) May 19, 2014 - Although it may not be herding cats exactly, all the NASA-supported Binary Colloidal Alloy Tests (BCAT) studies have ended on the International Space Station, and the experimental samples are being rounded up and returned to the participating scientists. The BCAT series of investigations aims to understand fluids and the physics behind their movement. This research might help in designing new st ... more |  |
Nanoscale heat flow predictions Heidelberg, Germany (SPX) May 14, 2014 - Physicists are now designing novel materials with physical properties tailored to meet specific energy consumption needs. Before these so-called materials-by-design can be applied, it is essential to understand their characteristics, such as heat flow. Now, a team of Italian physicists has developed a predictive theoretical model for heat flux in these materials, using atom-scale calculations. ... more |  |
 Organism that transmits added letters in DNA alphabet created La Jolla CA (SPX) May 12, 2014 - Scientists at The Scripps Research Institute (TSRI) have engineered a bacterium whose genetic material includes an added pair of DNA "letters," or bases, not found in nature. The cells of this unique bacterium can replicate the unnatural DNA bases more or less normally, for as long as the molecular building blocks are supplied. "Life on Earth in all its diversity is encoded by only two pai ... more |  |
Harnessing Magnetic Vortices for Making Nanoscale Antennas Upton NY (SPX) May 06, 2014 - Scientists at the U.S. Department of Energy's Brookhaven National Laboratory are seeking ways to synchronize the magnetic spins in nanoscale devices to build tiny yet more powerful signal-generating or receiving antennas and other electronics. Their latest work, published in Nature Communications, shows that stacked nanoscale magnetic vortices separated by an extremely thin layer of copper can b ... more |  |
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New method for measuring the temperature of nanoscale objects discovered Exeter, UK (SPX) May 05, 2014 - Temperature measurements in our daily life are typically performed by bringing a thermometer in contact with the object to be measured. However, measuring the temperature of nanoscale objects is a much more tricky task due to their size - up to a thousand times smaller than the width of a human hair. Pioneering research, published in Nature Nanotechnology, has now developed a method to acc ... more |  |
Fluorescent hybrid material changes colour according to the direction of the light Basque Country, Spain (SPX) May 05, 2014 - The UPV/EHU's Molecular Spectroscopy Group, in collaboration with the Institute of Catalysis and Petroleum Chemistry of the CSIC (Spanish National Research Council), has developed a highly fluorescent hybrid material that changes colour depending on the polarisation of the light that it is illuminated by. The research has been published in ACS Photonics, the new journal devoted exclusively to Ph ... more |  |
 Economics = MC2 A portrait of the modern physics startup Washington DC (SPX) Apr 24, 2014 - For much of the 20th century, many of the technological innovations that drove U.S. economic growth emerged from "idea factories" housed within large companies - research units like Bell Labs or Xerox PARC that developed everything from the transistor to the computer mouse. In recent decades, however, many large high-tech companies have eliminated in-house research programs, turning inste ... more |  |
Nanomaterial Outsmarts Ions Dresden, Germany (SPX) Apr 27, 2014 - Ions are an essential tool in chip manufacturing, but these electrically charged atoms can also be used to produce nano-sieves with homogeneously distributed pores. A particularly large number of electrons, however, must be removed from the atoms for this purpose. Such highly charged ions either lose a surprisingly large amount of energy or almost no energy at all as they pass through a membrane ... more |  |
World's thinnest nanowires created by Vanderbilt grad student Nashville (UPI) Apr 29, 2013 - A Vanderbilt doctorate student has found a way to construct the world's thinnest nanowire - at just three atoms wide - using a finely focused beam of electrons. Junhao Lin, who has been conducting his research as a visiting scientist at Oak Ridge National Laboratory (ORNL), was able to create wiring out of atomic monolayers of transition-metal dichalcogenides, a special family of semi ... more |  |
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Proving uncertainty: New insight into old problem Washington DC (SPX) May 01, 2014 - Nearly 90 years after Werner Heisenberg pioneered his uncertainty principle, a group of researchers from three countries has provided substantial new insight into this fundamental tenet of quantum physics with the first rigorous formulation supporting the uncertainty principle as Heisenberg envisioned it. In the Journal of Mathematical Physics, the researchers reports a new way of defining ... more |  |
How to create nanowires only three atoms wide with an electron beam Nashville TN (SPX) Apr 30, 2014 - Junhao Lin, a Vanderbilt University Ph.D. student and visiting scientist at Oak Ridge National Laboratory (ORNL), has found a way to use a finely focused beam of electrons to create some of the smallest wires ever made. The flexible metallic wires are only three atoms wide: One thousandth the width of the microscopic wires used to connect the transistors in today's integrated circuits. Lin ... more |  |
Fluorescent-based tool reveals how medical nanoparticles biodegrade in real time Philadelphia PA (SPX) Apr 30, 2014 - have been heralded as a potential "disruptive technology" in biomedicine, a versatile platform that could supplant conventional technologies, both as drug delivery vehicles and diagnostic tools. First, however, researchers must demonstrate the properly timed disintegration of these extremely small structures, a process essential for their performance and their ability to be safely cleared ... more |  |
Cloaked DNA nanodevices survive pilot mission Boston MA (SPX) Apr 25, 2014 - It's a familiar trope in science fiction: In enemy territory, activate your cloaking device. And real-world viruses use similar tactics to make themselves invisible to the immune system. Now scientists at Harvard's Wyss Institute for Biologically Inspired Engineering have mimicked these viral tactics to build the first DNA nanodevices that survive the body's immune defenses. The results pa ... more |  |
Nano shake-up Newark DE (SPX) Apr 22, 2014 - Significant advances have been made in chemotherapy over the past decade, but targeting drugs to cancer cells while avoiding healthy tissues continues to be a major challenge. Nanotechnology has unlocked new pathways for targeted drug delivery, including the use of nanocarriers, or capsules, that can transport cargoes of small-molecule therapeutics to specific locations in the body. ... more |  |
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