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The Nanogirl News~

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  • Gina Miller
    The Nanogirl News May 24, 2003 MIT, Army open nanotech center. The Massachusetts Institute of Technology and the U.S. Army formally unveiled the Institute for
    Message 1 of 84 , May 24, 2003
      The Nanogirl News
      May 24, 2003

      MIT, Army open nanotech center. The Massachusetts Institute of Technology
      and the U.S. Army formally unveiled the Institute for Soldier
      Nanotechnologies, which is geared toward creating battlefield armor for the
      21st century. MIT on Thursday cut the ribbon on the nanotechnology
      institute, which was funded by a $50 million grant from the Army in 2002.
      Corporations including Dow Corning, DuPont, Raytheon and Carbon
      Nanotechnologies are participating in the center's development. In all,
      private companies have invested $40 million in the center. The center's
      research can largely be characterized as chemistry in action. During a
      ceremony held at the university on Thursday, researchers showed off a
      technique for applying new types of coatings to fabrics to make them more
      resistant to water or capable of killing bacteria.
      Other projects involve developing fabrics that will contract or expand like
      an accordion when exposed to electricity; these materials could potentially
      be used for in-field medical devices such as tourniquets. (CNet 5/23/03)

      Nanotech funding shifts to policy arena. The nascent nanotechnology industry
      needs to start playing by the same public-policy rules as other
      government-funded technology programs, the former chairman of the House
      Science Committee told the Nanobusiness 2003 conference here on Tuesday (May
      13). Former congressman Robert Walker, now a Washington lobbyist, reminded
      conferees that federal funding for nanotechnology research is close to final
      approval in Congress. "You are real, the House just passed the
      nanotechnology funding bill," Walker told about 150 executives. "Now you
      need to play in the public policy arena." (EETimes 5/13/03)

      Souped-up Superconductivity. For materials that carry electricity without
      resistance, a little nanotechnology turns a major turnoff into a turn-on,
      says a team of researchers. Ordinarily, a magnetic field quashes the
      currents flowing freely through a superconductor. But when decked out in
      tiny magnetic dots, a superconductor may behave just the opposite way and
      carry electricity freely only when exposed to a magnetic field, the team
      reports in the 16 May PRL. Their technique might someday boost the
      current-carrying capacity of superconducting wires, or set the bits in
      quantum computers.
      (Physical Review Focus 5/19/03)

      Nanotube Network to Simulate Brain Structures. NASA researchers have
      developed a way to grow miniscule networks of carbon nanotubes that are
      similar to brain synapses, in the hope of building smarter and more reliable
      computers. The lead scientist for the project, Deepak Srivastava, used
      computer simulation to build a network of carbon nanotubes that look and
      behave like the small spaces between nerve cells called synapses through
      which nerve impulses travel.
      (Betterhumans 5/21/03)

      Gallium nitride makes for a new kind of nanotube. To the growing list of
      nanosized objects created in a laboratory you can now add nanotubes
      synthesized from the prized semiconductor gallium nitride. A team of
      Berkeley Lab scientists has created gallium nitride nanotubes with diameters
      ranging between 30 to 200 nanometers. By comparison, a human hair has a
      diameter of about 100,000 nanometers. "These gallium nitride nanotubes are
      electronically and optically active and, because they're made from single
      crystals, exceptionally durable and uniform in their properties," says
      Peidong Yang, a chemist with Berkeley Lab's Materials Sciences Division and
      a professor with UC Berkeley's Chemistry Department who led this research.
      "They offer a wide range of opportunities for technological applications."
      (Berkeley Lab 5/12/03)

      When is a metal not a metal? The May 23 issue of the journal Science answers
      that question with an account of the surprising behavior exhibited by
      nanometer-scale clusters of the metal niobium. When the clusters are cooled
      to below 20 degrees Kelvin, electrical charges in them suddenly shift,
      creating structures known as dipoles. (EurekAlert 5/22/03)

      Turning Bubbles into Microscopic Syringes. Turning bubbles into microscopic
      syringes through the use of sound has been experimentally shown by
      researchers in the Netherlands (Claus-Dieter Ohl, University of Twente,
      011-31-53-489-5604), demonstrating a potential method for injecting drugs
      and genes into specific regions of a patient's body. Taking high-speed
      microscopic photographs, the researchers revealed that even bubbles much
      smaller than the thickness of a human hair could transform into a
      needle-like tube, delivering a billionth of a millionth of a gallon of
      liquid. While this sub-nanofluidic volume seems very small, it is more than
      enough to transfer large molecules (such as DNA and most drugs) into desired
      cells for medical therapy. (Physics News Update 5/14/03)

      Physicists Measure Individual Electrons In Real Time. Ultracold Experiment
      Opens Door for Basic Studies in Quantum Computing. Physicists at Rice
      University have completed the first real-time measurement of individual
      electrons, creating an experimental method that for the first time allows
      scientists to probe the dynamic interactions between the smallest atomic
      particles. The research, which appears in the May 22 issue of the journal
      Nature, is important for researchers developing quantum computers, a
      revolutionary type of computer that is orders of magnitude more powerful
      than any computer ever built.
      (Rice University 5/21/03)

      Berkeley Lab scientists determine electrical properties of carbon-60
      molecular layer. Using some of the world's most advanced photoelectron
      spectroscopy and computing techniques, Berkeley Lab scientists gained a more
      precise understanding of the electrical properties of fullerenes, those
      famous soccer-ball-shaped molecules comprised of 60 carbon atoms. The team,
      which also includes researchers from Stanford University and Europe,
      obtained the first experimental measurement of the range of energies
      possessed by electrons, as a function of their momenta, in a single layer of
      carbon-60 molecules doped with additional electrons, a step that transforms
      the molecule into one of the best known superconductors, meaning it conducts
      electricity without resistance below a certain critical temperature.
      (Berkeley Lab 5/12/03)

      New on the nanoscale: buckyball wires sheathed with boron nitride
      insulation. Berkeley Lab scientists have created insulated electrical wires
      that are about 100,000 times narrower in diameter than a human hair. These
      insulated wires are single-walled carbon nanotubes encased within an outer
      sheath of boron nitride nanotubes. The ultra-high-strength wires were
      reported in the April 18, 2003, issue of the journal Science. (Berkeley Lab

      ANI Demonstrates High Current Densities from Nanotube Electron Source.
      Applied Nanotech, Inc. (ANI) claims it has successfully demonstrated an
      electron emission current density of at least 15 Amps/cm2 using a gated
      carbon nanotube electron source. These high current density levels were
      achieved with high currents sufficient to address many applications where
      high electron current densities are required, such as CRT TVs, high power
      microwave devices, e-beam lithography and fine-focus x-ray tubes.
      (Nanoelectronicsplanet 5/13/03)

      Forschungszentrum Karlsruhe develops nano-structured material for hydrogen
      storage. The car of the future will use a fuel cell and will be refuelled
      with hydrogen. Unfortunately, such a refuelling process lasts more than one
      hour with most of today's technology. But now researchers of the
      Forschungszentrum Karlsruhe (research centre Karlsruhe, Germany) have made
      an important step on the way to a better hydrogen storage system. With
      custom-made nano-particles, researchers reckon they could reduce the
      refuelling time to a few minutes. To improve the storage process, the
      research team used nano-technology. With custom-made catalysts made from so
      called titanium nano-clusters, the researchers at the Institute for
      nano-technology shortened the refuelling times of today's hydrogen tank
      material to 7-8 minutes. (Fuel Cell Today 5/23/03)

      Forschungszentrum Karlsruhe Discovers Nanostructured Material that Directly
      Converts Electric into Mechanical Energy. Muscles of metal for miniaturized
      robots or small prostheses - this is one of the visions that may become true
      by a discovery made by the Forschungszentrum Karlsruhe. Scientists have
      developed a novel nanoporous metal that expands reversibly when an electric
      voltage is applied. In this way, electric energy can be converted directly
      into mechanical energy. For the first time worldwide, macroscopically
      measurable length changes have thus been induced in a metal by application
      of low electric voltages. This breakthrough allows various
      microtechnological components to be conceived, the industrial property
      rights of which have been applied for in the meantime: Switches and
      controls, direct voltage indicators or other sensors, actuators, and - by
      making use of the reverse effect - motion transducers. (Forschungszentrum

      NRC and Industry Announce Joint Initiative to Develop A Plastic
      'Supermaterial'. Nanotechnologies at the heart of the research partnership.
      The National Research Council Industrial Materials Institute (NRC-IMI) today
      (5/13) announced the launch of a new research and development (R&D)
      initiative in partnership with 13 major companies. Known as PNC-Tech, the
      initiative invests $300,000/year in R&D focused on the development of
      polymer nanocomposites, which are plastic-based materials with remarkable
      properties. (CCN Mathews 5/13/03)

      Nanotechnology promises to send incredibly tiny bio-medical machines to your
      body's rescue delivering drugs or making internal repairs. It all sounds so
      fantastic so just how do these miniscule devices work? Nanotechnologists are
      making incredibly tiny biomedical devices that may someday deliver drugs
      inside your body or repair internal injuries. As raw material, some
      researchers use only natural molecules like DNA and RNA. At UCLA, one
      biomedical engineer is designing what he calls bio bots from natural
      molecules and plastic parts. (KXAN t.v. 36 news in Austin Texas 5/22/03)

      Nanotube Shines Telecom Light. Researchers are continually working to expand
      the usefulness of carbon nanotubes-rolled-up sheets of carbon atoms found
      naturally in soot. Scientists from IBM Research have found a way to make the
      microscopic tubes emit light, and have fashioned a nanotube transistor that
      emits 1.5-micron infrared light, a wavelength widely used in
      telecommunications. Nanotubes can be smaller than one nanometer in diameter,
      and show promise as building blocks for fantastically small electronics and
      machines. A nanometer is one millionth of a millimeter, or about the length
      of a line of 10 hydrogen atoms. (MIT's Technology Review 5/6/03)

      Dip-Pen Nanolithography: Nanolithography: Rewriting the rules. Dip-pen
      lithography is generating a lot of interest because of its ability to
      pattern surfaces with miniaturized molecular arrays. Research is currently
      under way to investigate the potential of the technique for real
      applications. -PDF file- (from Materials Today 5/16/03)

      Nanocontainers Deliver Drugs Directly to Cells. One challenge to effective
      drug treatment is getting the medication to exactly the right place. To that
      end, researchers have been investigating myriad new methods to deliver
      pharmaceuticals. Findings published in the current issue of the journal
      Science indicate that tiny nanocontainers composed of polymers may one day
      distribute drugs to specific spots within individual cells. Radoslav Savic
      and his colleagues at McGill University tested the properties of tiny units
      built out of two types of polymers. The two compounds self-assemble into a
      spherical shape known as a micelle. (Scientific American 4/28/03)

      An Open Letter to Richard Smalley By K. Eric Drexler. Dr. Richard Smalley
      has voiced criticisms of Dr. Eric Drexler's concept of molecular assemblers,
      which could be used to implement self-replicating nanobots. Smalley, who
      discovered "fullerenes" (aka "buckyballs"), is Chairman of the Board of
      Carbon Nanotechnologies, Inc. and former director of Rice University's
      Center for Nanoscale Science and Technology. Drexler, who coined the term
      "nanotechnology" and is Chairman of the Board of Foresight Institute,
      responds to these criticisms. (KurzweilAI.net April 17th 2003)

      Call for entries: Science Journalism Awards. If you have written or produced
      a science story within the past year for a US publication, broadcast, or
      online media outlet, you are encouraged to submit an entry to the 2003 AAAS
      Science Journalism Awards by August 1, 2003.

      Have a happy and safe Memorial Day.

      Gina "Nanogirl" Miller
      Nanotechnology Industries
      Personal: http://www.nanogirl.com
      Foresight Senior Associate http://www.foresight.org
      Extropy member http://www.extropy.org
      "Nanotechnology: Solutions for the future."
    • picnet2
      Message 84 of 84 , Aug 14, 2008

        --- In nanotech@yahoogroups.com, AMIN shemirani <shemirani_ra_amin@...> wrote:
        > hi i want text about nano food please .
        > [Non-text portions of this message have been removed]
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