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The Nanogirl News~

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  • Gina Miller
    The Nanogirl News August 30, 2002 Charting the future of nanogeoscience. How does a tiny sulfide particle travel from a Chinese factory to California? And how
    Message 1 of 84 , Aug 31, 2002
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      The Nanogirl News
      August 30, 2002

      Charting the future of nanogeoscience. How does a tiny sulfide particle
      travel from a Chinese factory to California? And how does it react when it
      gets there? Scientists don't know precisely, which is one of many reasons
      Berkeley Lab researchers are helping to shape the future of a new field
      called nanogeoscience. As the name implies, it's the study of geological
      processes involving particles no larger than 100 nanometers, meaning in some
      cases as small as a few atoms across. Such particles play critical roles in
      carbon sequestration, air pollution, and even the removal of toxins from
      soil. (Berkeley Lab Science Beat 8/26/02)

      Unnatural optics create precise photonic lens. Optical experiments using
      arrays of nanowires are demonstrating that the concept of a negative
      refractive index could be realized in practical systems. The work, done at
      Purdue University, attempts to reproduce results similar to those shown last
      year at the University of California at San Diego using microwave radiation.
      A negative refractive index, which is not found in nature, would allow
      scientists to construct new types of microscopes with unprecedented
      resolution and could allow the creation of novel photonic devices. (EETimes

      Scientists get to grips with what makes geckos stick. Geckos, those tiny
      lizards Britons most often see scurrying up walls in rural Provence, have
      taught engineers a thing or two about getting a grip...The answer lies in an
      evolutionary masterpiece of nanotechnology. Dr Autumn and colleagues from
      California report in the Proceedings of the National Academy of Sciences
      that gecko feet are covered in hairs called setae. Each hair is 100
      millionths of a metre long. It has 1,000 pads at the tip, and these pads, or
      spatulae, are 200 billionths of a metre wide... The discovery could lead to
      a dry, self-cleaning adhesive that works under water, or in the vacuum of
      space. The team is working with a robotics firm to design tiny automata that
      could climb even when upside down... (Guardian Unlimited 8/27/02)

      Scientists creating radiation sensors so small, they fit inside blood cells.
      Researchers are creating "Star Trek"-like radiation sensors that are so
      small, they could be absorbed into the white blood cells of astronauts and
      could someday be used to treat and diagnose illnesses. Astronauts
      constantly are exposed to radiation, and radiation-induced illness is a
      serious concern in space travel. The sensors would continuously monitor for
      early signs of damage, said Dr. James Baker Jr., a University of Michigan
      scientist who is directing the project. With the nano-molecular devices in
      their white blood cells, astronauts would feel no more intrusion than when
      they fly with regular staples, such as freeze-dried food.
      (HindustanTimes.com 8/22/02)

      nPoint Announces New 3-Axis Nanopositioner for Optical and Scanning Probe.
      PiezoMAX Product Line Offers the Fastest and Most Precise Nanoscale Motion
      And Control -- Bringing a New Level of Microscopy Performance to R&D
      Applications. nPoint, Inc., the global leader in ultra-precision motion and
      control nanopositioners for nanoscale research and manufacturing, has
      announced a new member of its PiezoMAXT product line. The N-XYZ100B is used
      for microscopy applications that require transmitted light through the
      sample, such as the traditional inverted optical microscope, confocal
      microscope, and near-field scanning optical microscope (NSOM). The aperture
      enables a light beam to pass through the sample, while the nanopositioner
      allows the sample to be moved and controlled within nanometer range.
      (Hoover's Online 8/27/02)

      An Exciting New State For Excitons. Researchers with the Lawrence Berkeley
      National Laboratory (Berkeley Lab), in collaboration with a scientist at the
      University of California's Santa Barbara campus, have reported the
      observation of excitons that display a macroscopically ordered electronic
      state which indicates they have formed a new exciton condensate. The
      observation also holds potential for ultrafast digital logic elements and
      quantum computing devices...The observations were made by shining laser
      light on specially designed nano-sized structures called quantum wells which
      were grown at the interface between the two semiconductors. (Science Daily

      Nanoscience: Big Interest in Studying the Very Small. Nobody knows what the
      Incredible Shrinking Man saw when he disappeared from view, but the U.S.
      Department of Energy wants to find out. The agency is building five
      nanoscience facilities across the country that will study the science of the
      very small. Nanoscience investigates interactions, reactions, and
      construction of materials the size of atoms and molecules. And, it turns
      out, the Incredible Shrinking Man-made famous in a 1957 science-fiction
      film-would have been quite surprised by what that tiny world looks like.
      "Materials behave very differently on a nano scale," said Don Parkin,
      associate director of the Center for Integrated Nanotechnologies, which will
      be operated by Sandia and Los Alamos national laboratories in New Mexico.
      (National Geographic from Scripps Howard news service 8/22/02)

      No fairy tale: Researchers spin straw into gold. Grains contain gold in
      forms that seem tailor-made for industrial use...Rumpelstiltskin, the
      fairy-tale rogue who spun straw into gold, has nothing on Miguel Yacaman and
      Jorge Gardea-Torresdey. The two University of Texas researchers have
      developed a way to draw gold from wheat, alfalfa, or - best of all -
      oats...The work represents the first time researchers have reported that
      living plants form these gold micro-nuggets, opening "exciting new ways to
      fabricate nanoparticles," according to Dr. Gardea-Torresdey, who heads the
      chemistry department at the University of Texas at El Paso. He notes that
      current approaches to making gold nanoparticles, now used as tags for
      studying cellular processes in biology and coveted for use as electrical
      contacts in nanoelectronic circuits, are expensive and involve chemical
      processes that generate pollution. The use of plants, he holds, "is both
      cost-effective and environmentally friendly." (CSMonitor.com 8/29/02)

      (Interview with Timothy Weihs Reactive NanoTechnologies Inc.) A better bond.
      Hopkins scientists have come up with an easier way to join diverse materials
      like ceramic armor onto metal tanks; Will their nanotech discovery become a
      macro-economic success? With a foil made up of incredibly thin layers of
      simple elements, two professors at the Johns Hopkins University say they
      have discovered a better way to bond metal and ceramic components. Don't let
      your eyes glaze yet: This nanotech solution could tap into a $10 billion
      market. You recently received $2 million in venture funding for your bonding
      foil. How does it work?...
      (Sunspot.net 8/23/02)

      Cambridge University Spinoff Devises Array for Swift, Cheap Resequencing. A
      small British company said it is close to unveiling a prototype of a novel
      single-molecule array that can resequence an individual human genome with
      single-base resolution at a fraction of the time and cost of currently used
      methods. The technology being developed by the company, Solexa, is an
      unaddressed and monodispersed high-density array designed to deliver
      base-by-base sequencing without the need for DNA amplification, the company
      said. There are two principle components to the technology, said Nick
      McCooke, the company's CEO: The actual nanotechnology-based single-molecule
      array platform, currently in the pre-prototype stage, and a sequencing
      chemistry, which is expected to appear early next year. (Genomeweb.com

      Hope for nano-scale delivery of medicine using a light beam to move liquid
      through tiny tubes. Medical researchers would like to use nano-scale tubes
      to push very tiny amounts of drugs dissolved in water to exactly where they
      are needed in the human body. The roadblock to putting this theory into
      practical use has been the challenge of building pumps small enough to do
      the job. In addition to the engineering challenge of building a nano-scale
      pump, there is the added complication of clogging by any biological molecule
      that can occur in valves small enough to fit a channel the size of bacteria.
      The solution - discovered by researchers at Arizona State University - is to
      create a system that does not rely on mechanical parts. The ASU team of
      scientists and engineers reports in the American Chemical Society journal
      Langmuir (Thursday, August 29, 2002) on a technique they developed to pull
      water up a tube tinier than a straw by shining a beam of light on the
      surface of the tube. (Eurekalert 8/28/02)

      Manufacturing now a high-tech business. you weren't thinking about
      nanotechnology in the context of manufacturing, think again. When the 75th
      International Manufacturing Technology Show 2002 kicks off next week at
      McCormick Place, you will be able to see "the world's most accurate machine"
      on display by Moore Nanotechnology Systems of New Hampshire. "In our
      industry, nanotechnology has particular importance in areas like optics,"
      notes Charlie Carter, vice president of technology for the Association for
      Manufacturing Technology. (Sun Times 8/26/02)

      Nano research challenges storage limit. The computer hard-drive industry
      might get an unexpected research boost from a study about how densely
      magnetic bits can be packed, which was debated Monday at a nanotechnology
      conference. Most of the research at the Institute of Electrical and
      Electronic Engineers event, which focuses on developments in the science of
      manipulating matter at the atomic or molecular levels, look several years
      into the future. The nanomagnetics work of Larry Bennett, a research faculty
      member at George Washington University's Ashburn, Va., campus, and Ed Della
      Torre of the National Institute of Standards and Technology's Metallurgy
      Division in Gaithersburg, Md., could affect today's hard-drive designers,
      however. (UPI 8/26.02)

      (An anti-nanotechnology article by the environmentalist group ETC Group) No
      Small Matter! Nanotech Particles Penetrate Living Cells and Accumulate in
      Animal Organs. Issue: At a mid-March fact-finding meeting at the US
      Environmental Protection Agency (EPA), researchers reported that
      nanoparticles are showing up in the livers of research animals, can seep
      into living cells, and perhaps piggyback on bacteria to enter the food
      chain. The commercial use of nanoscale carbon was likened to either "the
      next best thing to sliced bread or the next asbestos." Despite these
      revelations, there is no regulatory body (and no plans for one) dedicated to
      overseeing this potent and powerfully invasive new technology. (etcgroup.org
      The New York Times on 8/19/02 covers the ETCs request for banning,
      discussing both sides of this issue. See:

      UCI gold chain study gets to heart of matter. Discovery reveals smallest
      size molecules form functional structures; nanotechnology, research
      implications may be significant. While it may not make much of an
      anniversary present, a gold chain built atom by atom by UC Irvine physicist
      Wilson Ho offers an answer to one of the basic questions of
      nanotechnology-how small can you go? In the first study of its kind, Ho and
      his colleagues have discovered the molecular phase when a cluster of atoms
      develops into a solid structure, a finding that can have a significant
      impact in the future development of metal structures built at the molecular
      scale. (UCI news release 8/28/02)

      Beyond Alchemy & the Wright Brothers: Nanosecrets of Everyday Things...For
      15 years, ever since K. Eric Drexler's Engines of Creation launched the
      nanocraze, the field has been plagued by sci-fi notions of tiny robotic
      "molecular assemblers" running around shoving atoms together. But as
      buckyball pioneer Richard Smalley remarks, molecular assemblers have long
      existed: "We call them catalysts." Catalysts are "helper" substances that
      promote chemical reactions without themselves being consumed. Nature's
      catalysts, enzymes, assemble only specific end products. Industrial
      catalysts are rarely so precise. Gabor Somorjai of Berkeley Lab's Materials
      Sciences Division, a professor of chemistry at UC Berkeley, notes that "you
      can increase the octane rating of gasoline remarkably" by catalyzing its
      hydrocarbon precursor over platinum, "but there are at least seven or eight
      directions the reaction can go." (ICA Syndicate 8/02)

      Out of their minds. Here we go again . . . pundits can't stop hyping the
      business opportunities of artificial intelligence. In 1983, artificial
      intelligence appeared on the mainstream business radar. That was the year a
      book entitled The Fifth Generation (Addison Wesley) slammed onto the
      best-seller lists. In it, authors Edward Feigenbaum and Pamela McCorduck
      described how the Japanese government was investing billions of dollars to
      create machines that could think. "In Japan, a vast government-backed
      project is developing the next stage of computers," read the jacket copy.
      "Giant machines, programmed to perform logical functions approaching human
      reasoning, will make our present computers look like children's toys." There
      is some Ray Kurzweil bashing in this article. (Red Herring 8/23/02)

      (Cover Story) Drug Delivery. Materials scientists look for new materials and
      ways to manipulate existing ones in order to fulfill unmet needs. Scaffold
      Highly branched dendrimers, depicted here among cells shown in green, may
      one day deliver drug molecules (Center for Biological Nanotechnology,
      University of Michigan)..."We envision long-circulating nanoscopic drug
      depots that may produce controlled levels of free drug in blood over time
      and perhaps drug release solely at disease tissue," Kwon told C&EN.
      3 Pages. (C&E 8/26/02)

      Nanomedicine and the Future of Healthcare. As the phrase nanotechnology
      slowly enters the household vocabulary scientists in a wide range of
      industries is looking for potential applications. This article will examine
      the consequences nanotechnology will have in the medical industry and
      subsequently the healthcare industry in general. Mentions; Transhumanists,
      stemcells and cloning, artificial blood, medical nanosensors, DNA chips, The
      International Necronautical Society and references. (Plausible Futures
      Newsletter 12/08/02) http://www.plausiblefutures.com/text/nanomed.htm

      Researchers Say "Frustrated Magnets" Hint At Broader Organizing Principle In
      Nature. When "frustrated" by their arrangement, magnetic atoms surrender
      their individuality, stop competing with their neighbors and then practice a
      group version of spin control -- acting collectively to achieve local
      magnetic order -- according to scientists from the Commerce Department's
      National Institute of Standards and Technology, Johns Hopkins University and
      Rutgers University writing in the Aug. 22, 2002, issue of the journal
      Nature. The unexpected composite behavior detected in experiments done at
      the NIST Center for Neutron Research (NCNR) accounts for the range of
      surprising ---and, heretofore, unexplainable ---properties of so-called
      geometrically frustrated magnets, the subject of intensifying research
      efforts that may lead to new types of matter. (ScienceDaily Magazine

      America's Might: A Comic Tale. According to Radix's comic book creators Ray
      and Ben Lai, MIT used an image from the first issue without permission. The
      image, a drawing of heroin Valerie Fiores was submitted with a MIT grant
      proposal to the Army's Institute for Soldier Nanotechnologies. The grant
      which was for super next generation of soldiers' battlefield armor was
      approved and awarded to MIT in the sum of $50 million dollars. "In the MIT
      proposal, the picture was credited to an "H. Thomas." MIT professor Ned
      Thomas, who heads the 150-person nanotechnology institute, told News.com
      that his daughter had drawn it...If the Lais are mulling a lawsuit, they may
      not have much luck, according to copyright experts.
      (Wired 8/28/02) http://www.wired.com/news/politics/0,1283,54815,00.html

      Tiny ventures. Circuits made of molecules will supplant
      silicon...eventually. But for now, the smart money is starting small. The
      discovery came as a shock to chip engineers who had spent their careers
      worrying about how to etch ever smaller circuits on to silicon wafers. Their
      articles in technical reviews would anxiously express the need for circuits
      to get smaller while conceding that it takes millions of molecules to make a
      transistor or any other kind of switch. It was a formidable limit. In 1998,
      however, their worries were eased by the discovery of molecular
      electronics--the use of individual molecules or small groups of molecules as
      circuit elements--by Mark Reed of Yale University and James Tour of Rice
      University. (Red Herring 8/26/02)

      Convergent technologies: Is your company ready for the future? The
      convergence of nanotechnology, biotechnology, information technology, and
      cognitive science will have a substantial impact on companies and markets in
      the future. Though technology convergence is still only a concept, it is
      already beginning to define the global marketplace. Technologies such as
      connections between the brain and machines, wearable health monitors, smart
      houses made of environment-sensitive materials are not science fiction
      anymore, but are scientifically feasible. (Eurekalert 8/27/02)

      Researchers develop 'fingerprinting' for biological agents. Northwestern
      University scientists have developed a new method for detecting infectious
      diseases, including those associated with many bioterrorism and warfare
      threats such as anthrax, smallpox and HIV. The technique could enable
      researchers to create thousands of DNA detection probes made of gold
      nanoparticles with individual molecules attached. Much like human
      fingerprints, these molecules act as unique signals for the presence of
      biological agents. The method can easily distinguish smallpox's distinct
      "fingerprint" from that of HIV. (Eurekalert 8/29/02)

      Nano, Nano! - Part 2. (interview with Nanomix's Jeff Wyatt w/ text and
      audio) Nano-grapes are actually spherical molecules of boron seen under an
      electron microscope. Nanomix is investigating this material for its hydrogen
      storage properties. If mankind is ever going to transition away from our
      over-dependence on fossil fuels - - and not to do so expeditiously invites
      global disaster - - we have to come up with a clean, renewable energy
      substitute and at present, hydrogen is the best candidate. But hydrogen,
      which is an energy carrier, has to be stored in concentrations sufficient
      enough to produce useful amounts of energy. This is especially true in the
      case of the modern automobile...Nanotube technology is of great interest
      because it might offer a relatively inexpensive medium in which to store
      sufficient quantities of pure, gaseous hydrogen safely to give a motor
      vehicle useful working range or a laptop computer useful working time. (EV
      World 8/24/02)
      To read part 1:

      Walking on nano-eggshells. By depositing metal films on to microscopic
      beads, researchers have made metal half-shells with interesting properties
      such as superhydrophobicity. (Nature 8/29/02)

      Nanoscale patterns boost magnetic density. Increasing magnetic recording
      density has become an important goal for many in the hard-disk-drive
      industry. But recording on a continuous film at higher densities generally
      means decreasing the grain size, and that can cause the magnetization of the
      grains to become thermally unstable. Now, a team of scientists from IBM has
      developed a film-patterning technique that could overcome this issue and
      suit large-scale manufacturing. (Nanotechweb.org 8/29/02)

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