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~Nanogirl News~

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  • Gina Miller
    ~Nanogirl News~ Started on Nov. 30, but somewhere midway this page, turned into Dec. 30 1999. *Technology feature : Focus on carbon nanotubes. They are the
    Message 1 of 46 , Dec 1, 1999
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      ~Nanogirl News~
      Started on Nov. 30, but somewhere midway this page, turned into Dec. 30

      *Technology feature : Focus on carbon nanotubes. They are the ultimate in
      electronic miniaturization: tube-shaped molecules of carbon, each scarcely
      wider than a filament of DNA, able to conduct electricity and to be bent,
      cut and moulded into circuit wiring or even into new electronic devices.
      They are called carbon nanotubes. Philip Ball takes an in-depth look at
      their past, present and future. (Nature Friday 26 November 1999)

      *Assembling Molecules an Atom at a Time. Wilson Ho, Cornell professor of
      physics, and graduate research assistant Hyojune Lee used a specially
      designed scanning tunneling microscope (STM) to pick up single molecules of
      carbon monoxide and graft them onto an iron atom to form molecules of iron
      carbonyl. By obtaining the new assembly's "vibrational spectrum" -- a
      measure of the energy in the bonds between atoms -- they verified that a
      chemical bond had truly been formed to produce a new molecule. (Cornell News
      Nov. 25, 99)

      *Controlling magnetic ordering in coupled nanomagnet arrays (Condensed
      matter: electronic structure, electrical, magnetic and optical properties)
      New Journal of Physics Nov 10, 99,. PDF paper, must download.
      Or see the html absctract:

      *Not Feeling Well? The Microchip Will See You Now. Biotech: Pasadena firm
      has created cheap plastic sensors that detect genes, helping doctors
      diagnose illnesses and target drugs. (L.A. Times November 29, 1999)

      *MICROFLUIDICS CAN BE DRIVEN BY HEAT rather than by electric fields.
      Microfluidics is to the mixing of fluids (including studies of blood, DNA,
      etc.) what integrated circuits are to the processing of electrical signals:
      transactions occur quickly, controllably, in a very small space. (AIP
      physics news update Nov. 99) Abstract with two links.

      *Honey, They Shrunk the Processor. Film buffs may vaguely recall "Fantastic
      Voyage," a 1966 sci-fi B movie involving a team of intrepid doctors who were
      magically miniaturized and injected into the bloodstream of a critically ill
      diplomat to conduct lifesaving microsurgery...blah blah blah, until
      discusses molecular-scale processors and molecular computers and throw away
      computing. (LA Times Nov 29, 99)

      *Theory Promotes Different Types of Intelligence. Albert Einstein was one of
      the greatest thinkers the world has ever known. An extraordinary polymath
      who left few branches of physics untouched, he formulated theories of
      relativity, successfully described the nature of the universe and came up
      with the most famous equation in the world. David Beckham is the footballer
      whose skill and precision have made him one of the most gifted sportsmen of
      his generation. His looks and Spice Girl wife add to the allure, but it is
      his pure talent that makes him a firm favourite as European Footballer of
      the Year, to be decided next month. Who is the more intelligent? (Fox Nov

      *Using Neural Networks. These programs can be taught to think like chemists
      about some kinds of problems.Inspired by theories of the brain in the 1940s,
      programmers devised neural networks, mathematical models that rely on
      varying the strength of connections between internal processing elements to
      interpret data. Knowing how to build a neural network is one thing, but
      knowing how to leverage it into a useful application is something much more
      important. (Todays Chemist at work Nov 99)

      *Materials World - December 1999 issue. 3D Sound Systems Using
      Groundbreaking Piezoelectric Springs; Stirring Stuff From Friction Welding;
      A Helping Hand For Materials Testing; Hard-Wearing Iron-Base Alloy Is Soft
      On The Pocket; Looking Into The Sole - Testing Shoe Materials; Shaping The
      Body From Memory.

      *Deinococcus radiodurans, is the most radiation-resistant creature known,
      able to survive a dose 3,000 times the amount of radiation that would kill a
      human (1956). Now, scientists report in the Nov. 19 issue of Science that
      they have deciphered the organism's complete genetic code, an advance they
      hope will lead to insights into how it manages to repair so efficiently the
      damage caused by radiation. (Columbus Dispatch Nov 28, 99)

      *Scientists fear review will lead to cuts. The aim of the review is to
      prevent duplication of research and increasing the Government's
      co-ordination of science, as well as communication between agencies. She
      said the review had arisen from the Government's biodiversity strategy
      (Sydney Morning Herald 29/11/99)

      *What If Cold Fusion Is Real? It was the most notorious scientific
      experiment in recent memory - in 1989, the two men who claimed to have
      discovered the energy of the future were condemned as imposters and exiled
      by their peers. Can it possibly make sense to reopen the cold fusion
      investigation? A surprising number of researchers already have. (Wired Nov)

      *SCIENCE Notebook. Snip= Although researchers study mice to learn more about
      people, it turns out that humans are more closely related to chickens than
      to the rodents, in at least one way. (Washington post Nov. 29,99)

      *New Perspectives: Multimedia in Analytical Chemistry. This is an article
      about computer generated 3D sctructure models with some good links to the
      software needed for those interested in interactive animation or or how to
      enhance results of an experiment. (Analytical Chemistry News & Features Nov

      *Magnetic Resonance Spectroscopy: Catching Up With Star Fleet Medical. "To
      boldly go where no NMR has gone before.." To any aficionado of Star Trek:
      The Next Generation, Deep Space Nine, or Voyager, the medical lab is a
      familiar place. (TCAW last month)

      *Einstein the greatest. Albert Einstein has been voted the greatest
      physicist of all time in an end of the millennium poll, pushing Sir Isaac
      Newton into second place. The survey was conducted among 100 of today's
      leading physicists. (BBC Nov 29, 99)
      See the entire 10 spot list.

      *Emerging from Hawking's shadow. In a new book, Jane Hawking � who was
      Stephen Hawking's wife for 30 years � spills the beans on her life with him.
      (Physics web Nov 99) Book review.

      *That cute little animated Comet Cursor, that some websites try to send you
      when you visit their site, is actually doing more than impressing the kids.
      It's also tracking your activity on over 60,000 websites using a unique
      serial number -- and all without asking. (Yahoo Nov.30,99)

      *Fastest PC chip unveiled. Computer chip maker AMD unveiled on Monday a new
      Athlon microprocessor that runs at a faster speed than Intel's latest
      Pentium III chip. (BBC Nov 30, 99) Sory includes company link.

      *CNN has a In Depth Special called The Next Millennium: Now What? What do
      the next 1,000 years hold for humanity? 14 experts from fields as diverse as
      language and sports sketch a view of the world to come. (I did spot an AI
      section=will robots be building the future)

      *Baby Elephant Born By Artificial Insemination. An Asian elephant has given
      birth through artificial insemination, an important milestone for an
      endangered species. Mother and son are doing fine. (Discovery Nov 30, 99)

      *Six New Planets Orbit Stars, Five In Livable Zone. The world's most
      prolific team of planet hunters has found six new planets orbiting nearby
      stars, bringing the total number of planets astronomers have detected
      outside the solar system to 28. The researchers also found evidence
      suggesting that two previously discovered planets have additional
      companions, said Steven Vogt, professor of astronomy and
      astrophysics at the University of California, Santa Cruz. (IniSci Nov 30 99)

      *Forum on Genetically-Modified Foods. The Food and Drug Administration holds
      a public hearing in Washington today to discuss the practice of using
      genetics to alter crops. Experts say the technology -- already used with
      corn, soybeans and many other foods -- is just as safe as accepted
      plant-breeding methods. But following protests in Britain, some Americans
      are raising questions about genetically-modified foods. In genetic
      engineering, DNA from bacteria and other organisms is injected into food
      crops to make them more resistant to pests or to give them other useful
      properties. Hear the audio on NPR. (Nov 30,99)

      *Sun poses new Y2K concerns. Scientists with the National Oceanic and
      Atmospheric Administration say that with the sun now moving toward solar
      maximum, power outages, computer problems, and communication failures are
      likely to increase during 2000 and 2001.-animation- (USA Today Nov99)

      *Plasma as an atenna. Soldiers can radio without detection, thanks to
      excited gas. You're in deep in enemy territory and need to radio your base
      to call in an air strike--but the long-range radio antenna you erect gives
      away your position to enemy radar, and you're sunk. Help may soon be at
      hand, however, in the shape of a new antenna that can be made invisible to
      radar in a fraction of a second. (New Scientist Nov.27,99)

      *This ones for Ed the dentist: Research finds genetic link to some types of
      gum disease."snip"-"We're were suggesting there is a genetic component in
      normal population for periodontal disease," said Glenn Nuckolls of the
      craniofacial development section of the National Institutes of Health, who
      was not involved in the study. "If you have this mutation, but you do a
      really good job of dental hygiene, you might push the onset of the disease
      to later in life."

      *Mars Mission Is Prelude to Manned Exploration. When the Mars Polar Lander
      touches down on the south pole of the Red Planet on Friday, the experiments
      it will carry out will be paving the way for an eventual manned exploration
      of the planet. (Fox Nov30,99)

      *Pondering Next Rung on the Evolutionary Ladder. (essay) f evolution is
      still unfolding, and most scientists believe it is, just how complex an
      organism could the evolutionary process create, before hitting some
      fundamental limit? (New York Nov 30,99)

      *Rat Research May Explain How Habits Are Developed. New brain research on
      rats may help scientists understand human conditions ranging from
      Parkinson's disease to addictive disorders, according to a report published
      in the Nov. 26th issue of the journal Science. (Fox Nov 30, 99)

      *Ethicists call for US panel on stem cells. It has been a year since
      scientists reported isolating ''stem cells'' from days-old human embryos,
      saying the feat could open a new medical frontier in which specialized cells
      derived from stem cells might be used to repair almost any body part damaged
      by disease or aging. Now, three bioethicists are calling for an end to the
      impasse and the establishment of a federal panel to oversee all embryo and
      stem cell research, both public and private. (Boston Globe Nov30,99)

      *Bone-marrow cells repair brains of animals.Bone-marrow cells repair brains
      of animals affected by strokes. Newsday IN SEARCH of ways to rebuild the
      brain, scientists have injected stem cells from bone marrow into the brains
      of rats and mice to see whether the cells, which continuously divide to
      rebuild tissue in the marrow, could do the same thing for the brain.(San
      Jose Mercury News)30 Nov 1999)

      *The search for smart genes. A British scientist continues his bold quest
      for patterns of intelligence in our DNA. It is one of the most important
      predictors of financial and social success. It helps determine where you
      work, where you live, whether you wind up in jail. It can be measured with
      great precision, and it changes very little over a lifetime. It is
      substantially influenced by your genes. Or is it? (SJ Mercury Nov.30,99)

      *Scientists unlock clue to secret of human life. Britain has won the
      international race to decode the complete genetic make-up of a human
      chromosome. It is a breakthrough that moves scientists closer to
      understanding the secrets of our life. Researchers at the Sanger Centre in
      Cambridge will announce this week that they have completely decoded
      chromosome 22, marking the first time that the complex chemical structure of
      a human chromosome has been revealed. (The Hindu-India-Nov 29, 99)

      *As new millennium madness, prophecies about living differently in the
      future, and concerns about Y2K computer malfunctions converge, the Alliance
      to Save Energy uses its "crystal ball" to take a tongue-in-cheek look at the
      expected growth of "Smart Homes" in the new millennium. (11/30/99)

      *Senesco Technologies, Inc. Announces Successful Transformation of
      Carnation. ("Senesco" or the "Company")(OTC BB: SENO) announced today that
      it has successfully produced transgenic carnation plants. Based on the
      delayed aging results to date, Senesco fully expects that flowers from these
      will have significantly extended shelf life. (Nov 29,99)

      *McCain rejects genetic tinkering. French-fry giant will stop buying altered
      potatoes.Starting next year, the Florenceville, N.B.,-based company will no
      buy genetically altered potatoes grown by farmers in New Brunswick and the
      rest of the country. "We think genetically modified material is very good
      science (but) at the moment, very bad public relations," said Harrison
      McCain. (Ottawa Citizen)

      *A government nuclear site has been hacked, and the original site is
      therfore down, however what was left behind seems to denote a bit of
      thanksgiving cheer.
      Or something like that. 11/29/99

      *"I'm not looking at this!" amazingsurgeries.com Is Proud To Announce The
      First Live Sex Change Operation (Male To Female) On The Interneton December
      10th 1999.

      *EU Approves Internet Digital Signature Law. European Union telecoms
      ministers approved on Tuesday a law giving digital signatures on contracts
      agreed over the Internet the same legal status as their hand-written
      equivalents, EU diplomats said. (11/30/99 Internet.com)

      *Physics : Lost correspondence. The marriage between quantum and classical
      mechanics has always been a compromise. Now, unable to meet each other
      halfway, the two may be considering separation. (Nature 11/26/99)

      *Two new Sandia 'sniffers' expand law enforcement abilities to detect
      explosives and narcotics. You might call it an "electronic dog." Researchers
      at the Department of Energy's Sandia National Laboratories have developed a
      hand-carried gadget that, like a trained police dog, could sniff out the
      vanishingly faint odors of drugs and bombs at airports, border crossings,
      military installations, and schools. (Sandia news release 11/30/99)

      *Futurists see an era of relentless innovation. The main enabling force in
      innovation over the next three decades will be biotechnology," says Paul
      Saffo, a director of the Institute for the Future in Menlo Park, Calif.
      Which, he says, is illustrative of a second overarching trend: Small is
      beautiful. (Nando 11/29/99)

      *Six New Planets Discovered. Astronomers announced Monday the discovery of
      six new planets orbiting other stars, bringing the total number of confirmed
      extrasolar planets to 28. The odd egg-shaped orbits of the new planets hint
      that our solar system, with its neatly organized and nearly circular
      planetary orbits, may be a rarity in the universe. (Discovery 11/30/99)

      *T. rex skeleton uncovered in S.D. The first nearly complete skeleton of a
      juvenile Tyrannosaurus rex has been uncovered in South Dakota, and
      scientists are prepared it for study in a Texas laboratory, researchers said
      Tuesday. (Nando Dec 1,99)

      *Challenges remain for blue diode lasers. Blue diode lasers could easily
      double or triple the storage capacity of optical data storage devices,
      bolstering a flagging growth rate in one of the world's largest
      optoelectronic industries. (OE Reports Dec 99) There is also a link on this
      page to transparent metals discovery article.

      *Memories of Fear. Researchers Discover How They Work. Scientists have
      identified the brain circuit where memories of fear are evaluated and
      expressed. Their discovery, published today in the British journal Nature,
      points the way toward possible treatments for anxiety disorders. (USC)

      "Well colour me informed"

      Gina "Nanogirl" Miller
      Nanotechnology Industries
      Personal Web
      E-mail: nanogirl@...
      "Nanotechnology: solutions for the future."
    • Gina Miller
      Nanogirl News~ Dec. 1, 2000 *Like a Dimmer Switch, Turning a Nanotube Can Control Electrical Flow. Scientists at the University of North Carolina at Chapel
      Message 46 of 46 , Dec 1, 2000
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        Nanogirl News~
        Dec. 1, 2000

        *Like a Dimmer Switch, Turning a Nanotube Can Control Electrical Flow.
        Scientists at the University of North Carolina at Chapel Hill and North
        Carolina State University have found that by rotating a carbon nanotube,
        they can control its ability to conduct electrical current to another
        material, just as you can control the flow of electricity to lights by
        turning a dimmer switch. (NC State 12/1/00)
        Also Scientists find that electrical resistance between nanotubes, graphite
        is tunable:

        *Buckyball superconductors hot up. When the 60-atom carbon molecule
        'buckminsterfullerene' or C60 was discovered in 1985, a member of the
        British House of Lords famously commented, "My Lords, can one say that it
        does nothing in particular and does it very well?" etc....(Nature/Science
        update 11/30/00)

        *Researchers improve quantum dot construction. Fashioning themselves
        "latter-day Edisons," researchers at the University of Nebraska contend that
        their architecture for quantum-dot development is 500 percent better than
        its nearest competition. Quantum-dot devices, which use the quantum nature
        of electrons to switch between binary states, could be a solution to
        problems encountered by ever-shrinking conventional transistors. (EETimes

        *Can Bone Marrow Repair The Brain? Bone marrow cells can transform
        themselves into brain cells, according to researchers who say their
        laboratory discovery may lead to new therapies for Parkinson's disease and
        other brain disorders. (CBS 12/1/00)
        Or from the National Institute of Neurological Disorders and Stroke:

        *Science and Amersham Pharmacia Biotech grand prize: "jumping DNA" discovery
        explains immune system evolution. By discovering jumping DNA's role in
        creating our modern-day immune system, Alka Agrawal earned this year's
        $25,000 Young Scientist Prize, awarded by Science and Amersham Pharmacia
        Biotech (APBiotech). Genes called RAG1 and RAG2 carry out genetic
        reshuffling in a test tube, she found. In theory, if they trigger
        transposition in living cells, too, they may be involved in harmful DNA
        translocations, Agrawal explains in Science. (Eurekalert 12/1/00)

        *RNA Editing Process Plays Essential Role in Embryo Development. In a new
        study, scientists at The Wistar Institute report the first direct evidence
        that RNA editing is essential to mammalian embryo development. RNA editing
        is a normal but not yet fully understood process in which small nucleotide
        changes occur after DNA has been transcribed into RNA. The process makes it
        possible for one gene to be translated into multiple proteins with different
        structures or functions. (Wistar Institute 11/30/00)

        *MIT, Compaq join forces on computer cluster to explore basic structure of
        matter. The Massachusetts Institute of Technology's Laboratory for Nuclear
        Science (LNS) today announced a research collaboration with Compaq Computer
        Corp. of Houston to develop a cluster of extremely powerful computers
        capable of doing calculations that will help researchers understand the
        structure of subatomic particles. (MIT 11/27/00)

        *When the Chips are Down. Scientists seek alternatives to a computer
        technology nearing its limits. (thanks Dave) Competition to make computer
        chips smaller, faster, and cheaper has fueled U.S. economic growth, driven a
        technological revolution, and made your once-flashy personal computer a
        relic in 2 years' time. Experts, however, predict this march toward
        miniaturization will hit a wall by about 2010. That's when transistors as we
        know them will have shrunk so close to the atomic scale that quantum physics
        will take over and the old rules of chip design won't hold. (Science news

        *New Technique Visualizes the Function of Synaptic Channels. Using a new
        technique, Howard Hughes Medical Institute researchers have visualized
        calcium channels in their native environment, showing the number and
        activity of the voltage-sensitive molecules that allow calcium to flow into
        (Howard Hughes Medical Institute 11/33/00)

        *Public backlash could be price of high-tech progress. Concerned about a
        growing public backlash against the latest advances in science and
        technology, major research organizations are taking some preventive
        medicine. By tackling the ethical and social issues raised by their
        research, government agencies and private companies hope to inoculate
        themselves against the kind of fear, misunderstanding, and hostility that
        has greeted such things as genetically modified foods and Dolly, the cloned
        sheep. (nanotech is also cited in this article) (Bergen Record 12/1/00)

        *(Here's an article about Cornell's latest nano-achievements. There are some
        quotes of people in this paper, including Merkle) Cornell team makes a
        mini-mini-machine. In the continuing march toward miniaturization,
        scientists have now not just built microbe-size contraptions, they have also
        found a way to make them move. Writing in Friday's issue of the journal
        Science, scientists at Cornell University report that they hooked up a tiny
        motor to a metal propeller and spun the propeller around at up to eight
        revolutions a second. "This is the first true nano-machine," said Carlo
        Montemagno,.(Deseret 11/25/00)

        *Broadest Comparison of Mouse/Human Genome Shows "Junk DNA" Possibly Not
        Junky, May Have Role in Cancer, Birth Defects. A just-published study is one
        of the first to show the power of sequencing the mouse genome in advancing
        research on humans. The work - which compares an unprecedentedly large
        amount of DNA of man and mouse - offers a sign that a part of the human
        genome called "junk DNA" may be more important than scientists have
        suspected, notably in a genetic phenomenon called imprinting. (Johns Hopkins

        *Boeing Launches International Technology Summit Program. The Boeing Company
        launches the first international summit designed to enhance collaboration
        between technology leaders, governments and other key stakeholders in the
        search for new technology solutions in aerospace, communications and beyond.
        The discussion topics principally focused on breakthrough technologies to
        gain improvements in areas including air traffic management, mobile
        connectivity and developments in nanotechnology and advanced manufacturing.
        (PR Newswire 11/28/00)
        Boeing news release:

        *Discovery offers clues to role of microbes in ore deposits. Probing the
        microscopic life found in the submerged recesses of an abandoned Wisconsin
        lead and zinc mine, scientists from the U.S. Department of Energy's Argonne
        National Laboratory and the University of Wisconsin-Madison have found
        compelling evidence that microorganisms play a key role in the formation of
        mineral deposits.
        (Argonne 12/1/00)

        *Perylene, an organic molecule consisting of 20 carbon atoms and 12 hydrogen
        atoms arranged as five benzene-like rings connected to each other in a
        plane, has shown promise as a material for organic versions of field-effect
        transistors (FETs), the standard transistor design in which the
        amplification of electric current is controlled by an external electric
        field. (Physics News Update 11/29/00)

        *In case you didn't see this before: from Nov 22,Tiny glass nanostructures
        revealed in Nature cover story -- potential applications abound. Delving
        into the world of the very, very small, the nano-world, scientists have
        created and "viewed," in three dimensions, materials that may help to solve
        macro-level problems of technology and the environment. (Eurekalert)

        The Edge has some interesting thoughts on the election by, Maryam Mohit,
        Luyen Chou, Marvin Minsky, James J. O'Donnell, Jeremy Bernstein, Freeman
        Dyson, George Dyson, Bernardo Huberman, Jaron Lanier, Danny Hillis. And-
        Goldsmith vs. Zimmerman By George Dyson. And- It's A Much Bigger Thing Than
        It Looks. A Talk with David Deutsch. However useful the theory [of quantum
        computation] as such is today and however spectacular the practical
        applications may be in the distant future, the really important thing is the
        philosophical implications - epistemological and metaphysical - and the
        implications for theoretical physics itself.

        *Today, when most of our assailants are disease-causing microbes, pointy
        weapons like these are obsolete. Or are they? Perhaps we just need to reduce
        the scale and stab our attackers with nano-weapons. Researchers are now
        doing exactly that by designing protein fragments that self-assemble into
        "nanotubes" in the cell membranes of bacteria, poking holes through them
        that let the microbe's insides leak out. (New Scientist article 12/00) Tons
        of NANO here.

        *NANO Book: Travels to the Nanoworld: Miniature Machinery in Nature and
        Michael Gross M. Gross. In Travels to the Nanoworld, Michael Gross takes us
        deep into this miniature universe and describes natural processes and new
        technologies that will make modern machines look like relics from the Stone
        Age. Starting with the model of the living cell, whose vital processes are
        directed and carried out by structures with dimensions on the nanometer
        scale, Gross shows how biochemists are beginning to understand the
        mechanisms of the "nanotechnology of nature." Soon science will have the
        knowledge and technology to generate artificial systems that will perform
        similar tasks, and through them will find new treatments for disease,
        substitutes for toxic waste, and alternatives to carbon fuel. (You can find
        this at www.amazon.com or at www.barnesandnoble.com

        Gina "Nanogirl" Miller
        Nanotechnology Industries
        Personal: http://www.nanogirl.com
        "Nanotechnology: Solutions for the future."
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