Loading ...
Sorry, an error occurred while loading the content.

Re: [nanotech] ~Nanogirl News~

Expand Messages
    Gina,quick note to let you know that your Nanogirl News is well appreciated , concise and always timely . just so you know! paul
    Message 1 of 46 , Sep 30, 2000
      Gina,quick note to let you know that your 'Nanogirl News' is well
      appreciated , concise and always timely . just so you know! paul
    • 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
        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."
      Your message has been successfully submitted and would be delivered to recipients shortly.