[CrackMonkey] I was gonna' post about Carnivore brand net-filter, but here's some
thing completely different: nano-poly-plotter (molecular "lithography"/"xerography")
George J.P. Perry
geoperry at iww.org
Wed Jul 12 17:07:23 PDT 2000
---------- Forwarded message ----------
Date: Wed, 12 Jul 2000 15:21:02 -0700
From: American Patriot Friends Network <apfn at apfn.org>
To: American Patriot Friends Network <apfn at apfn.org>
Subject: (Q) IS THIS TOP SECRET? - (A) NO! NOBODY UNDERSTANDS IT!
(Q) IS THIS TOP SECRET? - (A) NO! NOBODY UNDERSTANDS IT!
THIS MESSAGE WAS POSTED AT:
http://byamerican.com/cgi-bin/ast/config.cgi?read=18399
POSTED BY: Dr. Ken Kubos - kk at msn.com
Date: Monday, 19 June 2000, at 8:58 a.m.
: Source: Northwestern University ( http://www.nwu.edu /)
: Date: Posted 6/16/2000
: Northwestern Chemist Develops Nanoplotter With Parallel Writing Capabilities
: EVANSTON, Ill. -- In a paper to be published in the June 9 issue of the
: journal Science, researchers at Northwestern University demonstrate an
: eight-pen nanoplotter capable of simultaneously creating eight identical
: patterns drawn with tiny lines of molecular ink. Each line is only 30
: molecules wide and one molecule high. This breakthrough transforms dip-pen
: nanolithography (Science, Oct. 15, 1999) from a serial process into a
: parallel process, paving the way to making it competitive with other
: optical and stamping lithographic methods used for patterning large areas
: on metal and semiconductor substrates, including silicon wafers.
: "Our multiple-pen, parallel process nanoplotter gives the
: nanotechnologist a powerful new tool," said Chad Mirkin, George B.
: Rathmann Professor of Chemistry. "The miniaturization of the plotter
: writing technique opens up exciting avenues of doing things differently,
: better and on a much smaller scale than they are today."
: Mirkin and fellow author Seunghun Hong, a postdoctoral researcher at
: Northwestern, report that the nanoplotter could be equipped with a
: significantly greater number of pens than a mere eight. The technology
: should be able to support hundreds, or even a thousand, of tiny nanopens
: working together at the same time to miniaturize electronic circuits,
: pattern precise arrays of organic and biomolecules such as DNA and put
: thousands of different medical sensors on an area much tinier than the
: head of a pin.
: A major limitation of other scanning probe lithography (SPL) methods is that
: contact between the tip and the substrate (the writing surface) changes
: the line width and quality of each patterned structure. Therefore, each
: tip requires a separate feedback system in order to control each line,
: which means a large amount of expensive and complex instrumentation.
: Mirkin's parallel nanoplotter, however, produces consistent line widths with
: multiple pens and requires only one feedback system for the entire device.
: The reason for this lies in a tiny drop of water.
: In dip-pen nanolithography (DPN), "inks" of organic molecules are
: applied to an atomic force microscope (AFM), which serves as the writing
: tool. The molecular ink then is deposited onto an underlying substrate, or
: "paper," via a tiny capillary in the water droplet that forms
: naturally at the tip. DPN is a nano-version of the 4,000-year-old quill
: pen.
: When taking the DPN plotter to a parallel process, Mirkin's team made an
: important scientific discovery. When the writing tips were applied to the
: substrate using different contact forces, the pens still produced
: identical dots and lines, with respect to diameter and line width. In
: other words, with increased pressure, only the water at the AFM tip
: spreads out, but the width of the nanocapillary, through which the ink
: flows, remains constant.
: This discovery means that only one pen of the multi-pen device needs to be
: "smart" or have its tip equipped with a feedback system. This
: pen is called the imaging tip and is used for both imaging and writing. As
: it patterns an area, sensors in the imaging tip communicate with the
: customized computer software that drives the nanoplotter. In the case of
: the eight-pen nanoplotter, the other seven writing tips are passive and
: follow the lead of the pen with the imaging tip, drawing identical
: patterns a fixed distance apart.
: Mirkin and Hong demonstrated the nanoplotter's parallel writing capability by
: first drawing two squares using the same ink, then two squares made of two
: different inks, and finally drawing eight identical patterns -- a set of a
: dot, a line, an octagon and a square -- made using the same ink. In each
: demonstration, the patterns were perfectly aligned with respect to each
: other.
: The nanoplotter also can be used in a serial fashion to create nanostructures
: made up of different inks, one ink being added after another to build the
: final structure.
: In addition to requiring only one feedback system, Mirkin's nanoplotter has
: other advantages. It can be automated, it uses a relatively inexpensive
: tool (an atomic force microscope) that is common in the laboratories of
: companies and universities, and it works under normal atmospheric
: conditions as opposed to a billion-dollar semiconductor fab line.
: "Ideally, we want to have total control over the chemical composition,
: or architecture, of the nanostructures we build down to the sub-10
: nanometer regime," said Mirkin, also director of Northwestern's
: Institute for Nanotechnology and Center for Nanofabrication and Molecular
: Self-Assembly. "It's a level of refinement that will open the doors
: to remarkable scientific discovery and the realization of exciting new
: technologies. The parallel process nanoplotter takes us closer to our
: goal."
: Mirkin's next step is to expand the current nanoplotter's capabilities. He
: hopes to have a working 50-pen nanoplotter by the end of next year.
: "It soon will be possible to pattern one master plate with thousands of
: different organic nanostructures, each structure designed to react with a
: certain disease agent, for example," said Mirkin. "That's what
: is exciting about this -- no other method exists to do this on such a
: small scale."
: In the case of biomolecules like DNA, it will be possible to generate
: ultrahigh density combinatorial arrays that could be quite useful in the
: genomics and medical diagnostics industries. Such arrays are currently
: generated via techniques with much lower resolution than DPN.
: The research was funded by the U.S. Air Force Office of Scientific Research,
: the Defense Advanced Projects Research Agency and the National Science
: Foundation-funded Northwestern University Materials Research Center.
==============================================================================
Molecular Electronics Will Change Everything --- Nanopores, Thiophene Ethynylene.
Posted By: Dr. Ken Kubos - kk at msn.com Date: Tuesday, 11 July 2000, at 8:24 a.m.
http://byamerican.com/cgi-bin/ast/config.cgi?read=18590
: In the case of biomolecules like DNA, it will be possible to generate
: ultrahigh density combinatorial arrays that could be quite useful in the
: genomics and medical diagnostics industries. Such arrays are currently
: generated via techniques with much lower resolution than DPN.
THE WORLD WILL NEVER BE THE SAME!
The great genome quest:
http://www.apfn.org/apfn/beginning.htm
NOW MY DNA GUN IS POSSIBLE: INVESTORS WANTED!
EMAIL: APFN at apfn.org - http://www.apfn.org
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"WE ARE APT TO SHUT OUR EYES AGAINST A PAINFUL TRUTH...
FOR MY PART, I AM WILLING TO KNOW THE WHOLE TRUTH;
TO KNOW THE WORST; AND TO PROVIDE FOR IT."
------ Patrick Henry
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