[tt] advanced nanotechnology - 2 new articles
Eugen Leitl
<eugen at leitl.org> on
Tue Sep 11 08:32:41 UTC 2007
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Date: Tue, 11 Sep 2007 03:57:06 -0400
To: eugen <eugen at leitl.org>
Subject: advanced nanotechnology - 2 new articles
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"[2]advanced nanotechnology" - 2 new articles
1. [3]Nanopantography can scale ion beam nanoconstruction billions of
times
2. [4]Tracking increases in global nuclear power plans
3. [5]More Recent Articles
4. [6]Search advanced nanotechnology
[7]Nanopantography can scale ion beam nanoconstruction billions of times
[8]Nanopantography uses microlenses placed on a substrate (the surface
that is being written upon) to divide a single ion beam into billions
of smaller beams, each of which writes a feature on the substrate for
nanotech device production.
A beam of ions is then directed at the substrate. When the wafer is
tilted, the desired pattern is replicated simultaneously in
billions of many closely spaced holes over an area, limited only by
the size of the ion beam.
"The nanostructures that you can form out of that focusing can be
written simultaneously over the whole wafer in predetermined
positions," Economou said. "Without our technique, nanotech devices
can be made with electron-beam writing or with a scanning tunneling
microscope. However, the throughput, or fabrication speed, is
extremely slow and is not suitable for mass production or for
producing nanostructures of any desired shape and material."
With the right ions and gaseous elements, the nanotech fabrication
method can be used to etch a variety of materials and virtually any
shape with nanosize dimensions. A standard printing technique that
can create lenses measuring 100 nanometers wide could be used to
draw features just one nanometer wide if combined with
nanopantography.
"We expect nanopantography to become a viable method for rapid,
large-scale fabrication," Donnelly said.
Economou, Donnelly and Ruchhoeft have been working on the
technology for four years. UH filed the patent application in
December 2006. They hope the technology can become commercially
available in five to 10 years and expect it to become a viable
method for large-scale production.
FURTHER READING
[9]Nanopantography: A New Method for Massively Parallel Nanopatterning
over Large Areas
[10][advancednano?i=raz6sHCV] [11][advancednano?i=9qRwtNk4]
[12][advancednano?i=OUpWqJ3T] [13][advancednano?i=lbVl724h]
[14][advancednano?i=RmL2ej75] [15][advancednano?i=uC9Xuf4a]
[16][advancednano?i=cLa6vgoW] [17][advancednano?i=ZWmfIdRA]
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of times'
[23]Tracking increases in global nuclear power plans
[24]Globally there are more nuclear power plants on order
Date current nuclear Building now Planned Proposed
#plants Power # plants Power # plants Power # plants Power
Aug/07 439 372,002 MWe 34 27,838 81 89,175 223 200,4
45
Jul/07 438 371,258 32 25,073 74 80,531 214 179,3
45
May/07 437 370,040 30 22,398 74 81,601 182 151,3
45
Mar/07 435 368,943 28 22,735 66 70,861 158 124,2
25
Jan/07 435 368,860 28 22,735 64 68,861 158 124,2
25
In 2007
+4 + 3,142 MWe +6 +5,103 +17 20,314 +65 +76,2
20
A 21% increase from February to May/07. 286 reactors versus 219
reactors in the development pipeline. 338 nuclear reactors in the
pipeline as of Aug/2007.
Building/Construction = first concrete for reactor poured, or major
refurbishment under way (* In Canada, 'construction' figure is 2
laid-up Bruce A reactors);
Planned = Approvals, funding or major commitment in place, or
construction well advanced but suspended indefinitely;
Proposed = clear intention or proposal but still without firm
commitment
[25][advancednano?i=Vx80mYzc] [26][advancednano?i=1WKyetQt]
[27][advancednano?i=5INDVUtt] [28][advancednano?i=mJX9r25e]
[29][advancednano?i=MQIjx0uT] [30][advancednano?i=u4KfvROi]
[31][advancednano?i=G8rmLa1K] [32][advancednano?i=JThrtQgL]
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* [42]Variable thrust fuel scooping minimag Orion, external nuclear
pulse propulsion rocket [del.icio.us]
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Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
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