[tt] advanced nanotechnology - 5 new articles
Eugen Leitl
<eugen at leitl.org> on
Wed Oct 10 11:37:45 UTC 2007
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Subject: advanced nanotechnology - 5 new articles
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"[2]advanced nanotechnology" - 5 new articles
1. [3]2007 Feynman prize winners
2. [4]Eric Drexler on the Productive Nanosystems TechnologyRoadmap
3. [5]Productive Nanosystem Zyvex talk
4. [6]Productive Nanosystems conference first two talks
5. [7]The 2010 Blimp plane
6. [8]More Recent Articles
7. [9]Search advanced nanotechnology
[10]2007 Feynman prize winners
[11]The Foresight Nanotech Institute awards prizes each year for
people who've made noteworthy contributions to molecular
manufacturing.
The student prize went to Fung Suong Ou, for "Devices and Machines
on a Single Nanowire." He used a combinatorial approach to
fabricate one-dimensional structures composed of carbon nanotubes
and metal nanowires.
The communication prize was earned by [12]Robert Freitas for his
decade-plus of work telling people about the benefits of medical
applications of molecular manufacturing. His highly detailed and
informative Nanomedicine books are available in full online, as
well as Kinematic Self-Replicating Machines.
The Feynman theory prize was won by [13]David A. Leigh, for
artificial molecular motor and machine design in the realm of
Brownian motion.
The Feynman experimental prize went to [14]Sir J. Fraser Stoddart,
for synthesizing molecular machines including a molecular "muscle."
FURTHER READING
[15]Paper by Fraser Stoddart, Evaluation of synthetic linear
motor-molecule actuation energetics
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[29]Eric Drexler on the Productive Nanosystems TechnologyRoadmap
[30]Drexler is the one who started the idea of molecular manufacturing
back in the mid-1980's. The general focus of the Roadmap is on
atomically precise technologies, not productive nanosystems.
It provides merit criteria and metrics for research today. When
selecting between proposals, look for atomic precision. Look for
size, range of materials, other criteria that we'll probably hear
about later in the talk.
The Roadmap looks toward advanced manufacturing (what physics says
should be possible), but focuses on accessible productive
nanosystems (such as ribosome-like systems).
Near-term, there are several kinds of atomically precise things we
can build. One is biopolymers: protein, DNA.
New topic: Advances in production technology. Type 1 advances build
better products. In Type 2, the products include improvements to
the production system, which can enable further improvements. So we
really want better productive machines that can build better
productive machines... This appears to be an argument for using
nanosystems as the means of production of nanosystems.
Today, tools build tools build tools... traceable back to
blacksmithing. The tool that extruded your breakfast bagel is a
leaf on this tree. The advanced APM tree has a "Mark II Ribosome"
low on the trunk, and "Macroscale APM" high on the trunk, with
"Dollar-per-kilogram fab" among the leaves. People tend to assume
that things high in the tree are proposals for next year, "which
would be absurd."
The Roadmap talks about cross-linked organic structures. An idea
that arose pretty late is mixed covalent-ionic bonding. Titanium
dioxide, quartz. This may be closer than what's been looked at more
closely.
The role of roadmapping: Developing the knowledge and confidence
necessary for coordinated system development. So the Productive
Nanosystems roadmap should show what's necessary, when, how to
coordinate and schedule developments. Avoid chicken-and-egg
problems that lead to slow incremental progress.
DNA currently costs dollars per milligram. There's no point in
thinking about kilogram-scale structures... but there's a
researcher who has an idea for making DNA at dollars per
kilogram... but why should he do it when there's no market for
kilograms of DNA? This is a real example: it seems that DNA might
actually get vastly cheaper.
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TechnologyRoadmap'
[44]Productive Nanosystem Zyvex talk
Chris Phoenix, CRN, is live blogging the event. [45]John Randall,
Zyvex: A completely different approach. Zyvex was founded to create
atomically precise manufacturing on the way to productive nanosystems.
In other words, building precise structures using big machines rather
than nanoscale tools.
Atomic layer deposition builds amorphous materials; atomic layer
epitaxy (ALE) builds crystalline materials. Start with a protected
(passivated) surface: every available bond has a hydrogen atom. If
you deprotect the surface, removing the hydrogen, then you can
deposit a layer of atoms. If you choose the right precursor gas,
you add only one monolayer which is protected as it's added. Then
you can deprotect and add exactly one more layer of atoms. There
are a number of precursor gases available. There are literally
hundreds of systems to grow things with atomic precision in one
dimension.
if you combine this with the ability to deprotect the surface in
selected locations... With a scanning tunneling microscope, you can
remove single hydrogen atoms with atomic precision. Several groups
have demonstrated this. This is "the limit of a thin resist" - a
monolayer of hydrogen.
Differences from mechanosynthesis:
1) Building blocks don't have to be captured by the tool tip.
2) The tool tip can be used to inspect both deprotection and
assembly.
3) You can do large areas (fast) or atomic resolution, depending on
mode.
4) This is a very general technique.
5) All you need is an atomic-resolution STM tip - don't need
anything else with atomic resolution.
You need an atomically precise, invariant tip. ALIS has built such
a tip. A reproducible atomic structure at the end of a tungsten
wire.
They're trying to develop a dual-material process, silicon and
germanium, so that you can make releasable structures. (They think
they can deal with lattice mismatch.)
One possible product is a nano-imprint template. They expect
atomically precise tools to be the most valuable product. They
expect to enable productive nanosystem factories.
Question: Hydrogen migrates at normal temperatures. Is that
compatible with the deposition technologies? A: We believe (after
careful study) that the hydrogen is stable on a silicon surface, up
to 200-300 degrees C. We think we can get epitaxy to work in that
window. Cryogenic temperatures are not necessary. You do get motion
on a single dimer, but no long-range motion.
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[59]Productive Nanosystems conference first two talks
The Foresight Productive Nanosystems conference has started.
Chris Phoenix at the Center for Responsible Nanotechnology is
liveblogging the event.
[60]Here is his introductory article about the conference
[61]The first speaker is Alex Kawczak, VP, Nanotechnology &
BioProducts, Battelle, who talks about some aspects of the
[62]Technology Roadmap for Productive Nanosystems
There are several Atomically Precise things in the Roadmap:
Manufacturing, Atomically Precise Productive Nanosystems (APPN),
Atomically Precise Technologies. Now he's talking about the
nanotech market as a whole ($1 trillion by 2015), most of which is
not atomically precise. He says atomic precision can improve
nanotech.
Atomically Precise Structures are a definite arrangement of atoms.
Self-assembled DNA, engineered proteins, nanotube segments, etc.
But atomically precise technology will increase scale and
complexity.
Atomically Precise Manufacturing (APM) lets you build atomically
precise structures under programmable control.
Atomically Precise Productive Nanosystems are functional
nanosystems that implement APM. This is nano-building-nano - the
high-impact stuff.
So this sounds like the roadmap defines a spectrum of AP
technologies, working from self-assembly of engineered AP
structures, up to nano building nano.
Two strategies in the roadmap: 1) Develop AP technologies for
energy; 2) Develop AP technologies for medicine. Hm, no emphasis on
productive nanosystems in that slide.
They're hoping that the Roadmap will help a broad range of
industries to develop nano capabilities. They want to develop a
broad technology base for APT, apply this to develop APM, APPNs,
and spinoff APT applications. They want to "treat atomic precision
as an essential criterion for research." So the roadmap encompasses
self-assembly as well as APPN.
The roadmap recommends hybrid manufacturing technology approaches
at several points.
So it sounds like the Roadmap does talk, at least some, about
molecular manufacturing, which they call APPN. This could be a very
interesting conference. And it looks like the Roadmap does
explicitly endorse molecular manufacturing.
Post-talk comment from Jim Von Ehr (today's moderator): Comparison
to semiconductor roadmap: That was developed after they'd been
going for a while. Our roadmap is developed in advance, so it's a
bit speculative; you'll be amazed at how many different things were
pulled together.
[63]Chris Schafmeister talked about Productive Nanosystems: Abiotic
Biomimetic Roadmap
Productive nanosystem definition: "A closed loop of nanoscale
components that make nanoscale components."
Schafmeister has built 14 building blocks - some of them, they can
make tens of grams at a time. They've built one with a functional
group and they're working on other functional groups - some not
found in natural amino acids.
They attach a building block to a plastic bead, then add other
building blocks one at a time. This is not self-assembly: it is
programmed assembly. They want to build molecules containing 20-50
blocks. That's a lot of reaction steps! Once they've built a chain,
they double-link it, making it rigid. They've synthesized over 100
molecules; most are very water-soluble; the most building blocks so
far is 18.
He wants to "create many artificial catalysts that approach the
capabilities of enzymes." No one has made an enzyme yet - he wants
to make thousands of them, engineered. He wants to make 60,000
enzymes as rapidly as he can write 60,000 lines of code. This may
be achievable because enzymes carry out catalysis (accelerating
chemical reactions) by changing the mechanism of the reaction. It
does this via functional groups arrayed around the substrate. "If
we can position multiple functional groups in three-dimensional
space in all the right places," then we may be able to implement
enzymes. So if functional groups (found in databases) were
positioned in space correctly, you'd have the enzyme
How long do the chemical operations take? A: Seconds, maybe minutes.
Not hours. Right now, we do one per hour (10^17 molecular copies).
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[77]The 2010 Blimp plane
[78]Hat Tip to Al Fin, for spotting a very interesting blimp plane
hybrid
blimp plane
The Luxury [79]blimp plane hybrid, Aeroscraft ML866
While 70% of the aerodynamic lift comes from helium, the remaining
30% is derived from its innovative "wing" shape. As well as being
able to hover the aircraft will be capable of speeds up to 138 mph
(0-222 kmh) and will operate at altitudes of up to 12,000 ft (3,657
m). and the massive 210 ft (64 m) long by 118 ft (36 m) wide by 56
ft (17 m) high structure will deliver a roomy 5000+ square feet of
cabin space.
Aeros displayed a 1/48th scale model at this year's NBAA show and
hopes to begin airframe static testing of the rigid composite
structure within months, with flight testing at the San Bernadino
International Airport to follow as early as 2010. An additional
series of commercially focussed Aeroscraft is also on the drawing
board and will be scaled to payloads of up to 60 tons.
No exact pricing details are available as yet but reports suggest
the tag will be under $40 million.
blimp plane executive floor plan
Blimp plane executive floor plan
blimp plane commercial floor plan
blimp plane commercial floor plan
blimp 60 ton payload cargo plane
60 ton payload blimp cargo plane
blimp plane bouyancy control
Blimp plane bouyancy control
blimp plane strong lightweight structure
blimp plane strong lightweight structure
FURTHER READING
[80]Aeros is a world leading lighter-than-air, FAA-certified aircraft
manufacturing company.
UPDATE:
I looked more closely at the site and they have some interesting
innovations. A composite structure for more strength and less weight
and an interesting device for dynamic control of bouyancy.
It seems later versions of this type of craft would be helped by
[81]wing in ground effect lift.
1. Even lighter and stronger materials. Carbon nanotubes etc..
2. cheap thin film solar for power systems
3. The wing lift capability seems like it could be designed to take
advantage of [82]wing in ground effect lift.
[300px-Pic_4459.jpg]
The Russian Ekranoplane, WIG plane, could lift over 100 tons of cargo
WIG plane/boats need to be big to get the most efficiency. Height off
the ground to still get the extra left is determined by the size of
the wing. Since this is also large it seems like it is well suited.
[pelican01.jpg]
Boeing Pelican, WIG concept. Boeing's claimed that the Pelican would
be capable of transporting 750 tons over 10,000 nm (18,530 km) when
cruising in ground effect, but can carry the same load only 6,500 nm
(12,045 km) when out of ground effect. The Pelican, the 500 ft (153 m)
span vehicle would carry up to 2,800,000 lb (1,270,060 kg) of cargo
while cruising as low as 20 ft (6 m) over water or up to 20,000 ft
(6,100 m) over land. Unlike the Soviet concepts, the Pelican would not
operate from water, but from conventional runways using a series of 76
wheels as landing gear.
Although the really big WIG vehicles designed to haul 5,000 tons would
probably then swamp the blimp lifting effect. But vehicles with
60-2000 tons of lift seem like they would benefit from taking
advantage of blimp lift, wing and wing in ground effect.
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79. http://www.gizmag.com/go/8132/
80. http://www.aerosml.com/main.htm
81. http://en.wikipedia.org/wiki/Wing-In-Ground_effect_vehicle
82. http://www.se-technology.com/wig/html/main.php?open=commercial&code=0
83. http://feeds.feedburner.com/~f/blogspot/advancednano?a=PlbB4YFS
84. http://feeds.feedburner.com/~f/blogspot/advancednano?a=8hnaztA2
85. http://feeds.feedburner.com/~f/blogspot/advancednano?a=zu2biyjp
86. http://feeds.feedburner.com/~f/blogspot/advancednano?a=PWjogcmt
87. http://feeds.feedburner.com/~f/blogspot/advancednano?a=Vg2H8OV0
88. http://feeds.feedburner.com/~f/blogspot/advancednano?a=gabqYRou
89. http://feeds.feedburner.com/~f/blogspot/advancednano?a=n6CA4jUW
90. http://feeds.feedburner.com/~f/blogspot/advancednano?a=jAHSSNWg
91. http://www.feedblitz.com/f/f.fbz?Fwd2FriendEdit=64651;786679;http://feeds.feedburner.com/~r/blogspot/advancednano/~3/167504692/2010-blimp-plane.html;The%202010%20Blimp%20plane;93232
92. http://www.feedblitz.com/f/f.fbz?Search=64651;786679;future,gadgets,airplanes;The%202010%20Blimp%20plane;93232
93. http://www.feedblitz.com/related.asp?http://feeds.feedburner.com/~r/blogspot/advancednano/~3/167504692/2010-blimp-plane.html
94. http://www.talkr.com/app/text_to_audio.app?feed_url=http%3a%2f%2ffeeds.feedburner.com%2fblogspot%2fadvancednano&permalink=http%3a%2f%2ffeeds.feedburner.com%2f~r%2fblogspot%2fadvancednano%2f~3%2f167504692%2f2010-blimp-plane.html&src=5
95. LYNXIMGMAP:file://localhost/tmp/mutt.html#outbrainMap_64651_4
96. http://feeds.feedburner.com/~r/blogspot/advancednano/~3/167154619/billion-millionaires-in-2025-not-likely.html
97. http://feeds.feedburner.com/~r/blogspot/advancednano/~3/167126277/synthetic-vascular-system-progess.html
98. http://feeds.feedburner.com/~r/blogspot/advancednano/~3/167119568/petaflop-plans-progress.html
99. http://feeds.feedburner.com/~r/blogspot/advancednano/~3/167066515/ntt-docomos-super-3g-and-4g-plans.html
100. http://feeds.feedburner.com/~r/blogspot/advancednano/~3/167050297/transcipt-of-my-talk-economics-in-new.html
101. http://tagline.feedblitz.com/nfc?affid=10059&sender=cf515ead64587146fb6815a2a013d226,feedblitz.com&rcpt=8da0e5c5ebdabb2bd85a8a5d3a603a7c,leitl.org&ranstr=45039de8-7720-11dc-b0c9-003005ce&group=64651
102. http://www.feedblitz.com/f/f.fbz?EmailRemove=_Mjk4NzI1M3w2NDY1MXxldWdlbkBsZWl0bC5vcmd8OTMyMzI=_
103. http://www.feedblitz.com/f/f.fbz?Subscriptions=64651
104. http://www.feedblitz.com/f
105. http://www.feedblitz.com/f/f.fbz?EmailRemove=_Mjk4NzI1M3x8ZXVnZW5AbGVpdGwub3JnfDkzMjMy_
106. http://www.feedblitz.com/
107. http://www.feedblitz.com/
----- End forwarded message -----
--
Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
______________________________________________________________
ICBM: 48.07100, 11.36820 http://www.ativel.com http://postbiota.org
8B29F6BE: 099D 78BA 2FD3 B014 B08A 7779 75B0 2443 8B29 F6BE
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