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Archive for December, 2008

Toward atomic-scale computing with nanotechnology

Posted by Jim Lewis on December 31st, 2008

Christian Joachim (who shared the Foresight Nanotech Institute Feynman Prize in the Experimental category in 1997 and won in the Theoretical category in 2005) is heading a group of researchers working to bring about atomic-scale computing. ScienceDaily led us to this European Commission ICT Results feature “Computing in a molecule“, which describes their on-going efforts: [...]

Nanotechnology makes teeth too slippery for harmful bacteria

Posted by Jim Lewis on December 30th, 2008

Polishing teeth with silica nanoparticles produces much smoother surfaces than does polishing with larger silica particles, making it easier to remove harmful bacteria.

Why the DMS debate is a good thing for nanotech

Posted by J. Storrs Hall on December 29th, 2008

One of the main reasons that we are confident in the overall predictions of molecular manufacturing is that there are many pathways to it from current technology and using currently understood science. It is thus something of a milestone that we have arrived at a fork in the road about which there is room for [...]

Tell NIST how nanotechnology could address a critical national and societal need

Posted by Jim Lewis on December 29th, 2008

If you have a proposal on how nanotech could address a critical national and societal need, the National Institute of Standards and Technology (NIST) wants to hear from you.

Nanotechnology-produced wires to swim through blood, attach to, and kill cancer cells

Posted by Jim Lewis on December 26th, 2008

Nanowerk News reports that an international nanotech collaboration of American and Korean scientists, funded by the Korean government, has developed multifunctional gold-coated nanowires that are designed to swim through the blood stream and attach to cancerous cells via antibodies against the cancer cells. Exposure to an electromagnetic field should heat the nanowires and destroy the [...]

Reading DNA sequences from single molecules of polymerase using nanotechnology

Posted by Jim Lewis on December 24th, 2008

A new nanotech method of DNA sequencing is 30,000 times faster than current DNA sequencing methods.

The weather machine

Posted by J. Storrs Hall on December 23rd, 2008

The following is an edited and revised version of the talk I gave at the Global Catastrophic Risks conference that was held in conjunction with Convergence 08 (and which I reprised for Convergence). I’m posting it here because it seems to me that this is exactly the kind of thing Foresight was founded for: to [...]

Transparent electronic displays and "e-paper" through nanotechnology

Posted by Jim Lewis on December 23rd, 2008

A method of depositing dense arrays of highly aligned carbon nanotubes on either rigid or flexible substrates promises transparent nanotech transistors for a variety of electronic applications.

Graphitic memory

Posted by J. Storrs Hall on December 22nd, 2008

A recent paper from Feynman Prize winner James Tour’s group at Rice relates an interesting new form of memory based on a bistable 2-terminal graphitic switch. Once developed, the switch could form the basis of a high-density non-volatile storage which might replace flash devices (which are already beginning to replace magnetic disks). Rice press release

Nanotechnology maps gene expression in brain

Posted by Jim Lewis on December 22nd, 2008

The Allen Institute for Brain Science is using nanotech methods to map in which cells in the brain which genes are expressed.

Nanotechnology could introduce flaws into carbon nanotubes to build circuits

Posted by Jim Lewis on December 19th, 2008

Computational nanotech studies have shown that deliberate introduction of structural defects at specific sites in carbon nanotubes can guide electrons along specific paths, providing a way to fabricate complex electronic circuits from nanotubes.

Targeting highly metastatic melanomas with nanotechnology

Posted by Jim Lewis on December 18th, 2008

Using a promising nanotech approach to deliver the RNA molecules, a type of nanoparticle described as a neutral liposome was administered to mice bearing melanoma tumors and found to cause a significant decrease in tumor growth and in the number of metastatic tumor colonies.

Tracking single molecules in living cells using nanotechnology

Posted by Jim Lewis on December 17th, 2008

Previously unknown spectral properties of carbon nanotubes functionalized with DNA have been exploited to create nanotech sensors that can simultaneously detect several different substances, in real time, within living cells, to single molecule sensitivity.

Study of the FDA’s ability to regulate nanotechnology-based dietary supplements to be released

Posted by Jim Lewis on December 16th, 2008

How well prepared is the FDA to regulate nanotech products? Perhaps not very well, at least in the area of dietary supplements.

Tunneling electrons could power nanotechnology

Posted by Jim Lewis on December 15th, 2008

Molecular dynamics simulations show that electron tunneling through nanoscale rotary motors based on carbon nanotube shafts may enable nanotech motors to rotate more than a million times faster than their biological counterparts.

Nanotechnology advance toward individualized cancer treatments

Posted by Jim Lewis on December 11th, 2008

The effectiveness of treatment with multifunctional nanoparticles was studied using human breast tumors grown in rats lacking an immune system so that the variation in the effectiveness of treatment could be compared among individual breast tumors.

NanoPhobia … Phobia

Posted by J. Storrs Hall on December 10th, 2008

In an interesting coincidence and counterpoint to Jim’s Nanophobia post this morning, I ran across the following on Nature News: Fearing the fear of nanotechnology. It is, surprisingly perhaps, by our old friend Richard Jones. The thrust of the article is that a study in Nature Nanotechnology seems to show that the public’s reaction to [...]

Uncertainty over safety of nanotechnology in consumer products

Posted by Jim Lewis on December 10th, 2008

It is not clear that there is any real danger from the nanotech products currently in use, but neither is there convincing proof that all are safe.

Foresight — with Peripheral Vision: Nanotech & AI forecast from Josh Hall

Posted by Christine Peterson on December 9th, 2008

Josh Hall, author of Nanofuture: What’s Next for Nanotechnology, sends this message to Nanodot readers: Dear Foresight members & friends, It’s the time of year when many of you are renewing your Foresight memberships, and helping us meet our $30,000 goal for our Challenge Grant by December 31: http://www.foresight.org/challenge I believe that the next decade [...]

A better raincoat through nanotechnology

Posted by Jim Lewis on December 9th, 2008

A nanotech technique that can coat any number of common fabrics with a layer of silicone nanofilaments appears ready to produce durable, completely waterproof clothing.