RNA nanostructures chemically modified to be resistant to degradation retain 3D structure and biological activity.
Hogg and Freitas provide a theoretical analysis of the power constraints when nanorobots rely entirely on ambient bloodstream oxygen and glucose and identify aspects of nanorobot design that significantly affect available power.
Futurisms - Critiquing the project to reengineer humanity: Happy Birthday, Nanotechnology?. Adam Keiper over at the New Atlantis reminds us it's the 50th anniversary of Feynman's Plenty of Room at [...]
Nanopolis writes "Imagine what would happen if you could introduce your break-through technology to thousands of viewers comprised of venture capitalists, banks, investors, brokerage firms, industrial and research players?
Find out by participating in the collaborative Nanopolis encyclopedias. The exclusive multimedia "Exploring Nanotechnology" encyclopedia CD-ROM will be launched within 30 days !
Roland Piquepaille writes "Laser lights can be used for optical sensing applications, for example to identify unknown gases emitted by an engine. And as these unknown substances react differently to different wavelengths, researchers at the University of Wisconsin at Madison have developed unique wavelength-agile lasers. And I'm amazed by the beauty and the simplicity of their idea. They're using white lasers which produce all colors simultaneously -- but with a twist. The white laser light goes through a 20-kilometers long optical fiber before reaching its target. And because different colors 'travel' at different speeds, this produces independent results for the different wavelengths. The researchers are using spectral resolutions smaller than a thousandth of a nanometer and they are able to get all the results within a millionth of a second. This method could be used to design cleaner engines or data storage applications in a few years. Read more for other details, pictures and references."
Just a reminder that the NSTI Nanotechnology Conference and Trade Show is coming up May 8-12, 2005 at the Anaheim Marriott & Convention Center in Anaheim, California. From the looks of the confirmed speaker list many people who have been mentioned on Nanodot or who have spoken at previous Foresight Insitute Conferences will be there.
Also worth noting is that the super early registration period for the Foresight Institute's 13th annual conference which will be in San Francisco October 22-27th, 2005 ends June 1st. The first two days are essentially what was previously known as the "Senior Associates" conference. The last four days are about busines, policy and R&D progress. This is explained in greater detail in the conference brochure here.
Roland Piquepaille writes "Today, anticancer drugs are delivered to patients in such a way that they can destroy both infected and healthy cells. But now, researchers at the Institute of Bioengineering and Nanotechnology (IBN), in Singapore, have designed 'smart' nanocarriers which deliver the drugs exactly where they are needed, reducing side effects and suppressing cancer growth. Their core-shell nanoparticles are both sensitive to temperature -- which has been done before -- and to acidic levels. When these nanocarriers encounter acidic environments such as tumor tissues, they break apart and release the molecules they contain. So far, this technology has only been tested on mice, but the researchers have filed an application patent in the U.S., so expect to see practical applications in a few years. Read more for other details and references. [Additional note for purists: these nanocarriers are "smaller than 200 nm," which doesn't guarantee they fit within the strict definition of nanotechnology. However, if the Advanced Materials journal thinks these are nanoparticles, who am I to argue?]"
Science Daily is documenting that Zhiyu Hu and associates, researchers at ORNL has developed a method for binding platinum nanoparticles to glass wool fibers that will enable a nano-catalytic reaction (aren't *all* catalytic reactions "nano-" by definition?) to allow self-combustion of methanol at temperatures ranging from room temperature to 600 deg. C.