Goethe University chemistry professor Alexander Heckel was working on DNA nanotechnology when he got married, so naturally he made something fitting: the world's smallest wedding rings, made from interlocking loops of DNA molecules!
Prof. Alexander Heckel and his doctoral student Thorsten Schmidt of Goethe University were able to create two rings of DNA only 18 nanometers in size, and to interlock them like two links in a chain. Such a structure is called catenan, a term derived from the Latin word catena (chain). [...]
From a scientific perspective, the structure is a milestone in the field of DNA nanotechnology, since the two rings of the catenan are, as opposed to the majority of the DNA nano-architectures that have already been realized, not fixed formations, but -- depending on the environmental conditions -- freely pivotable. They are therefore suitable as components of molecular machines or of a molecular motor.
Comments (3)
Worlds faintest golf clap.
http://www.elliptigo.com/
There's no way I could ride one with the roads we have in Québec.
http://www.a-bike.co.uk
Still, it's pretty hard to improve on a vehicle that:
-is the most efficient form of land travel (at the equivalent of 500-1000 mpg)
-when set up and tuned properly, achieves about 95-98% efficiency of energy transfer
-costs only a couple days' wages, and is easy to maintain
-extends the life expectancy of the user
Unfortunately, many of the designs sacrifice some of those benefits, in favor of weirdness.
The Schweeb is more like an amusement park ride, and I want a spin on it. But not after "Bruno the Bean-Eating Wonder" just got out of it.
My favs:
www.whike.com
http://www.youtube.com/watch?v=72NI-P1zP1Y
www.steintrikes.com
http://sg.sevenload.com/videos/ohRtxfd-Downhill-auf-dem-Semmering
my bike is beautiful ...
my mail: bettike12125@hotmail.com
write me!!!!!!!!!