Topic: Ecn-057 Solved: Nanodragster

[Ecnelis]

And now for something completely different… For 1 point.

What? Who? Where? Why? Oh, my...

[Arunas]

  

[Ecnelis]

Experts?

[streamliner]

Nanocar by James Tour and coworkers at Rice University synthesized a molecular car with four carbon-based wheels that roll on axles made from linked carbon atoms. The nano-car's molecular wheels are 5,000 times smaller than a human cell. A powerful technique that allows viewing objects at the atomic level called scanning tunneling microscopy reveals the wheels roll perpendicular to the axles, rather than sliding about like a car on ice as the car moves back and forth on a surface.

Molecule-sized cars complete with buckyball tires may bring new meaning to the term "compact car" thanks to chemistry professor James Tour, who has been awarded the 2008 Feynman Prize for his synthesis of the nanocar.

The honor, which recognizes researchers who make significant contributions to the beneficial use of nanotechnology, is distributed by the California think tank Foresight Institute. The award was named after the late physicist Richard P. Feynman, who stressed that an atomic-level understanding of biology and chemistry would be crucial for further developments in the field.

[Ecnelis]

That's it! But it has also other name than "nanocar". Do you know what it is?

[streamliner]

"The Nanodragster" is 50,000 times thinner than a human hair and has a top speed of 0.014 millimeters per hour (0.0006 in/h).[2][7][8] The rear wheels are spherical fullerene molecules, or buckyballs, composed of sixty carbon atoms each, which are attracted to a dragstrip that is made up of a very fine layer of gold. This design also enabled Tour’s team to operate the device at lower temperatures.

The nanodragster and other nano-machines are designed for use in transporting items. The technology can be used in manufacturing computer circuits and electronic components, or in conjunction with pharmaceuticals inside the human body.[9] Tour also speculated that the knowledge gained from the nanocar research would help build efficient catalytic systems in the future.

[Ecnelis]

Good job!

[streamliner]

Actually, for accuracy, Wikipedia got this one wrong.  Here's a better description of the wheels:

Spherical molecules called buckyballs made of 60 carbon atoms each serve as the big rear wheels. Due to chemical attractions, these wheels nicely grip the "dragstrip," which is made of a superfine layer of gold rather than pavement. For the front wheels, the scientists opted for a less sticky compound called p-carborane.

Tour's group built nanocars before with buckyballs as all four wheels, but these autos hug the road too tightly and require temperatures around 400 degrees Fahrenheit to get rolling. Nanocars with all p-carbonane wheels, on the other hand, slip and slide as if on ice, said Tours, making them difficult to image and study.