Laser Powered Paper Plane Takes Flight

RobertTaylor writes: "Ananova is reporting that Japanese scientists have developed a laser powered paper plane. A blast of light from a commercial laser heats up a droplet of acrylic polymer or water on its surface which acts as fuel. Full story here" Nature also has a story on this advance.

Comments

Something else like this.

[Galahad2]

I remember a while back reading about a laser powered metal disk that was going to possibly be an alternative to space travel. A laser on the ground would shoot at the center of the craft, which (being a mirror on the bottom) would reflect the light to the sides. The air would get so hot that it would "ignite" and force the craft up a few inches. The great thing about this is that the energy to get into orbit doesn't need to be carried by the craft, rather simply kept on land.

Here's a link to an article about it.

Fuel... A nit to pick

[Embedded Geek]

...heats up a droplet of acrylic polymer or water on its surface which acts as fuel...

Actually, it's be reaction mass, not fuel. The water/polymer itself isn't releasing energy to propel the plane. The laser provides the energy to power a state change (liquid to gas) which pushes the sucker along.

I think the "fuel" (liquid cessium??) in an ion engine is the same way, providing reaction mass while the real energy is from the electrical source.

Lightcrafts are old

[BerntB]

I don't get it.

Why isn't Lightcraft Technologies discussed here?

Look in Google groups after e.g. 'Leik Myrabo' or 'lightcraft'.

It seems they never got enough money to get off the ground. :-(