Ultra-Thin Solar Cells of the Day

Austrian and Japanese scientists have unveiled a solar cell device thinner than a typical thread of spider silk, measuring only 1.9 micrometers.

The new device, made up of electrodes on plastic foil, is 1/10th the thickness of the previous thinnest solar cells, and it's flexible enough to wrap around a human hair.

Researchers say the ultra-thinness and elasticity of device make it useful for attaching to clothes