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New study show that silver nanoparticles can cause toxicity in fish

Tested on fathead minnows - an organism often used to test the effects of toxicity on aquatic life - nanosilver suspended in solution proved toxic and even lethal to the minnows. When the nanosilver was allowed to settle, the solution became several times less toxic but still caused malformations in the minnows.

Posted: Mar 2nd, 2010

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New device for ultrafast optical communications

A new device could make it much faster to convert pulses of light into electronic signals and back again. The technology could be applied to ultrafast, high-capacity communications, imaging of the Earth's surface and for encrypting secure messages.

Posted: Mar 1st, 2010

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A simpler way to make micromachines

Microelectromechanical devices gave us the Wii and the digital projector. MIT researchers have found a way to manufacture them by stamping them on plastic, opening up the possibility of coating large areas with tiny sensors.

Posted: Mar 1st, 2010

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