10 Microscopic Gadgets For A Better Tomorrow


#2 Tiny Tunes

Tiny Tunes, though the biggest at 0.75 inch in the list that has microscopic gadgets, will surely make iPod Nano look huge. The gadgets have a circuit board the size of a fingernail and a 6-hour lithium polymer battery. It can play music in all the popular audio formats from a microSD card. There are controls for play and pause, moving tracks forward or back, and adjusting the volume. The Kube costs $34.

#3 Nano Laser

Researchers at the University of Texas at Austin have developed the smallest semiconductor laser. It is only 30 nanometers wide (about a millionth part of millimeter), the laser is the right size for integrating onto a computer or communications chip. The laser produces an intense green light by exciting atoms inside a tiny pipe that's filled with indium gallium nitride. Nano-lasers like this can be used to convert electronic signals to optical pulses, speeding up how quickly circuits transfer data.

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