via MSNBC

As if the blueprint for life wasn’t busy enough, nanotech researchers are putting DNA to work in tiny mechanical devices and as templates for electronic circuits.

Recent DNA constructions include microscopic patterns, tiny gears and a molecular assembly line. Although still mostly at the demonstration level, DNA nanotech is a rapidly growing field.

…”DNA structures are programmable by sequence, and so are their intermolecular interactions,” Seeman says. “That makes them unique.”

Whereas nature alone dictates how most molecules interact, DNA comes with a built-in code that researchers can re-formulate to control which DNA molecules bond with each other. The goal of this DNA tinkering is microscopic factories that can produce made-to-order molecules, as well as electronic components 10 times smaller than current limits.

“Nanofabrication is where we are going,” Seeman told LiveScience. “It will happen soon.”

via BBC

An “emotionally aware” computer system designed to read people’s minds by analysing expressions will be featured at a major London exhibition.

…The computer, which is connected to a camera, locates and tracks 24 facial “feature points” such as the edge of the nose, the eyebrows and the corners of the mouth.

A total of 20 key facial movements - including a nod or shake of the head, a raise of the eyebrow or a pull on the corner of the mouth - have been identified.

Combinations of these movements, which are thought to represent underlying emotions, are then fed into software and used to detect the same facial combinations in real-life situations.

(Credit: Royal Society)

via MSNBC

A paralyzed man using a new brain sensor has been able to move a computer cursor, open e-mail and control a robotic device simply by thinking about doing it, a team of scientists said Wednesday.

They believe the BrainGate sensor, which involves implanting electrodes in the brain, could offer new hope to people paralyzed by injuries or illnesses.