New recipe for single-atom transistors may enable quantum computers with unparalleled memory and processing power

 

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Single-Atom Transistor

 Linking multiple copies of these devices may lay the foundation for quantum computing.

Once unimaginable, transistors consisting only of several-atom clusters or even single atoms promise to become the building blocks of a new generation of computers with unparalleled memory and processing power. But to realize the full potential of these tiny transistors — miniature electrical on-off switches — researchers must find a way to make many copies of these notoriously difficult-to-fabricate components.

Now, researchers at the National Institute of Standards and Technology (NIST) and their colleagues at the University of Maryland have developed a step-by-step recipe to produce the atomic-scale devices. Using these instructions, the NIST-led team has become only the second in the world to construct a single-atom transistor and the first to fabricate a series of single electron transistors with atom-scale control over the devices’ geometry.

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Why we have ridiculous standards of beauty In just 37 Seconds

[youtube]http://www.youtube.com/watch?v=17j5QzF3kqE[/youtube]

There is the reason that even when a woman is in really great shape, wears a size 4, and is healthy, it is never good enough for them.  All of our logic and intelligence have trouble combatting what we’ve seen as “perfect” day after day.

 

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Multicolor MRI

Multicolor MRI 

Mini magnets injected into the body, microscale magnetic particles (top) could yield colored magnetic resonance images

Magnetic resonance imaging (MRI) is a clinical workhorse, producing exquisitely detailed 3-D pictures of tumors, blood vessels, bones, and structures deep inside the body. MRI images are in shades of gray, and their contrast is based on how much water is in the part of the body under study. Now physicists have fabricated miniature magnetic particles that could brighten MRI with a rainbow of colors that convey a wealth of information about the disease states and behavior of tissues in the body.

 

 

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