The physics of coffee rings

For centuries, intellectuals have met at the ring-stained surfaces of coffee shops to pore over the most pressing problems of the day -- but has anyone ever pondered the coffee rings they left behind? What causes the formation ...

Novel fuel cell catalyst lowers need for precious metal

Fuel cells could create a breakthrough for electric cars, because refuelling them is fast and easy, just like your traditional gas guzzler. But there's an obstacle. Current fuel cells need platinum in order to work. And that's ...

Making better biosensors with electron density waves

An emerging field with the tongue-twisting name of "optofluidic plasmonics" promises a new way to detect and analyze biological molecules for drug discovery, medical diagnostics, and the detection of biochemical weapons. ...

Engineer shrinks 'U' logo

In an example of how a technology wonk displays school spirit, an engineer has created a golden University of Utah logo that is smaller than the width of an average human hair.

Tiny rulers to measure nanoscale structures

With the advent of nanometer-sized machines, there is considerable demand for stable, precise tools to measure absolute distances and distance changes. One way to do this is with a plasmon ruler. In physics jargon, a "plasmon" ...

Scientists find unusual electrons that go with the flow

On a quest to discover new states of matter, a team of Princeton University scientists has found that electrons on the surface of specific materials act like miniature superheroes, relentlessly dodging the cliff-like obstacles ...

Creating a Captivating Cage for Carbon

(PhysOrg.com) -- A tough, hard-working particle known as ZIF-8 that can selectively remove carbon dioxide from a complex mixture of gases was designed by scientists at Pacific Northwest National Laboratory. Similar materials ...

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