A world record in detecting extremely low levels of gas impurities

Photoacoustic spectroscopy applied to background-free analyses was used to measure unprecedentedly small trace gas concentrations. Teemu Tomberg from the University of Helsinki developed detection methods that make it possible ...

Catching fast changes in excited molecules

It's hard to see certain molecules react. The reaction is just that fast. Until now. A team of scientists devised a way to reveal time- and energy-resolved information on "dark" states of molecules—ones that are normally ...

Researchers 3-D print metamaterials with novel optical properties

A team of engineers at Tufts University has developed a series of 3-D printed metamaterials with unique microwave or optical properties that go beyond what is possible using conventional optical or electronic materials. The ...

Physicists suggest new way to measure speed in liquid micro-flows

Scientists from ITMO University developed a novel optical method of measuring reagent delivery rates for "labs on a chip." The method is based on a dynamic interaction between a nanoantenna and luminescent molecules as the ...

Impostor planet exposed by astronomers

(Phys.org)—Don't be fooled by its light curve exhibiting anomalies like those caused by planets—one microlensing event with a fancy name OGLE-2016-BLG-0733 is doing a really good job of mimicking an extrasolar world. ...

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