New Photoacoustic Technique Detects Gases at Parts-Per-Quadrillion Level
June 27, 2017
June 27, 2017
PROVIDENCE, R.I., June 27 -- Brown University issued the following news release:
A team of researchers has found a way to detect trace gases down to concentrations at the parts-per-quadrillion level using a new variation on the photoacoustic effect, a technique that measures the sound generated when light interacts with molecules.
"In many ways, the photoacoustic effect is already the most practical method available for detecting pollutants in the atmosphere," . . .
A team of researchers has found a way to detect trace gases down to concentrations at the parts-per-quadrillion level using a new variation on the photoacoustic effect, a technique that measures the sound generated when light interacts with molecules.
"In many ways, the photoacoustic effect is already the most practical method available for detecting pollutants in the atmosphere," . . .