Silicon Photonic Absorption Methane Spectrometer (IMAGE) Optica Caption This artistic rendering depicts the new silicon photonic absorption spectrometer, which is smaller than a dime and can be manufactured using high-volume computer chip fabrication techniques. The portion of infrared light protruding outside the waveguide is absorbed by methane molecules, enabling spectroscopic measurement of the methane concentration. Credit Joe Green, Beaverworks Canada Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.