NMR Technologies (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Spectroscopy with conventional nuclear magnetic resonance (NMR) requires large, expensive, superconducting magnets cooled by liquid helium, like the one in the background. The Pines and Budker groups have demonstrated NMR spectroscopy with a device only a few centimeters high, using no magnets at all (foreground). The chemical sample in the test tube (green) is polarized by introducing parahydrogen. The spectrum of the sample is read using a microfabricated vapor cell (center) whose contents are polarized by a pump laser and read with a probe laser, which enter the vapor cell at right angles. Credit Pines and Budker groups, Berkeley Lab and UC Berkeley; Wikipedia Creative Commons 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.