portable spectrometer (IMAGE) Texas A&M University Caption A smartphone records the Raman spectrum of an unknown material (an ethanol solution, in this case) for further analysis. Credit Texas A&M University Engineering Usage Restrictions free use with credit License Original 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.