Custom-Built Laser Source (IMAGE) Max Planck Institute for Chemical Ecology Caption Custom-built laser source for mass spectrometry imaging: By means of improved Laser Ablation Electrospray Ionization (LAESI) the surfaces of non-flat samples -- for example this coarse piece of savoy cabbage -- can now be chemically analyzed. Credit Benjamin Bartels, Max Planck Institute for Chemical Ecology 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.