NHC single layer (IMAGE) University of Münster Caption A high-resolution scanning tunneling microscopy image of the ordered NHC single layer on silicon; NHC stands for "N-heterocyclic carbenes" Credit Dr. Martin Franz Usage Restrictions The use of the image is permitted exclusively in the above-mentioned context and with reference to the source. 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.