Ultrathin ZnO Films (IMAGE) Japan Science and Technology Agency Caption Tip-enhanced resonance Raman spectrum of ultrathin ZnO films on a Ag(111) surface. (a) STM image of 2- and 3-monolayer ZnO films epitaxially grown on Ag(111) at 78 K. (b) Schematic of the ZnO film. (c) Tip-enhanced resonance Raman spectrum of the ZnO film. Credit Takashi Kumagai 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.