New Nanoscale Imaging Method Finds Application in Plasmonics (image) National Institute of Standards and Technology (NIST) Share Print E-Mail Caption Infrared laser light (purple) from below a sample (blue) excites ring-shaped nanoscale plasmonic resonator structures (gold). Hot spots (white) form in the rings' gaps. In these hot spots, infrared absorption is enhanced, allowing for more sensitive chemical recognition. A scanning AFM tip detects the expansion of the underlying material in response to absorption of infrared light. Credit NIST Usage Restrictions None Share Print E-Mail 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.