Spectra02 (IMAGE) Kazan Federal University Caption a Transmission spectrum of PPC with the 30-nm Au layer. b Transmission spectra of stand-alone the 40-nm Au continuous layer. c Transmission spectra of PPC with caps. Solid line is the spectrum of PC with the 40-nm Au caps. Dashed line is the spectrum of stand-alone the 40-nm Au caps Credit Kazan Federal University 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.