FIG 1 (IMAGE) Compuscript Ltd Caption An array of several hundred chair-shaped nanostructures (on the right in an electron-microscope picture) is able to halve the wavelength of an incident "red" beam and focus the generated "blue" beam at a desired distance. Credit OEA Usage Restrictions Credit must be given to the creator. License CC BY 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.