NIST's 'Nanotubes on a Chip' May Simplify Optical Power Measurements (image) National Institute of Standards and Technology (NIST) Share Print E-Mail Caption The circular patch of carbon nanotubes on a pink silicon backing is one component of NIST's new cryogenic radiometer, shown with a quarter for scale. Gold coating and metal wiring has yet to be added to the chip. The radiometer will simplify and lower the cost of disseminating measurements of laser power. Credit Tomlin/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.