Cornell researchers move beyond 'nano' to 'atto' to build a scale sensitive enough to weigh a virus FOR RELEASE: April 2, 2004 Contact: Bill Steele Office: 607-255-7164 E-Mail: ws21@cornell.edu A gold dot, about 50 nanometers in diameter, fused to the end of a cantilevered oscillator about 4 micrometers long. A one-molecule-thick layer of a sulfur-containing chemical deposited on the gold adds a mass of about 6 attograms, which is more than enough to measure. Craighead Group/Cornell Univeristy Click on the image for a high-resolution version (2184 x 1245 pixels, 364K) ITHACA, N.Y. -- Cornell University researchers already have been...