UVM Chemist Mona Sharafi (IMAGE) University of Vermont Caption University of Vermont post-doctoral researcher Mona Sharafi helped build a nanoscale tool that can untie knots of protein, plastic or other polymers. Called a "nanocage," the advance in chemistry promises to help create new kinds of industrial and biological materials. Credit Joshua Brown/UVM Usage Restrictions with coverage of associated story. 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.