Penn State researcher Amir Sheikhi (IMAGE) Penn State Caption Penn State researchers, including principal investigator Amir Sheikhi, assistant professor of chemical engineering, improved upon previous work and extracted larger sample sizes of neodymium from less concentrated solutions. Credit Credit: Kelby Hochreither/Penn State Usage Restrictions No restrictions. License Public Domain 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.