Javier Vela, Iowa State University (IMAGE) Iowa State University Caption Javier Vela and the chemists in his research group have been working to produce semiconductors from materials that are safe, abundant and inexpensive to manufacture. Credit Photo by Christopher Gannon and courtesy of the Iowa State University College of Liberal Arts and Sciences Usage Restrictions None 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.