An assistant professor at the University of Iowa has been working on a system that uses a solar cell smaller than your fingernail to detect certain types of cancer. The chip, covered with millions of nanowires and the antibodies for a specific cancer, can quickly discover if a person has cancer by examining a drop of blood. Fatima Toor, an assistant professor of electrical and computer engineering at UI, also has formed a company, Advanced Silicon Group, which may manufacture and sell the product someday. The company is a semifinalist in a startup contest in San Francisco Feb. 13-18. The grand prize is $25,000. Read the full news release