Handheld Plant Scanners (IMAGE) Purdue University Caption Neal Carpenter (left), a postdoctoral research assistant in Purdue University's Department of Agronomy walks through fields of corn and sorghum preparing to use a handheld sensor developed at Purdue to measure the health of a plant. Matthew Fenton uses a smartphone to collect the data. Jian Jin, an assistant professor in Purdue's Department of Agricultural and Biological Engineering, hopes his hyperspectral-imaging device will be used widely by plant scientists and farmers nationally and internationally. Credit Purdue Research Foundation image/Oren Darling 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.