The RMD Research subsidiary of Dynasil Corp. of America received $3.65 million in contracts to develop nuclear detectors from the Department of Homeland Security’s Domestic Nuclear Detection Office (DNDO). The contracts will foster Dynasil’s continued research and development of gamma and neutron radiation detectors that identify illicit nuclear materials. The contracts consist of $2.15 million under the DNDO’s Exploratory Research Program and $1.5 million under the Small Business Innovation Research program. Earlier this year, RMD Research was named a 2011 Department of Homeland Security small-business winner for radiation and nuclear detection. Dynasil is based in Watertown, Mass.