Argonne National Laboratory

Nachappa “Sami” Gopalsami conducts research on development of fieldable electromagnetic sensors for detection of chemical, biological, radiological, nuclear, and explosive materials.

He has developed and field tested at the DOE Nevada test site active and passive millimeter-wave systems for remote chemical detection. With a heat cell spectrometer built at Argonne, he has measured and catalogued for the first time terahertz spectral signatures of high explosive molecules. He is currently investigating remote detection of radioactive plumes using radio waves.

He is also working on standoff detection of biomarkers for determination of intent of a person.