Withmetalsaltsandorganic acidsasmordant, the dyeingproperties of madderfabric dyed with sorghumred, a naturaldye, were studied using pre-mordant and post-mordant methods.
That's exactly what the whiz-kids from the City College of New York, Rice University and the US Army Research Laboratory have done with a new lithium-ion battery powered by red dye extracted from madder roots.