The present inventors have discovered that mannosyltransferase is essential for normal fungal growth and pathogenicity. Standard processing is applied to create STI trenches in the surface of a substrate, N2 implantations are performed into the sidewalls of the STI trenches. The flip-flops toggle to generate output bit patterns indicative of a frequency overshoot condition. After a determinable wait time, said vectors can be shown to experience recognizably different behavior under the application of a CPMG sequence of pulses.