Figure 3.

a Numerical (points) and theoretical energy values (lines) for the lower two eigen modes versus L/λD for Vo = 0.500 eV. b Numerical energy values for the lower three eigen modes versus L/λD for Vo = 2.05 eV

Riyopoulos Nanoscale Research Letters 2009 4:993   doi:10.1007/s11671-009-9347-1