The higher amplitude heat map plots of TOF B at ΔU A ~ 1.0 eV (Figure ) and ΔU A ~ 1.5 eV (Figure ) show enhanced performance at lower frequency (about 10 -2 s -1 ), because the amplitude oscillation endpoints move further and further away from the volcano plot peak. Moreover, there exists a sharp transition between the forward and backwards reaction at 0.4 eV relative binding energy, which exactly matches the absolute value of delta, δ ~ 1.4 eV. High conversion to either A or B (>99%) is achievable at these higher amplitudes requiring only the selective application of surface binding oscillation at the relevant frequency and oscillation amplitude endpoints.