Exponent, n

Drug release mechanism

Thin Film

Cylinder

Sphere

0.5

0.45

0.43

FickianDiffusion

0.5 ˂ n ˂ 1.0

0.45 ˂ n ˂ 0.89

0.43 ˂ n ˂ 0.85

Anomalous Transport

1.0

0.89

0.85

Case-II Transport