We propose an alternative model to Lindemann’s criterion for melting that explains the melting of
thin films on the basis of a molecular zipper-like mechanism. Using this model, a unique criterion
for melting is obtained. We compared the results of the proposed model with experimental data of
melting points and heat of fusion for many materials and obtained interesting results. The
interesting thing reported here is how complex physics problems can sometimes be modeled with simple
objects around us that seemed to have no correlation. This kind of approach is sometimes very
important in physics education and should always be taught to undergraduate or graduate students.