A detailed description of the pull-off force apparatus is described in reference. The Axisymmetric Pull-off force Apparatus The axisymmetric pull-off force apparatus used in these studies (Figure ) is similar to that described in the past. The main issue here was to grab the domed epoxy disc appropriately so that the pull-off experiment could be carried out. For this purpose, a screw was attached to the bottom of the load cell, which had a dimple at the end, A small amount of the hot melt epoxy was first deposited on it, which formed the shape of a dome.