A lab-on-chip substrate includes a resin having a silicon content of 10% or less by weight as its base material and a hydrophilic polymer covalently bound onto the surface thereof by high-energy ray irradiation suitable for a protein-processing chip. The pant-like absorbent garment is suitable as a low capacity training pant for late stage toilet training. The boundary portion between the wells next to each other has a thickness substantially equivalent to a depth of the wells. The difference in heights being sufficient to eject staples from a body portion of the end effector into an anvil member of the end effector. The substrate is preferably flexible so that it can be formed in a shape which is follows the shape of the device cover. This is a low cost, highly sensitive strain sensor, with low noise and ease of integration for different applications from synthetic tactile skins, to vibrational and health monitoring.