A method for making a resilient cushion includes providing a particulate polymer, discrete pieces of foam and a plasticizer. In one embodiment, a method and apparatus is provided for dynamically reconfiguring a plurality of test circuits in re-useable modules on an IC without modifying the controller state machine in the re-usable module. The method further includes forming at least one gate structure within the recessed portion of the semiconductor material. Boron can be activated in the regions irradiated only with the laser beam, whereas phosphorus may be activated in a low temperature sintering step on the entire surface. Alternatively, an infrared conversion device detects infrared rays converted into visible light by detecting a change caused in the permittivity of a light receiving material by infrared absorption as a change in the intensity of scattering light based on local plasmon resonance.