A communication device has a process unit, a network interface, a communication interface, an interface control unit, a device control unit, and a relay unit. The top ring holds a workpiece to be polished and presses the workpiece against the abrasive cloth. In the area where the height of each of the raised portions is relatively low and the depth of each of the recessed portions is relatively shallow, first and second flat surfaces are respectively provided at a top portion of the raised portion and a bottom portion of the recessed portion. By constructing an absorber from two separate pieces, it is possible to apply spectral coatings with different curing characteristics, to thermal absorber that acts as a single thermal mass. Methods of using the compositions are disclosed and include administering to a subject in need of such treatment.