An improved heatsink attachment assembly includes a first anchor configured to secure to a first location of the circuit board, and a second anchor configured to secure to a second location of the circuit board. After the crystallization, a patterning step is carried out to form an active layer with a desired shape. A voice response unit or a tone receiver and announcement player in the network are the voice interface with the customer and are provided at the originating switch in the network to eliminate multiple switches from the call path. The direction of profile shift depends on the rotational direction of the shaft while magnetization proceeds.