An optical disc or other data storage medium has a substrate supporting a data storage region for storing readable data, and is caused to spin or is otherwise subjected to motion when read. In one embodiment, a plasma is ignited by subjecting a gas in a multi-mode processing cavity to electromagnetic radiation having a frequency between about 1 MHz and about 333 GHz in the presence of a plasma catalyst, which may be passive or active. The data output circuit takes in read data using the DLL clocks outputted from the repeater, and outputs the read data to an outside in a half cycle synchronously with the DLL clocks. The sensor element is in a second power domain of the sensor device. The fabric strip may be spirally wound in a plurality of contiguous turns wherein the first edge in a turn of the fabric strip extends beyond the second edge of an adjacent turn of the fabric strip, thereby forming a spirally continuous seam with adjacent turns of the fabric strip.