A strontium silicate-based phosphor, a fabrication method thereof, and an LED using the strontium silicate-based phosphor are provided. A pressure value is stored and subsequently compared with one of the pressures, the stored pressure value being stored electronically and compared with at least one value of the output signal from a pressure sensor. Alternatively, out-of-plane deformation is provided by leaving an axial gap on a splice bolts. A mode selection circuit transmits mode selection information under control of the media gate signal, wherein said data gate signal controls the transfer of data between the hard disk controller and a readwrite channel in accordance with the media gate signal. Motion of the tethers can be converted to useful energy in any commercially viable manner, for example by driving an electric generator or a water pump.