A method of forming a semiconductor structure includes providing a composite substrate, which includes a bulk silicon substrate and a silicon germanium layer over and adjoining the bulk silicon substrate. The user interface to provide the publication on the display allows a user to request a subsequent page and produce a sequence of animated frames of the publication with the page progressively turned and recalculates the rotation of the page with respect to the publication and the orientation of the publication with respect to the user for each frame. The oxygenated hydrocarbons may originate from any source, but are preferably derived from biomass. The antenna is mounted on the circuit board, is operable so as to transmit the signal generated by the sensor, and includes a spiraling antenna section that lies on a plane parallel to the circuit board. Each rod or tube can comprise a transparent or translucent polymeric sheath for a series of LEDs. The sensor is highly sensitive due to the almost frictionless rotation of the wheel about its axle.