The present invention provides a coating composition comprising: A coating composition comprising: TEOS; a surfactant; at least one organosilane; HCl; water; and ethanol. A portion of both the back electrode and the junction layer are separated from a selected parent solar cell. The first RFID tag includes a temperature sensor. In addition, a used conditioning disk may be reworked by detaching the abrasive grains from the body, and attaching new abrasive grains. At least one of the rotors is not fixed to the shroud.