NOVELTY - The method involves rotating several rotatable cathodes in opposite directions respectively in alternating manner at the same time. The distance between two neighboring rotatable cathodes is differed from the distance between two other neighboring rotatable cathodes. A magnet assembly (25) is positioning with respect to the rotatable cathode, so that the magnet assembly is asymmetrically aligned with respect to a plane perpendicularly extending from the substrate to the axis of the rotatable cathode for a predetermined time interval.    USE - Method for coating substrate such as inflexible substrate such as wafer or glass plate used in production of flat panel display and thin film transistor, and flexible substrate such as web and foil. Can also be used in production of energy conversion and storage device such as photovoltaic cell, fuel cell and battery, solid-state lighting device such as LED device and organic LED device, magnetic and optical storage device, micro-electro-mechanical system (MEMS), nano-electro-mechanical system (NEMS), micro-optic and opto-elecro-mechanical system, and micro-optic and optoelectronic device.    ADVANTAGE - The distance between the pairs of cathodes can be increased, so that the overall need of cathodes can be reduced, thus the production costs can be reduced. The hardware costs can be decreased and the cost of operation of the coater can be reduced. The gradient of electrical and optical layer properties such as sheet resistance and optical transmission can be reduced. The deposition times can be reduced, and the wear on the rotatable cathode drives can be reduced. The crosstalk of electrons between targets can be decreased, due to the increased distance between pairs of rotatable cathodes, thus the lifetime of target of the cathode can be increased. The electrons are forced to move within the magnetic field, so that the probability of ionizing the gas molecules by several orders of magnitude can be enhanced, thus the deposition rate can be increased significantly.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) a controller for controlling coating process; and    (2) a coater for coating substrate.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the rotatable cathodes.    Rotatable cathodes (10-15)    Magnet assembly (25)    Substrate (100)    Substrate holder (110)