1. A memcapacitor device ( 100 ) comprising: a first electrode ( 104 ) and a second electrode ( 106 ); a memcapacitive matrix ( 102 ) interposed between the first electrode ( 104 ) and the second electrode ( 106 ); and mobile dopants ( 111 ) contained within the memcapacitive matrix ( 102 ) which are repositioned by the application of a programming voltage ( 126 ) across the first electrode ( 104 ) and second electrode ( 106 ) to alter the capacitance of the memcapacitor device ( 100 ).