1. A floating memristor emulator, comprising: first, second, third, and fourth current feedback operational amplifiers (CFOAs), each of the CFOAs having y, x, z, and w terminals, the y terminal of the first CFOA being connected to the z terminal of the second CFOA, the y terminal of the third CFOA being connected to the z terminal of the fourth CFOA, and the x terminals of the first and third CFOAs being in operable communication with each other; grounded capacitors C 1 and C 3 connected to the respective z terminal of CFOAs one and three; grounded capacitors C 2 and C 4 connected to the respective x terminal of CFOAs two and four; a differential voltage input, v inp , v inn formed from the y terminals of the first and third CFOAs; a potentiometer R 5 having first and second end terminals and a wiper, the first terminal being connected to the y terminal of the fourth CFOA, the second terminal being connected to the y terminal of the second CFOA, and the wiper being connected to ground; a first parallel resistor-diode combination R 3 and D 1 connected in series with the first terminal of the potentiometer R 5 and having a cathode portion of the diode D 1 connected to the w terminal of the first CFOA; and a second parallel resistor-diode combination R 2 and D 2 connected in series with the second terminal of the potentiometer R 5 and having an anode portion of the diode D 2 connected to the w terminal of the third CFOA.