COUPLED BISTABLE CHEMICAL-SYSTEMS - EXPERIMENTAL REALIZATION OF BOOLEAN FUNCTIONS USING A SIMPLE FEEDFORWARD NET

We use the BZ-reaction and the MBO-reaction to implement the Boolean f unctions AND, OR, NAND, and NOR by the coupling of three chemical reac tors. The experimental setup is analogous to a simple neural feedforwa rd network with two reactors serving as the input layer and one reacto r as the output layer. Coupling between the input and output reactors is carried out through the flow rate (BZ-and MBO-reaction) and through the electrical current by the use of Pt working electrodes (BZ-reacti on). The XOR- and XNOR functions may be realized with 5 reactors using combinations of the AND, NOR, NOR- and the AND, NOR, Or-chemical gate s, respectively.