A NEW FAMILY OF OPTICALLY CONTROLLED LOGIC GATES USING NAPHTHOPYRAN MOLECULE

Microelectronics is predicted to reach its limit in another five to six years. As an alternative substitute, molecular electronics is analysed as an option, owing to its low power consumption and also very less area occupied by it(typically nm2). Conventional molecular electronic structures for molecular computational structures have been presented in the past. Naphthopyran in one potential candidate in creating optically controllable switches due to its bi-stability. It switches between the open ring and closed ring structures effectively when illuminated with light. In this paper, we will theoretically present a family of logic gates which are controlled optically, using Naphthopyran and associated architectures for basic structures such as AND, OR, XOR, Controlled NOT, Half adder and full adders, which are controlled optically. We see this as a step towards achieving the integration of molecular electronics and photonics, and thus, fabrication of IC like circuits employing the above.