IMPLEMENTATION OF A NANOSCALE OPTOELECTRONIC SWITCH FOR NANOROBOTS: A FIRST-PRINCIPLES APPROACH

Nanotechnology is an emerging field that provides insights into multidisciplinary scientific research. Nanoscale optical switches are a key area for researchers. An optoelectronic molecular switch is also used in nanorobotics. In this study, a bio-inspired molecular optical switch is investigated and characterized for potential use in future nanorobotics systems. It is developed using an Adenine-Thymine-Guanine-Cytosine-based molecular chain, which is the basic building block of DNA. The self-assembly nature of DNA fragments helps the development of this opto-molecular switch. The article describesits characteristics and features. Its density of states, transmission spectra, and current-voltage characteristics are investigated and analyzed. Density Functional Theory (DFT) combined with the Non-Equilibrium Green’s Function (NEGF) method, based on first-principlescalculations, is used to theoretically derive the electronic characteristics of the biomolecular switch. It operates with high efficiency, and its distinct šON’ and šOFF’ states are clearly demonstrated. Hence,it will be applicable in future generations of nanorobotic systems. In summary, this opto-molecular switching device represents a significant advance toward the development of nanorobotic system modelling.