From Virtual to Physical: Integration of Chemical Logic Gates

摘要

Logic gates are fundamental building blocks of silicon circuitry. Current technology used in integrated circuit design is fast approaching its physical limits, and this "impending doom" scenario has led many to consider potential alternatives in information processing. Bottom-up approaches, including molecular mimicry of logic gates with ion-responsive molecules, have received considerable attention since 1993, following the pioneering work of de Silva et al. In nearly two decades, all 16 fundamental logic gates and higher functions such as half-adder/subtractor, multiplexer, password protection, encoder/decoder, and sequential logic were demonstrated.