Molecular Logic Based on Optical Signaling

Authored by: Uwe Pischel , Joakim Andréasson

CRC Handbook of Organic Photochemistry and Photobiology

Print publication date:  March  2012
Online publication date:  March  2012

Print ISBN: 9781439899335
eBook ISBN: 9781466561250
Adobe ISBN:

10.1201/b12252-39

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Abstract

Logic has many implications in everyday life. Especially in our modern society, which is driven by information technology, logic plays a fundamental part in the focus of computing. The concept of logic, commonly based on binary numbers, that is, 0 and 1, is universal. Thus, any type of signal, which is processed by a physical system in a bistable manner, could be imagined for this purpose. This generalization opened the doors for molecular systems as subnanometric building blocks for logic devices. In the context of the pressing need to increase the density of functional units per electronic circuit and, thus, to obtain more powerful computing devices, the miniaturization of building blocks (the so-called bottom-up approach) has found increased attention in recent years [1]. On the other hand, conventional lithographic techniques (top-down approach), which are currently used for microchip fabrication, have physical limits of spatial resolution.

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