The nature of chemical inputs is a suitable variable with much diversity. Pdf the field of molecular logic gates originated 25 years ago, when a. Some of the simplest molecular memories can be seen to emulate the rs latch. The articles are written by the most active researchers in this exciting area of research, representing various aspects of the broadly defined area of unconventional molecular computing.
Molecular logicbased computation is a broad umbrella covering molecular sensors at its simplest level and logic gate arrays involving steadily increasing levels of parallel and serial integration. The sequential aspects of molecular logic are taken up in this chapter, even though the need to avoid memory effects in some of the combinational logic devices was mentioned in several previous chapters. While the photochemical approach based on chemical inputs and light output eventually became a success, other approaches which arose around the same time also come in for critical discussion. The somewhat more complex d latch also has molecular versions. Taking baby steps in molecular logicbased computation queens. Logic structures and an adder designed from molecular electronic. Introduction to molecular computing masami hagiya professor, university of tokyo. We gather, store, process and transmit information in society. Probe computing model based on small molecular switch bmc. A range of techniques can also be employed to monitor the. The fluorescent petphotoinduced electron 10 transfer switching principle remain s a loyal servant of this entire field. Molecular logic gates become reconfigurable because of certain diversities which are available to chemical phenomena when compared to electronics.
Pdf molecular memory with downstream logic processing. Building ph sensors into paperbased smallmolecular logic. Evolutionary computation molecular evolutionary engineering artificial life raw object analysis synthesis software mathematical biology evolution. Both eukaryotes and prokaryotes are covered and merged. The events and contexts that led to the launching of molecular logicbased computation as an experimental field are outlined. We all learn in schools, factories, bars and streets. The present special issue is a collection of invited articles covering different aspects of molecular logic systems. Dna molecular computing, dnazyme, probe machine, streptavidin. Molecular logicbased computation is a broad umbrella covering molecular. Current computers are based on semiconductor logic gates which perform binary arithmetic. It is a growing branch of chemical science which highlights the connection between information technology engineering and biological and chemistry. Taking baby steps in molecular logicbased computation.
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