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Design of High Quality Chemical XOR Gates with Noise Reduction
Author(s) -
Wood Mackenna L.,
Domanskyi Sergii,
Privman Vladimir
Publication year - 2017
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201700018
Subject(s) - xor gate , signal (programming language) , binary number , function (biology) , noise reduction , noise (video) , reduction (mathematics) , exclusive or , computer science , algorithm , logic gate , electronic engineering , biological system , mathematics , arithmetic , artificial intelligence , engineering , image (mathematics) , geometry , evolutionary biology , biology , programming language
We describe a chemical XOR gate design that realizes gate‐response function with filtering properties. Such gate‐response function is flat (has small gradients) at and in the vicinity of all the four binary‐input logic points, resulting in analog noise suppression. The gate functioning involves cross‐reaction of the inputs represented by pairs of chemicals to produce a practically zero output when both are present and nearly equal. This cross‐reaction processing step is also designed to result in filtering at low output intensities by canceling out the inputs if one of the latter has low intensity compared with the other. The remaining inputs, which were not reacted away, are processed to produce the output XOR signal by chemical steps that result in filtering at large output signal intensities. We analyze the tradeoff resulting from filtering, which involves loss of signal intensity. We also discuss practical aspects of realizations of such XOR gates.