Logic gates for entropic transport

We consider a Brownian particle that is confined in a two-dimensional enclosure and driven by a combination of input signals. It has been shown that the logic gates can be formed by considering the state of the particle experiencing an entropic barrier as the output signal. For a consistent logical...

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Bibliographic Details
Published in:Physical review. E, Statistical, nonlinear, and soft matter physics Statistical, nonlinear, and soft matter physics, 2012-10, Vol.86 (4 Pt 1), p.041112-041112, Article 041112
Main Authors: Das, Moupriya, Mondal, Debasish, Ray, Deb Shankar
Format: Article
Language:English
Subjects:
Algorithms
Biological Transport
Biophysics - methods
Diffusion
Entropy
Kinetics
Logic
Models, Biological
Models, Chemical
Models, Statistical
Models, Theoretical
Motion
Probability
Stochastic Processes
Temperature
Time Factors
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Summary:We consider a Brownian particle that is confined in a two-dimensional enclosure and driven by a combination of input signals. It has been shown that the logic gates can be formed by considering the state of the particle experiencing an entropic barrier as the output signal. For a consistent logical output, it is necessary to optimize the strength of the noise driving the particle for a given system size. The variation of the logical output behavior exhibits a turnover at an optimal value of system size parameter, implying a size resonance condition in entropic transport. The role of a transverse bias field used to tune the transport between the entropy dominated regime and the energy dominated regime is elucidated.
ISSN:1539-3755
1550-2376
DOI:10.1103/PhysRevE.86.041112