dorsal/arxiv
View SchemaEngines at molecular scales
| Authors | Raishma Krishnan, A. M. Jayannavar |
|---|---|
| Categories | |
| ArXiv ID | physics/0408058 |
| URL | https://arxiv.org/abs/physics/0408058 |
Abstract
In recent literature there has been a lot of interest in the phenomena of noise induced transport in the absence of an average bias occurring in spatially periodic systems far from equilibrium. One of the main motivations in this area is to understand the mechanism behind the operation of biological motors at molecular scale. These molecular motors convert chemical energy available during the hydrolysis of ATP into mechanical motion to transport cargo and vesicles in living cells with very high reliability, adaptability and efficiency in a very noisy environment. The basic principle behind such a motion, namely the Brownian ratchet principle, has applications in nanotechnology as novel nanoparticle separation devices. Also, the mechanism of ratchet operation finds applications in game theory. Here, we briefly focus on the physical concepts underlying the constructive role of noise in assisting transport at a molecular level. The nature of particle currents, the energetic efficiency of these motors, the entropy production in these systems and the phenomenon of resonance/coherence are discussed.
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"abstract": "In recent literature there has been a lot of interest in the phenomena of\nnoise induced transport in the absence of an average bias occurring in\nspatially periodic systems far from equilibrium. One of the main motivations in\nthis area is to understand the mechanism behind the operation of biological\nmotors at molecular scale. These molecular motors convert chemical energy\navailable during the hydrolysis of ATP into mechanical motion to transport\ncargo and vesicles in living cells with very high reliability, adaptability and\nefficiency in a very noisy environment. The basic principle behind such a\nmotion, namely the Brownian ratchet principle, has applications in\nnanotechnology as novel nanoparticle separation devices. Also, the mechanism of\nratchet operation finds applications in game theory. Here, we briefly focus on\nthe physical concepts underlying the constructive role of noise in assisting\ntransport at a molecular level. The nature of particle currents, the energetic\nefficiency of these motors, the entropy production in these systems and the\nphenomenon of resonance/coherence are discussed.",
"arxiv_id": "physics/0408058",
"authors": [
"Raishma Krishnan",
"A. M. Jayannavar"
],
"categories": [
"physics.bio-ph"
],
"title": "Engines at molecular scales",
"url": "https://arxiv.org/abs/physics/0408058"
},
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