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Fermi-Pasta-Ulam Ph...
Fermi-Pasta-Ulam Physics with Nanomechanical Graphene Resonators: Intrinsic Relaxation and Thermalization from Flexural Mode Coupling
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- Midtvedt, Daniel, 1988 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Croy, Alexander, 1981 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Isacsson, Andreas, 1975 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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Qi, Z. A. (författare)
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Park, H. S. (författare)
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(creator_code:org_t)
- 2014
- 2014
- Engelska.
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Ingår i: Physical Review Letters. - 1079-7114 .- 0031-9007. ; 112:14
- Relaterad länk:
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http://publications.... (primary) (free)
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Thermalization in nonlinear systems is a central concept in statistical mechanics and has been extensively studied theoretically since the seminal work of Fermi, Pasta, and Ulam. Using molecular dynamics and continuum modeling of a ring-down setup, we show that thermalization due to nonlinear mode coupling intrinsically limits the quality factor of nanomechanical graphene drums and turns them into potential test beds for Fermi-Pasta-Ulam physics. We find the thermalization rate Gamma to be independent of radius and scaling as Gamma similar to T* /is an element of(2)(pre), where T* and is an element of(pre) are effective resonator temperature and prestrain.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- MONOLAYER GRAPHENE
- Physics
- DYNAMICS
- ELASTIC PROPERTIES
- Multidisciplinary
- LIMIT
- SYSTEMS
- DISSIPATION
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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