Tunable thermal switching via DNA-based nano-devices Public Deposited

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This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by IOP Publishing and can be found at:  http://iopscience.iop.org/0957-4484/.

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  • DNA has a well-defined structural transition-the denaturation of its double-stranded form into two single strands-that strongly affects its thermal transport properties. We show that, according to a widely implemented model for DNA denaturation, one can engineer DNA 'heattronic' devices that have a rapidly increasing thermal conductance over a narrow temperature range across the denaturation transition (similar to 350 K). The origin of this rapid increase of conductance, or 'switching', is the softening of the lattice and suppression of nonlinear effects as the temperature crosses the transition temperature and DNA denatures. Most importantly, we demonstrate that DNA nano-junctions have a broad range of thermal tunability by varying the sequence and length, and exploiting the underlying nonlinear behavior. We discuss the role of disorder in the base sequence, as well as the relation to genomic DNA. These results set the basis for developing thermal devices out of materials with nonlinear structural dynamics, as well as understanding the underlying mechanisms of DNA denaturation.
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  • Chien, C., Velizhanin, K. A., Dubi, Y., & Zwolak, M. (2013). Tunable thermal switching via DNA-based nano-devices. Nanotechnology, 24(9), 095704. doi: 10.1088/0957-4484/24/9/095704
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  • description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2013-03-18T14:24:30Z No. of bitstreams: 2 ZwolakMichaelPhysicsTunableThermalSwitchingSupplemental.pdf: 332521 bytes, checksum: 146a087e2e55502809812911ccf13134 (MD5) ZwolakMichaelPhysicsTunableThermalSwitching.pdf: 648275 bytes, checksum: b1eed429ede72a3de08465ed12317aba (MD5)
  • description.provenance : Made available in DSpace on 2013-03-18T16:41:37Z (GMT). No. of bitstreams: 2 ZwolakMichaelPhysicsTunableThermalSwitchingSupplemental.pdf: 332521 bytes, checksum: 146a087e2e55502809812911ccf13134 (MD5) ZwolakMichaelPhysicsTunableThermalSwitching.pdf: 648275 bytes, checksum: b1eed429ede72a3de08465ed12317aba (MD5) Previous issue date: 2013-02-08
  • description.provenance : Approved for entry into archive by Deborah Campbell(deborah.campbell@oregonstate.edu) on 2013-03-18T16:41:37Z (GMT) No. of bitstreams: 2 ZwolakMichaelPhysicsTunableThermalSwitchingSupplemental.pdf: 332521 bytes, checksum: 146a087e2e55502809812911ccf13134 (MD5) ZwolakMichaelPhysicsTunableThermalSwitching.pdf: 648275 bytes, checksum: b1eed429ede72a3de08465ed12317aba (MD5)

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