TY - JOUR
T1 - Tunable thermal transport and reversible thermal conductivity switching in topologically networked bio-inspired materials
AU - Tomko, John A.
AU - Pena-Francesch, Abdon
AU - Jung, Huihun
AU - Tyagi, Madhusudan
AU - Allen, Benjamin D.
AU - Demirel, Melik C.
AU - Hopkins, Patrick E.
N1 - Funding Information:
J.A.T. and P.E.H. acknowledge support from the Office of Naval Research (grant no. N00014-15-12769). M.C.D., B.D.A., A.P.-F. and H.J. were supported by the Army Research Office (grant no. W911NF-16-1-0019) and the Materials Research Institute of Pennsylvania State University. Access to the HFBS was provided by the Center for High Resolution Neutron Scattering, a partnership between the National Science Foundation and NIST under agreement no. DMR-1508249. Certain commercial material suppliers are identified in this paper to foster understanding. Such identification does not imply recommendation or endorsement by the NIST, nor does it imply that the materials or equipment identified are necessarily the best available for the purpose.
Publisher Copyright:
© 2018, The Author(s).
PY - 2018/10/1
Y1 - 2018/10/1
N2 - The dynamic control of thermal transport properties in solids must contend with the fact that phonons are inherently broadband. Thus, efforts to create reversible thermal conductivity switches have resulted in only modest on/off ratios, since only a relatively narrow portion of the phononic spectrum is impacted. Here, we report on the ability to modulate the thermal conductivity of topologically networked materials by nearly a factor of four following hydration, through manipulation of the displacement amplitude of atomic vibrations. By varying the network topology, or crosslinked structure, of squid ring teeth-based bio-polymers through tandem-repetition of DNA sequences, we show that this thermal switching ratio can be directly programmed. This on/off ratio in thermal conductivity switching is over a factor of three larger than the current state-of-the-art thermal switch, offering the possibility of engineering thermally conductive biological materials with dynamic responsivity to heat.
AB - The dynamic control of thermal transport properties in solids must contend with the fact that phonons are inherently broadband. Thus, efforts to create reversible thermal conductivity switches have resulted in only modest on/off ratios, since only a relatively narrow portion of the phononic spectrum is impacted. Here, we report on the ability to modulate the thermal conductivity of topologically networked materials by nearly a factor of four following hydration, through manipulation of the displacement amplitude of atomic vibrations. By varying the network topology, or crosslinked structure, of squid ring teeth-based bio-polymers through tandem-repetition of DNA sequences, we show that this thermal switching ratio can be directly programmed. This on/off ratio in thermal conductivity switching is over a factor of three larger than the current state-of-the-art thermal switch, offering the possibility of engineering thermally conductive biological materials with dynamic responsivity to heat.
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U2 - 10.1038/s41565-018-0227-7
DO - 10.1038/s41565-018-0227-7
M3 - Article
C2 - 30104620
AN - SCOPUS:85052489311
SN - 1748-3387
VL - 13
SP - 959
EP - 964
JO - Nature nanotechnology
JF - Nature nanotechnology
IS - 10
ER -