Innovative Polymeric Nano Materials for
Unconventional Thermal Transport Control
Tengfei Luo
Assistant Professor
Aerospace and Mechanical Engineering
University of Notre Dame
11th US-Korea Forum on Nanotechnology
September 29, 2014
Molecular-level Energy & Mass Transport
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Thermal Transport in Polymers
Molecular-level Energy & Mass Transport
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Thermal Transport at Hard-Soft Interfaces
Polymer nanocomposite
Interfacial bonds:
vdW -> G ~ O(1-10) MW/m2K
Covalent -> G ~ O(100) MW/m2K*
Vibration power
Vibration coupling:
hard
soft
Frequency
Molecular thermal bridge:
http://www.rsc.org
Hard-soft interface
* Luo and Lloyd, Advanced Functional Materials, 2012
Molecular-level Energy & Mass Transport
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Manipulate Thermal Transport in Polymer Fibers
Polyethylene:
• Do other fibers have high(er) thermal conductivity?
Thermal switch:
Thermal diode:
Molecular-level Energy & Mass Transport
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*Shen et al., Nat. Nanotech., 2010
Thank you!
Questions?
Come to see poster:
Innovative Polymeric Nano Materials for
Unconventional Thermal Transport Control
Molecular-level Energy & Mass Transport
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