Interfaces such as grain boundaries are ubiquitous in crystalline materials and have provided a fertile area of research over decades. Their importance stems from the numerous critical phenomena associated with them, such as grain boundary sliding, migration, and interaction with other defects, that govern the mechanical properties of materials. Although these crystalline interfaces exhibit small out-of-plane fluctuations, statistical thermodynamics of membranes has been effectively used to extract relevant physical quantities such as the interface free energy, grain boundary stiffness, and interfacial mobility. In this perspective, we advance the viewpoint that thermal fluctuations of crystalline interfaces can serve as a computational microscope for gaining insights into the thermodynamic and kinetic properties of grain boundaries and present a rich source of future study.
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December 2017
Research-Article
Thermal Fluctuations as a Computational Microscope for Studying Crystalline Interfaces: A Mechanistic Perspective
Dengke Chen,
Dengke Chen
Department of Mechanical Engineering,
University of Houston,
Houston, TX 77204
University of Houston,
Houston, TX 77204
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Yashashree Kulkarni
Yashashree Kulkarni
Department of Mechanical Engineering,
University of Houston,
Houston, TX 77204
e-mail: ykulkarni@uh.edu
University of Houston,
Houston, TX 77204
e-mail: ykulkarni@uh.edu
Search for other works by this author on:
Dengke Chen
Department of Mechanical Engineering,
University of Houston,
Houston, TX 77204
University of Houston,
Houston, TX 77204
Yashashree Kulkarni
Department of Mechanical Engineering,
University of Houston,
Houston, TX 77204
e-mail: ykulkarni@uh.edu
University of Houston,
Houston, TX 77204
e-mail: ykulkarni@uh.edu
1Corresponding author.
Contributed by the Applied Mechanics Division of ASME for publication in the JOURNAL OF APPLIED MECHANICS. Manuscript received September 5, 2017; final manuscript received September 8, 2017; published online September 22, 2017. Editor: Yonggang Huang.
J. Appl. Mech. Dec 2017, 84(12): 121001 (6 pages)
Published Online: September 22, 2017
Article history
Received:
September 5, 2017
Revised:
September 8, 2017
Citation
Chen, D., and Kulkarni, Y. (September 22, 2017). "Thermal Fluctuations as a Computational Microscope for Studying Crystalline Interfaces: A Mechanistic Perspective." ASME. J. Appl. Mech. December 2017; 84(12): 121001. https://doi.org/10.1115/1.4037885
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