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Nano and Micromechanics Laboratory |
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We investigate the atomic scale rearrangement which occurs on a metal surface after energetic ion bombardment. This project aims to reveal the mechanism of nano pattern formation by using the scale bridging method between molecular dynamics (MD) and continuum theory. |
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Anisotropic rearrangement of substrate atoms during ion bombardment |
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This project focuses on sand particle size binarization using finite element analysis and nanoindenter to probe the interactions between contact stress, cohesion and friction. |
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Size binarization of sand particles |
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Silicon-based anodes show great promise as next generation lithium ion batteries, but are prone to extensive cracking due to large volume changes. We quantitatively describe these cracking mechanisms using speckle interferometry. |
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Cracking of Si-based anodes in lithium ion batteries |
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Irradiation controlled nanopores in amorphous carbon for energy and environment material applications |
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We study the nanovoid evolution in amorphous carbon structures during ion bombardment. The objective is to use these porous structures for energy and environment material applications.
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We show how nano-sand particles on the nanostructures of desert reptiles, like the boa snake or sandfish, act as nanobearings which protect the skin of these reptiles from excessive wear. |
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Dislocations attacking or generated near grain boundaries will lead to interface incompatibilities. Here, we investigate the role of interface incompatibility spectrum on interface toughness. |
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We conduct molecular dynamics simulation to understand the mechanisms of sonication induced cutting of single-walled carbon nanotubes, and compare these results directly with experiments. A new atom shooting fracture mechanism has been uncovered. |
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Nanobearing friction in nature |
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Evolution of Interface Incompatibilities and their role on Interface Toughness |
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Mechanisms of nanotube cutting by ultra-sonication |
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Project List |
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For more details, contact: Jin_Woo_Yi@brown.edu |
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For more details, contact: huck_beng_chew@brown.edu |
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For more details, contact: Sang-Pil_Kim@brown.edu |
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For more details, contact: chien-kai_wang@brown.edu |
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For more details, contact: Hsiao-mei_wu@brown.edu |
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For more details, contact: Michael_chon@brown.edu |