About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
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Symposium
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Advances in Emerging Electronic Nanomaterials: Synthesis, Enhanced Properties, Integration, and Applications
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Presentation Title |
H-1: A Molecular Dynamics Study of Additive Nanomanufacturing:
Revealing Sintering Mechanisms
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Author(s) |
Dourna Jamshideasli, Shuai Shao, Masoud Mahjouri-Samani, Nima Shamsaei |
On-Site Speaker (Planned) |
Dourna Jamshideasli |
Abstract Scope |
Additive nanomanufacturing can deposit and sinter nanoparticles on a wide range of substrates, including flexible and/or biodegradable ones. Existing sintering prediction models are based on the dominating mechanism(s) in the sintering of particles of a few microns or larger. However, these models may not be directly applicable to nanoparticles due to their significantly higher surface-to-volume ratios which can give rise to different governing sintering mechanisms, which can be dependent on the size, misorientation, temperature, material type, and time. Predicting nanoscale sintering is therefore still a challenging problem. This research uses molecular dynamics simulations of spherical double-nanoparticles to see how the aforementioned parameters affect sintering mechanisms. By recognizing the particles that make up the neck area and tracing their motions as well vacancy distribution, an atomic-level understanding of sintering mechanisms is revealed. These simulations pave the way for a nanoscale version of Ashby's sintering diagrams to be created. |