Characterization and Design of Functional Quasi-Random Nanostructured Materials Using Spectral Density Function
Journal of Mechanical Design, ISSN: 1050-0472, Vol: 139, Issue: 7
2017
- 44Citations
- 40Captures
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Article Description
Quasi-random nanostructures are playing an increasingly important role in developing advanced material systems with various functionalities. Current development of functional quasi-random nanostructured material systems (NMSs) mainly follows a sequential strategy without considering the fabrication conditions in nanostructure optimization, which limits the feasibility of the optimized design for large-scale, parallel nanomanufacturing using bottom-up processes. We propose a novel design methodology for designing isotropic quasi-random NMSs that employs spectral density function (SDF) to concurrently optimize the nanostructure and design the corresponding nanomanufacturing conditions of a bottom-up process. Alternative to the well-known correlation functions for characterizing the structural correlation of NMSs, the SDF provides a convenient and informative design representation that maps processing-structure relation to enable fast explorations of optimal fabricable nanostructures and to exploit the stochastic nature of manufacturing processes. In this paper, we first introduce the SDF as a nondeterministic design representation for quasi-random NMSs, as an alternative to the two-point correlation function. Efficient reconstruction methods for quasi-random NMSs are developed for handling different morphologies, such as the channel-type and particle-type, in simulation-based microstructural design. The SDF-based computational design methodology is illustrated by the optimization of quasi-random light-trapping nanostructures in thin-film solar cells for both channel-type and particle-type NMSs. Finally, the concurrent design strategy is employed to optimize the quasi-random light-trapping structure manufactured via scalable wrinkle nanolithography process.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85019260100&origin=inward; http://dx.doi.org/10.1115/1.4036582; https://asmedigitalcollection.asme.org/mechanicaldesign/article/doi/10.1115/1.4036582/383763/Characterization-and-Design-of-Functional; http://asmedigitalcollection.asme.org/mechanicaldesign/article-pdf/doi/10.1115/1.4036582/6401215/md_139_07_071401.pdf; https://dx.doi.org/10.1115/1.4036582; https://asmedigitalcollection.asme.org/mechanicaldesign/article/139/7/071401/383763/Characterization-and-Design-of-Functional-Quasi
ASME International
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