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James Stahley - Master's Thesis.pdf (4.23 MB)

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Investigation of Self-Assembly and Thermal Transport in Multifarious Colloidal Constructs

Stahley, James Brian
http://orcid.org/0000-0003-2003-2694
http://rave.ohiolink.edu/etdc/view?acc_num=miami1633076382132356

Abstract Details

2021, Master of Science, Miami University, Mechanical and Manufacturing Engineering.
Programmed self-assembly provides a promising platform toward the design of functional metamaterials through tunable surface interactions of colloidal particles. Recent studies demonstrated experimental fabrication of novel microstructures through spontaneous solution-based self-assembly. These processes enable the desirable placement of a wide variety of building blocks into nanoengineered structures with tunable material and transport properties. The vast majority of self-assembled structures presented in concurrent literature are historically limited to basic or binary classifications consisting of only one or two types of distinctly interacting building blocks. Recent developments in linker-mediated assembly processes allow for interactions to be coordinated between many different types of colloidal particles more easily and with fewer unique sequences than direct hybridization. However, the dynamics of programmed self-assembly becomes increasingly more complex when coordinating interactions between three or more distinct interacting elements. In such cases particle pairs with similar binding energy are allowed to interact unpredictably, and enthalpically degenerate binding sites will be noticeably more present while numerous secondary phases may also result from the self-assembly process. Therefore, it is necessary to develop procedures for predicting feasible superstructure geometries for these systems before they can be implemented in material design. This thesis presents molecular dynamics simulations and thermodynamic free energy calculations of self-assembled colloidal structures. These results provide direct guidelines for designing multifarious colloidal structures from three or more types of building blocks and motivate new directions for future experimental work to target formation of multi-component colloidal superstructures beyond the well-established binary symmetries studied in the past. Phononic and thermal transport properties of self-assembled nanomaterials are also investigated in this work. The tunable microstructural features afforded by programmable self-assembly processes that directly govern energy carrier mechanisms, make self-assembled structures particularly appealing for length scale dependent heat management applications. Fully atomistic molecular dynamics and lattice dynamics simulations are presented and demonstrate the dependence of thermal conductivity and phonon transport on various key features of nanocrystalline colloidal structures.
Mehdi Zanjani (Advisor)
Andrew Paluch (Committee Member)
Carter Hamilton (Committee Member)
68 p.
Materials Science
Colloidal Self-Assembly, Thermal Transport

Recommended Citations

Citations

  • Stahley, J. B. (2021). Investigation of Self-Assembly and Thermal Transport in Multifarious Colloidal Constructs [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1633076382132356

    APA Style (7th edition)

  • Stahley, James. Investigation of Self-Assembly and Thermal Transport in Multifarious Colloidal Constructs. 2021. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1633076382132356.

    MLA Style (8th edition)

  • Stahley, James. "Investigation of Self-Assembly and Thermal Transport in Multifarious Colloidal Constructs." Master's thesis, Miami University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=miami1633076382132356

    Chicago Manual of Style (17th edition)

miami1633076382132356
108
© 2021, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.
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