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Precision pipetting and crack-free colloidal assembly

Author(s)
Beroz, Justin(Justin Douglas)
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Other Contributors
Massachusetts Institute of Technology. Department of Mechanical Engineering.
Advisor
A. John Hart.
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MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission. http://dspace.mit.edu/handle/1721.1/7582
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Abstract
Applications involving millimeter and micrometer scale liquid handling combine precision instrumentation and capillary-driven fluid mechanics. This thesis develops two such applications. First, a design for a single handheld pipette that may draw and dispense liquid volumes spanning the range of an entire suite of current commercial pipettes is presented. The design, construction and validation of a proof-of-concept prototype device for this universal micropipette concept is reported, along with practical considerations for implementation and possible commercialization. Second, a direct-write method to build freestanding colloidal structures via capillary-driven self-assembly from a needle is reported. A scaling law is derived that governs the rate of assembly, as well as a criterion for the initiation of cracks, thereby explaining how to build crack-free structures over a wide range of particle sizes.
Description
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2019
 
Cataloged from PDF version of thesis.
 
Includes bibliographical references (pages 137-139).
 
Date issued
2019
URI
https://hdl.handle.net/1721.1/122132
Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Publisher
Massachusetts Institute of Technology
Keywords
Mechanical Engineering.

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