Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Capillary breakup"”.
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Capillary breakup of Discontinuously Rate Thickening Suspensions
… Rate Thickening Suspensions (DRTS) in capillary breakup, where a thin suspension filament breaks up under the action of surface tension forces. We performed experiments with 55% by weight suspension of cornstarch in glycerol. To minimize the effect of gravity on the experiments, we …
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Effects of polymer concentration and molecular weight on the dynamics of visco-elasto-capillary breakup
Capillary-break-up measurements of viscoelastic polymer solutions are performed using a Capillary Breakup Extensional Rheometer (CABER). The device consists of two coaxial plates which are used to form and hold a liquid bridge of the test fluid. An axial step strain is applied to the fluid by …
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Rheological characterization of lubricants in automotive industries through development of a novel capillary breakup extensional rheometer
… deformation rates. The experimental technique of capillary thinning is utilized for characterizing the fluids and an improved design of the Capillary Breakup Extensional Rheometer (CaBER) is introduced. The new instrument features higher resolution and faster sampling of the laser micrometer …
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Mini-Portable Rheometer: A device for the on-site rheological characterization of viscoelastic fluids
… field. First, we investigated the sensitivity of capillary breakup measurements, the method chosen for measuring elasticity, to initial stretch parameters in using the commercial, Capillary Breakup Extensional Rheometer (CaBER), using analog polymer solutions. Finally, our study highlighted the …
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Multimaterial fiber electronics
… (poling, annealing, injection, coating, capillary breakup), enable the making of novel in-fiber, stand-alone-fiber and fiber-array devices. In this thesis, we demonstrate a wide variety of novel multimaterial fiber capabilities at all these levels, focusing specifically on new electronic …
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Phase separation in thermally-drawn fibers: From porous domains to structured Si-Ge spheres
… within a silica cladding by inducing capillary breakup of a continuous Si-Ge core fiber in a strong axial thermal gradient. The thermal gradient causes a "kinetic phase separation" of the alloy, leading to structured Janus particles.
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Nonlinear evolution of annular layers and liquid threads in electric fields
… the effect of the radial electric field on jet breakup is developed, Two canonical regimes are identified that depend on the size of the gap between the outer electrode and the unperturbed jet surface. For relatively large gap sizes, long waves are stabilized for sufficiently strong electric …
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Advanced Rheological Characterization of Nanofilled Materials for Automotive Applications
… part of this thesis, an improved version of capillary breakup extensional rheometry (CaBER) is presented, with a special focus on quantifying the filament thinning dynamics which are governed by multiple contributions to the total tensile stress in the fluid. An Inelastic Rate-Thickening …
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The linear and nonlinear rheology of multiscale complex fluids
… extensional rheology techniques such as Capillary Breakup Extensional Rheometry (CaBER), Filament Stretching Extensional Rheometry (FiSER) and an Optimized Shape Cross-slot Extensional Rheometer (OSCER). Due to their ubiquity in industrial applications as well as in biologically relevant …