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dc.contributor.advisorCórdova-Figueroa, Ubaldo M.
dc.contributor.authorDe La Cruz-Araujo, Ronal A.
dc.date.accessioned2019-06-14T13:50:15Z
dc.date.available2019-06-14T13:50:15Z
dc.date.issued2019-05-15
dc.identifier.urihttps://hdl.handle.net/20.500.11801/2473
dc.description.abstractThe aggregate sizes and morphologies formed with colloidal particles have important consequences on the rheological behavior of colloidal suspensions. Self- and directed-assembly are the most used phenomena to produce aggregates with controllable size and structure. On the other hand, the challenges focusing the actual technology requires better control and deep understanding of the aggregation phenomena at equilibrium and beyond it. Therefore, the design of colloidal particle interacting with anisotropic potentials—often known as Janus particles—arise as ideal candidates to advance in this direction. This dissertation sheds some light on the self- and directed-assembly of Janus particles suspensions with an introduction to the study of rheological properties of such systems through Brownian dynamics simulation. The colloidal particles are designed with amphiphilic, magnetic or catalytic Janus features subjected to a simple shear flow, a magnetic field, or to a single force (self-propulsion). Results show a richness structural behavior of Janus colloidal systems not observed with their isotropic counterparts. The different aggregate sizes and morphologies predicted as a function of interaction range, Janus patch size, interaction strength (i.e. Van Der Waals or magnetic interaction), shear rate, and self-propulsion strengths open new actuation routes for reconfigurable materials and applications.en_US
dc.description.sponsorshipThis research was supported by the National Science Foundation (NSF), CAREER Award (CBET-1055284); and partially by the Institute for Functional Nanomaterials (IFN) through an NSF grant (EPS-01002410).en_US
dc.language.isoenen_US
dc.subjectJanus Particlesen_US
dc.subjectRheology
dc.subjectMagnetic Janus particles
dc.subject.lcshNanoparticlesen_US
dc.subject.lcshMicrostructureen_US
dc.subject.lcshRheologyen_US
dc.subject.lcshSuspensions (Chemistry)en_US
dc.subject.lcshColloidsen_US
dc.titleMicrostructure and rheology of Janus particle suspensionsen_US
dc.typeDissertationen_US
dc.rights.licenseAll rights reserved
dc.rights.holder(c) 2019 Ronal A. De La Cruz Araujoen_US
dc.contributor.committeeAcevedo-Rullán, Aldo
dc.contributor.committeeCancelos, Silvina
dc.contributor.committeeHernández-Maldonado, Arturo
dc.contributor.representativePérez-Muñoz, Fernando J.
thesis.degree.levelPh.D.en_US
thesis.degree.disciplineChemical Engineeringen_US
dc.contributor.collegeCollege of Engineeringen_US
dc.contributor.departmentDepartment of Chemical Engineeringen_US
dc.description.graduationSemesterSpringen_US
dc.description.graduationYear2019en_US


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    Items included under this collection are theses, dissertations, and project reports submitted as a requirement for completing a degree at UPR-Mayagüez.

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