Self-assembly of Janus Magnetic colloids with radially shifted dipole

dc.contributor.advisor Córdova-Figueroa, Ubaldo M. Victoria-Camacho, Jonathan College of Engineering en_US
dc.contributor.committee Cancelos-Mancini, Silvina
dc.contributor.committee Araya-Martin, Guillermo
dc.contributor.department Department of Mechanical Engineering en_US
dc.contributor.representative Morales-Velez, Alesandra 2019-08-12T15:47:35Z 2019-08-12T15:47:35Z 2019-07-11
dc.description.abstract The self-assembly Janus Magnetic colloids with radially shifted dipole are stud- ied using Brownian dynamics simulations, by is using a quasi-two-dimensional sys- tem. The properties and behavior of the process of particle-particle and cluster- cluster aggregation are quantified for several dipolar shifts (s) and examined under different dipolar coupling constant parameter (λ). Properties such as the mean clus- ter size, orientational ordering, and nucleation and growth are examined dynami- cally. Seven different clusters regions have been found, these regions are dependent on the relation between λ and s. Furthermore, five of this seven structures are formed through three different types of aggregations, for high λ: First, the Lin- ear Aggregation (small s), with building block doublet (head to tail aggregation), Single-Chain and Loop-Like region. Second, the Bidirectional Aggregation (inter- medium s), with building blocks triplet (triangular arrangement, acute angles) and quartets (square arrangement), the particles tend to form a cluster with bidirec- tional growing forming compact clusters, Island Region. Third, the Double Chain Aggregation (high s, s ≥ 0.65), with building blocks triplet (triangular arrangement, obtuse angles) and quartets (parallelogram arrangement), it′s characterized by ori- ented growth, the cluster form a double-chain structure with the magnetic surface at the center, Worm-Like and Antiparallel-Double-Chain region. The other two cluster regions occurs for low λ and are shorts cluster characterized by an inability to grow: Short-Life-Cluster (low and intermedium s) and Triplets (high s, s ≥ 0.65) region. en_US
dc.description.graduationSemester Summer en_US
dc.description.graduationYear 2019 en_US
dc.description.sponsorship This project was supported by the National Science Foundation under Awards NSF-CBET 1705656 and NSF-HDR CREST IDEALS 1547830. en_US
dc.language.iso en en_US
dc.rights.holder (c) 2019 Jonathan A. Victoria-Camacho en_US
dc.subject Self-Assembly en_US
dc.subject Janus en_US
dc.subject Magnetic Colloids en_US
dc.subject Dynamic Aggregation en_US
dc.subject.lcsh Colloids en_US
dc.subject.lcsh Dipole moments en_US
dc.subject.lcsh Brownian motion processes en_US
dc.title Self-assembly of Janus Magnetic colloids with radially shifted dipole en_US
dc.type Thesis en_US
dspace.entity.type Publication Mechanical Engineering en_US M.S. en_US
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