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 20 of 36 for “"Directed assembly"”.
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Directed assembly of functional patterns
… subprojects.<br/><br/>The BrainCHELL project (or Directed Assembly of Functional Patterns, DAFP) aimed at developing multichannel, high sensitivity, electrical testing apparatus for the study of micro-scale, network-like, assemblies of various organic and hybrid materials. A multiple …
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Directed Assembly of Three-Dimensional Microvascular Networks
The construction of 3-D microvascular networks enables microfluidic devices with unparallel geometric complexity. In one example, a 3-D microfluidic mixing device was demonstrated with square-spiral mixing towers isolated within the vascular network by a secondary photopatterning process. These …
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Characterization, modeling, and simulation of multiscale directed-assembly systems
… of matter over matter and energy altogether. Directed-assembly is an emerging field within nanoscience in which non-equilibrium system dynamics are controlled to produce scalable, arbitrarily complex and interconnected multi-layered structures with custom chemical, biologically or …
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DNA hybridization : fundamental studies and applications in directed assembly
Programmed self-assembly using non-covalent DNA-DNA interactions is a promising technique for the creation of next-generation functional devices for electronic, optical, and magnetic applications. This thesis develops the ability to tailor surfaces for the DNA-driven assembly of molecular, nano-, …
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Controlling structure across length scales with directed assembly of colloidal nanoparticles
… nanoparticle colloids, particularly those directed by sequence-specific DNA hybridizations, have emerged as a promising building block for producing these designer materials from nanoparticles that arrange themselves into precise symmetries through mechanisms analogous to atomic …
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Template-directed Assembly of Silk in Advanced Materials for Food Security
… to achieve complex materials, a template-based directed assembly approach is developed to guide hierarchical materials growth from disordered molecules all the way up to macroscale, a process hereby termed templated crystallization. Using silk fibroin as an example, templated crystallization …
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Chemistry directed assembly of multilayered polymer thin films and colloidal particles
… multilayered polymer thin films have been directed to different regions of a surface based on both electrostatic and secondary interactions between the polymer and the surface. This concept of adsorption directed by surface chemistry is universal, in that the same sets of rules derived for …
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Stop-flow lithography for complex particle synthesis and application in directed assembly
… ranging from tissue engineering to ceramics and assembly. Tuned assembly of anisotropic particles can give rise to macrostructures with complex morphologies. Externally applied fields like electric or magnetic fields are useful ways to tune the assembly of anisotropic particles. This thesis …
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Biological scaffolds for the peptide-directed assembly of nanoscale materials and devices
… provides a viable linear template for the directed synthesis of semiconducting and magnetic nanowires. Through further modification of the remaining proteins on the virus scaffold, other functionalities can be incorporated such as the directed patterning of the virus/nanowires assemblies …
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Total Synthesis of Oligomeric Cyclotryptamine Alkaloids
… The application of our diazene-directed assembly of enantiomerically enriched cyclotryptamines afforded a highly convergent synthesis of the pentameric alkaloid, allowing its detailed structural assignment. Highlights of the synthesis include the introduction of four quaternary …
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Total synthesis of cyclotryptamine and diketopiperazine alkaloids and biosynthetic pathway investigation of unsymmetrical diketopiperazine dimers
… C, and (-)-psycholeine through a diazene-directed assembly of cyclotryptamine fragments is described. Our synthetic strategy enables multiple and directed assembly of intact cyclotryptamine subunits for convergent synthesis of highly complex bis- and tris-diazene intermediates. …
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Nanoparticle Superlattice Processing: Monodispersed Building-Blocks & Single Crystal Films
… approach enables the precise organization and assembly of NCT units into macroscopic materials. By adjusting nanoparticle core sizes, polymer brush lengths, and molecular recognition groups, NCTs can be tailored to produce superlattices with controlled crystalline structures, lattice spacing, …
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Synthesis and alignment of gold nanorods for optical applications
… of patterned gold nanorods through shear and directed assembly.
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Total synthesis and anticancer evaluation of all known communesin alkaloids and related complex derivatives
… Synthesis of (-)-Communesin F Enabled by Diazene-Directed Fragment Assembly. The first biomimetic enantioselective total synthesis of (-)-communesin F based on a late-stage heterodimerization and aminal exchange is described. Our synthesis features the expedient diazene-directed assembly of two …
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Stimulated emission from biological materials and novel optical resonators for diagnostic and imaging applications
… resonator which can be fabricated from the directed assembly of a particle monolayer and is capable of producing hundreds or thousands of microlasers from a single pump beam. These optical resonators are based on an intra-cavity stabilization scheme which is well-suited for sensitive …
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Nucleic base-directed adsorption of colloids and polyelectrolytes
… and development of new approaches to the directed assembly of colloidal species. The ability to control the assembly from solution of complex and composite surface arrays by chemical patterning of surfaces is of great interest for the creation of nano- and micro-scale features without the …
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SERS-active peptide nanoparticles for investigating protein allostery and bionanoassembly
… addition of MDM2. The extent of nanoparticle assembly is altered following the introduction of various MDM2 binding ligands. This is the first study to report nanoparticle assembly through specific protein-peptide interactions which can be followed by SERS. This approach lends itself to the …
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DNA Driven Assembly at Solid and Liquid Interfaces
This thesis presents work on the DNA directed assembly of colloids at liquid and solid interfaces under specifically sculpted attractive interactions via depletion forces and/or magnetic fields. The highly specific and thermally reversible nature of binding between two complementary single strands …
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Carbon nanotube processing and chemistry for electronic interconnect applications
… thesis, several methods for the deposition and directed assembly of as-grown carbon nanotubes are examined. A metal/CNT-film structure is proposed as a relatively simple method to incorporate CNTs into an interconnect structure. Resistance comparisons between structures formed from films of Pd …
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