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.
Results
Showing 1 to 13 of 13 for “"3D photonic crystals"”.
-
LARGE AREA 3D PHOTONIC CRYSTALS WITH EMBEDDED WAVEGUIDES
… and repeating arrangement of atoms or molecules. Photonic crystals are structures with periodic variations in the dielectric constants that manipulate and control the properties of light propagation. Photonic crystals are analogous to semiconductor crystals with periodic potentials that are …
-
Three-dimensional photonic crystal optoelectronics
Photonic crystals are a class of synthetic materials which can control the absorption, emission and propagation of light to an unprecedented degree. In order to fully utilize their properties defect must be added to photonic crystals to direct the flow of light, and light emitting structures must …
-
Novel advancements in nanofabrication for photonic crystal applications
The progress of large-area 2D- and 3D-photonic crystals (PCs) at optical and near infra-red frequencies has been limited by fabrication challenges. Periodic nanostructures must be patterned in high-index and crystalline material such as silicon over large areas (mm² to cm²) with reasonable …
-
Optical studies of photonic crystals and high index-contrast microphotonic circuits
Both high index-contrast (HIC) photonic crystals and HIC microphotonic circuits are presented in this thesis. Studies of macro-scale 2D photonic crystal meta-materials are first described. Through comparison of experimental and theoretical beam evolution about the super-collimation frequencies, the …
-
Novel Inorganic Photoresists for Three-Dimensional Microfabrication
… directly patterned in three dimensions via both 3D laser direct writing and 3D interference lithography based fabrication approaches are attractive materials for the fabrication of complex microfluidic and micro-optical components such as chaotic mixing elements or 3D photonic crystals. Several …
-
Design of multidimensional microplasma array for biofilm removal and dynamic photonic crystals
… opens new and unique avenues for electronic and photonic devices. To advance this unique ability for dynamic functional materials, this thesis focuses on designing and realizing of multidimensional periodic structures of microplasma arrays and understanding their interactions with biofilms and …
-
Novel Approaches to Discovery and Optimization in Physics: Symbolic Regression, Bayesian Optimization, and Topological Photonics
… problems including topology optimization of photonic crystals and chemical property optimization of molecules. On these complex tasks, my method is able to outperform more commonly used surrogate models and improve optimization in terms of both sampling efficiency and computational cost of …
-
Three-dimensional metallic architectures for photonic and energy storage applications
… polymeric materials, however, three-dimensional (3D) metallic materials are far less studied and especially interesting for photonic and energy storage applications. Sacrificial templates are commonly used for the fabrication of materials possessing 3D structure. Self-assembly is particularly …
-
Design and Synthesis of Nanomaterials for Surface-Enhanced Raman Scattering, Fuel Cell Technology, and Photonics
… replacement reaction between PtCl62- and Pd nanocrystals with well-defined shapes including octahedra, nanocubes, and nanorods. The resultant hollow Pd-Pt bimetallic nanostructures were employed as electrocatalysts for the oxygen reduction reaction: ORR). Our results demonstrated that the …
-
Colloidal and Polyelectrolyte Inks for Direct -Write Assembly of 3D Periodic Structures
… were developed for the direct-write assembly of 3D periodic structures with varying feature size. Specifically, two ink designs were pursued: (1) a model colloidal ink (feature size > 100 mum) and (2) a polyelectrolyte ink (feature size ∼ 1 mum). The rheological properties of both inks were …
-
Design of multidimensional nanophotonic materials with improved performance and functionalities
Multi-dimensional (2D and 3D) architectures with characteristic feature sizes on the order of a micrometer and below can exhibit extraordinary properties that are not present in their non-structured counterparts. Of particular interest are 3D microstructures, which have been found promising due to …
-
Assembling 3D MEMS structures by folding, aligning and latching 2D patterned films
… retro reflectors, micro-scale magnetometers, 3D microfluidic systems and 3D photonic crystals, require three-dimensional (3D) geometries for their functionality. In addition, 3D circuits have also emerged as a way of improving connectivity and reducing power dissipation in electronic chips. …
-
Three-dimensional periodic structures for enhancing light-matter interaction and energy storage
Three-dimensional (3D) periodic architectures hold great promise for applications ranging from manipulating the flow of light for integrated photonics to high power and high energy batteries. Among the approaches to fabricate 3D meso-structured materials, colloidal self-assembly and holographic …