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 19 of 19 for “"3D nanostructures"”.
-
Designing and Fabricating 3D Nanostructures through Directed Self-Assembly of Block Copolymers
Intricate designs of 3D nanostructures are needed in different research areas. Our current techniques for fabrication of 3D structures are limited by either length scale or efficiency. Compared to the conventional methods such as ‘top-down’ lithography, self-assembly of block copolymer (BCP) …
-
Three-dimensional nanofabrication by electron-beam lithography and directed self-assembly
… this thesis, we investigated three-dimensional (3D) nanofabrication using electron-beam lithography (EBL), block copolymer (BCP) self-assembly, and capillary force-induced self-assembly. We first developed new processes for fabricating 3D nanostructures using a hydrogen silsesquioxane (HSQ) and …
-
Three-dimensional nanostructure determination based on scanning electron nanodiffraction
… phases, composition, three-dimensional (3D) grain morphology, orientation and distribution, which can only be obtained from a 3D structure determination, which is an outstanding challenge in crystallography. A diffraction based technique is developed here for the determination of 3D …
-
Proximity Field Nanopatterning, Its Optics and Applications
New techniques for three dimensional (3D) nanopatterning have been an active field of research to comply demanding complex structures and nanoscale sizes of proposed ideas and potential applications; conventional photolithography and other nanopatterning methods are useful for some of them, still, …
-
Laser assisted nano-optics processing in optical data storage
… are presented to show their capabilities in nanostructures fabrication. Laser irradiation through microlens array is used to create nanostructures on phase-change films over a large area. Phase-change nanolithography is developed based on the microlens array patterning followed by wet …
-
Fabrication and Characterization of Three-Dimensional Magnetic Nanostructures
… improving the understanding and control of 3D nano-printing of cobalt nanostructures using Focused Electron Beam Induced Deposition (FEBID), improving the performance of synchrotron-based magnetic X-ray microscopy in 3D geometries and adapting existing magneto-optical techniques to rapidly …
-
Kinematic and dynamic modeling of Nanostructured Origami
… folds nanopatterned thin films into a desired 3D shape. This process extends the properties of 3D design and connectivity found in origami artwork to the bulk fabrication of 3D nanostructures. Our technique is a two-step procedure that first patterns the devices in 2D and then folds the …
-
Three-dimensional nanofabrication with elastomeric phase mask
… techniques for fabricating three-dimensional (3D) nanostructures with diverse structural layouts. The approach, which we refer to as proximity field nanopatterning (PnP), uses conformable, elastomeric phase masks to pattern thick layers of transparent, photosensitive materials in a conformal …
-
Design And Optimization Of Nano-optical Elements By Coupling Fabrication To Optical Behavior
… tools, it was predicted and demonstrated that 3D nanostructures may be formed on a standard mask aligner. A space-variant photonic crystal filter was designed and optimized based on a simple fabrication method of etching holes through hetero-structured substrates. It was found that hole taper …
-
Three-dimensional nanostructures fabricated by stacking pre-patterned monocrystalline silicon nanomembranes
… to enable the fabrication of three-dimensional (3D) nano-structured materials. Sequentially stacking previously-patterned membranes to build up 3D nanostructures, e.g. photonic crystals, is a powerful technique that decouples serial patterning processes from 3D assembly, allows the incorporation …
-
Design of 3D Complex Nanostructures Using Block Copolymer Self-Assembly
… pursuit of designing high quality complex nanostructures is required by the modern nanotechnology. However, the conventional 'top-down' lithography is limited by the rapidly increasing cost and difficulty when operating on length scales below 20 nm. As an alternative, block copolymer (BCP) …
-
Metal-assisted chemical etching of β-gallium oxide
… community. Fabricating high-aspect-ratio β-Ga2O3 3D nanostructures without surface damage is essential for next-generation power electronics. Nonetheless, dry etch typically damages the surface due to high-energy ions, while most wet etching techniques can only produce very limited aspect ratios. …
-
Subwavelength nanostructures for optical biosensing and rapid photochemical reactions
… on the experimental examination of the use of nanostructures for three topics of light-matter interaction. First, enhanced photon absorption for photocatalytic reactions has been demonstrated. Photocatalytic metal nanoparticle synthesis is of significant interest in plasmonic biosening due to …
-
Electron beam processing and spectroscopic characterisation of 2D materials and novel nanostructures
… growth of fully realised three-dimensional (3D) nanostructures, selective surface termination, defect generation and real-time imaging of chemical reaction fronts. The aim of this project was to elucidate experimentally the fundamental processes that govern the chemical reactions occurring …
-
Self-assembly of three-dimensional nucleic acid nanostructures
Patterning complex 3D features at the nanoscale offers potential applications for a wide range of fields from materials to medicine. While numerous methods have been developed to manipulate nanoscale materials, these methods are typically limited by their difficulty in creating arbitrary 3D …
-
Nanoscale investigation of silk proteins using near-field optics
… been visualized, guiding the creation of novel 3D nanostructures using Electron Beam Lithography (EBL). Meanwhile, the dual-tone structural formation of silk structures under ion beam irradiation have been thoroughly investigated, resulting in the “Protein Lego” manufacturing paradigm. The UV …
-
Flexible nano-memory device by zinc oxide nanorod arrays
… to provide desired nanomaterials and nanostructures, the effect from substrate roughness is the key to grow well-aligned three-dimensional (3D) ZnO nanostructures for fabricating patterned nano-memory. Second, because the performance of device is closely related to the material’s …
-
MOVPE metamorphic lasers and nanostructures engineering at telecom wavelengths
… bunched ordering) promoted three-dimensional (3D) features formation under certain growth temperatures and for certain percentage of indium in the QWs. To avoid and control the 3D nanostructuring we proposed as a possible solution the insertion of a GaAs layer deposited before the QW. Moreover, …
-
Fabrication of Hybrid Optical Electrical Platforms for Potential Applications in Neuromodulation
<p>State-of-the art neuromodulators are bulky, and they are mostly fabricated on rigid substrates. Furthermore, they are not provided with a feedback control loop re- sulting in undesired off-target effects. This thesis paves the way for fabrication of lightweight neural interfaces with the …