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 14 of 14 for “"direct laser writing"”.
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Thermo-responsive and electroconductive shape-memory polymer composites for useful applications
… polymers (CPs) have been produced via direct laser writing or multiphoton fabrication (using a Photonic Nanoscribe). The modified SMPs will be reported for the first time, in addition, their properties are investigated and prove insightful for potential applications of these materials.
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Engineering and characterizing light-matter interactions in photonic crystals
… for fabricating photonic crystals, including direct laser writing, interference lithography, colloidal deposition, and chemical vapor deposition. The angle-resolved characterization of photonic crystals is performed on fluorescent photonic crystals that exhibit uniquely photonic effects, which …
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Three-dimensional metallic architectures for photonic and energy storage applications
… a more advanced template fabrication technique, direct laser writing, in combination with electrodeposition for chiral metamaterial applications.
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Assembly of Structures using Optical Tweezers
… have been studied, including approaches such as direct laser writing, direct ink writing, self assembly, and numerous others. While several of these platforms do pose unique advantages or abilities, very few approaches have the ability to efficiently fabricate three-dimensional (3D) structures …
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Spectrum management for high efficiency photonic devices
… multi-level textures was fabricated using 3D direct laser writing on photoresist. The fabricated samples were optically characterized and potential modifications to achieve even higher efficiencies were pointed out. Further, this thesis demonstrated a new display architecture that can …
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Paviršinių difrakcinių elementų optimizavimas ir formavimas femtosekundiniais UV lazerio impulsais /
… and high costs. With the advancement of laser technologies and the availability of femtosecond solid-state lasers, these lasers can be applied to the formation and processing of various microstructures. The radiation from such lasers has a Gaussian intensity distribution, resulting in …
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Co-Assembly Of Nanostructured Hybrid Materials For Energy Applications
… triblock terpolymer was employed to structure-direct alumina sol to form mesoporous block copolymer (BCP) directed alumina superstructures. In situ grazing incidence wideangle X-ray scattering and scanning electron microscopy were utilized to probe the structural evolution of methylammonium …
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HIGH PERFORMANCE NANOPHOTONIC CAVITIES AND INTERCONNECTS FOR OPTICAL PARAMETRIC OSCILLATORS AND QUANTUM EMITTERS
… range of a high-quality on-chip (or off-chip) laser source to new wavelengths. However, parasitic effects normally limit the output power and conversion efficiency of χ(3)microring OPOs. This issue is resolved by using a microring geometry with strongly normal dispersion to suppress parasitic …
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Creation of 3-dimensional micro-optical materials
… is in its spectral emission and absorption, in directional control through waveguides, or in its ability to propagate through a material at all. This dissertation will cover a variety of topics in this domain. Chapter 1 will be a brief overview of how light behaves in response to structures at …
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Materials and processes for the optical additive manufacturing of advanced organic/inorganic nanocomposites for the mask-less plating of insulator and semiconductor substrates, and microfluidic devices
… the vat photopolymerization category, namely the Direct Laser Writing (TP-DLW). This technique exploits the optical, nonlinear multiphoton absorption process, and allows for the fabrication of 3D objects featuring details below the diffraction limit, down to 100 nm or even less. Here, this …
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Subsurface two-photon lithography: improvements and applications
… is implemented with a porous material as the writing medium, allowing different densities of photoresist to be created within. Thus, with SCRIBE, a variety of gradient index (GRIN) optical devices can be fabricated. In this work, we explore the challenges with applying SCRIBE-written optics as …
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Nanolithography and nanoscopy methods for the study of biological samples in confined spaces
… implemented to demonstrate the usage of 2-photon direct laser writing for the fabrication of master molds of nanofiltration chips. The system was characterized and its nanolithography capabilities, using electron microscopy and atomic force microscopy, evaluated. The fabrication process is …
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Advancing optical interconnects: Exploring low-loss 3D photonic waveguides, loop mirrors, and distributed Bragg reflectors
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01