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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 11 of 11 for “"photoacid generator"”.
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Novel resist materials for next generation lithography
… resist has been developed via the addition of a photoacid generator and a crosslinker to a fullerene derivative. This thesis work presents a significant extension of the previous work. The resists have undergone comprehensive optimisation, and systematic characterisation of electron beam …
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Development and applications of acid degradable polymeric materials
… solvent. We demonstrate that by encapsulating a photoacid generator as a trigger, we can increase the internal local acid concentration and degrade these microcapsules using UV light (365 nm). The generation of high localized proton concentration inside the oil core is capable of degrading the …
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Mesoscale simulation of the photoresist process and hydrogel biosensor array platform indexed by shape
… these calculations led to aggregation of photoacid generator molecules in the photoresist, which was quantified. A serious limitation of mesoscale simulation is relatively long computation times. Thus, several efforts were made to improve the speed of the models. The advances of the …
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PH-responsive polymeric materials for encapsulation and triggered release
… polymerization. Encapsulation of a hydrophobic photoacid generator (PAG) in the core of the microcapsules demonstrated UV-triggered degradation.
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Biofunctionalised Coordination Cages and Quantified Speciation in Supramolecular Mixtures
… transferred to the whole system. Addition of a photoacid generator to the organo-gel formed triggered the reversible gel-sol transition of the material under alternating cycles of light irradiation and darkness. Finally, a water-soluble cage was synthesised using N-acetylatedgalactoamine …
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Electron beam lithography of molecular glass resist films prepared by physical vapor deposition
… between a base and the acid of an exposed photoacid generator was established, combinatorially optimized and high resolution features were demonstrated. The first chapter of this thesis covers the characterization of the utilized electron beam lithography tool Zeiss Leo1530 equipped with …
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Investigating New Guaiazulenes and Diketopyrropyrroles for Photonic Applications
… act as sensitizers of a UV-activated (< 300 nm) photoacid generator (PAG), via intermolecular photoinduced electron transfer (PeT), upon which the PAG undergoes photodecomposition resulting in the generation of acid. In a related study, the guaiazulene methyl group at C-4 was employed to study …
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Development and characterization of polyphthalaldehyde for transient applications
… well as thermoforming via hot press molding. A photoacid generator (PAG) was incorporated into cPPA films to generate acid within the film in response to exposure to UV light. Acid cleaved the polymer backbone of cPPA and resulted in solid state depolymerization into the monomer oPA. The …
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Development of Molecular Glasses for Solvent-Free Photolithography utilizing Combinatorial Vapor Deposition
… several components. One of these components, a photoacid generator (PAG), generates acid molecules when exposed to suitable wavelengths. In a post-exposure bake, the formed protons catalytically initiate reactions between the other resist components (chemical amplification). Investigations and …
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Sacrificial polymers for rapid manufacturing of bioinspired vascular materials
… (PPC) templates. PPC containing a latent photoacid generator (PAG) is melt-processed into fibers and filaments near 150 °C, which is easily depolymerized below the extrusion temperature after activating the PAG. This orthogonal trigger approach allows melt-extrusion into mechanically …
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Stimuli-responsive microcapsules for self-protecting and self-healing material systems
… properties are achieved by incorporating a photoacid generator (PAG) additive to the polymeric shell wall. Localized generation of acid leads to acid-catalyzed depolymerization of cPPA. The capsules rapidly release their core material in under a minute with only 30 s of UV exposure. The …