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 73 for “"photosensitive"”.
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Advancing Vat Photopolymerization of Photosensitive Polyimides: Process-Structure-Property Relationships
… a potential framework for the design of new photosensitive polyimide resins with tailored properties. It is also found that dimethyl esters of dianhydrides can be used in aromatic polyimide resin systems (specifically PMDA/ODA and PMDA/DDS) to adjust the acrylate content in what is termed the …
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Structure and Application of Photosensitive Self-assembled Pseudoisocyanine J-aggregates on Membrane Surfaces
Understanding the assembly of monomeric components into specific molecular motifs is a central theme in materials and surface engineering. Motif designs, specifically using a controllable template, can yield materials with desired optical or electronic properties. The objective of this thesis is to …
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Advances in experimental methods to probe surface relief grating formation mechanism in photosensitive materials
When azobenzene-modified photosensitive polymer films are irradiated with light interference patterns, topographic variations in the film develop that follow the electric field vector distribution resulting in the formation of surface relief grating (SRG). The exact correspondence of the electric …
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High open-circuit voltage in heterojunction photovoltaics containing a printed colloidal quantum-dot photosensitive layer
Within four to seven years, electricity generated from solar cells will cost less than grid electricity, making it the cleanest, cheapest, and most abundant energy source on the planet. The rise of solar energy, however, could come to an untimely end if current solar cell technologies fail to meet …
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MELANOPSIN AND PACAP IN INTRINSICALLY PHOTOSENSITIVE RETINAL GANGLION CELLS REGULATE THE DEVELOPMENT OF RETINOFUGAL PROJECTIONS IN MICE
In the retina, a small subset of retinal ganglion cells are intrinsically photo-sensitive (ipRGCs) and express the photopigment melanopsin and the neuropeptide pituitary adenylate cyclase-activating polypeptide (PACAP). These cells project to brain nuclei to mediate a variety of visual behaviors …
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Flame hydrolysis deposition of photosensitive silicate layers suitable for the definition of waveguiding structures through direct ultraviolet writing
This thesis presents the construction of equipment suitable for the fabrication of doped silicate layers through use of the Flame Hydrolysis Deposition technique. The subsequent optimisation of equipment and deposition processes has seen the realisation of fully dense amorphous silica layers doped …
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The testing of semiconductor-based adsorption modified photosensitive sensors for their response to a volatile organic compound, oxygen, humidity, and heating
Two thin-film sensors, composed of different thicknesses (approximately 0.5 microns and 4.5 microns) of a cadmium sulfide layer coated with Rhodamine B fluorescent dye on a glass substrate, were tested for change in photoconductivity due to exposure to different concentrations of gaseous organic …
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A feasibility evaluation of x-ray fluorescence emission tomography and x-ray luminescence tomography for real-time assessment of photodynamic therapy
… and acne treatment. Photodynamic therapy, uses a photosensitive compound activated by a specific wavelength photon to produce cytotoxic oxygen species (either in free radical form or in singlet form). However, weak penetration of visible, infrared, and UV light into the body to activate the …
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Design of Improved Polyester Dielectric Insulators for Electronic Packaging
… is elucidated. Lastly, a description of a new photosensitive copolyester dielectric insulator is presented.
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Umladen von Fremdionen beim Modifizieren von Glas mit UV-Laserstrahlung für das Farbmarkieren und Strukturieren
… changes of the optical and atomic properties in photosensitive lithium-aluminum-silicate glass and doped soda-lime glass are investigated with optical spectroscopy, time-resolved laser-absorption spectroscopy, x-ray fluorescence and x-ray absorption-near-edge spectroscopy (XANES) as well as …
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Inscription of in-fibre photonic devices by an infrared femtosecond laser
… are based on UV inscription in fibre with a photosensitive core. Despite the high quality of the gratings, a number of disadvantages are associated with UV inscription, in particular, the requirements of a photosensitive fibre, the low thermal stability and the need to remove the protective …
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Dimensional Control in Ceramics Printed by Projection Microstereolithography
… microstereolithography, a process in which a photosensitive resin is exposed to pixelated images to cure a single layer at once, is an attractive method due to its increased resolution compared to other additive manufacturing methods such as binder jetting. In order to better control the …
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Novel active waveguide devices in direct-bonded structures
… channel waveguides in an ion-exchanged buried photosensitive glass layer. Finally, operation of a single-mode channel waveguide laser in neodymium-doped photosensitive SGBN glass (based on a composition of silica, germania, boron, and sodium) is demonstrated, with propagation losses of < 0.3 dB …
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Antiviral activities of selected Chinese medicinal plants
… of action were carried out with the known photosensitive antiviral compound hypercin found in medicinal plants of the genus Hypericum (Hypericaceae). Three hypericin derivatives and five related quinones were tested in structure-activity relationship studies. The new derivative …
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Liquid crystallinity and alignment of ionic self-assembly complexes
… (DR = 18) is thermally stable. The investigated photosensitive (azobenzene-based) ISA complexes show formation of columnar LC phases. It was demonstrated that photo alignment of such complexes was very effective (DR = 50 has been obtained). It was shown that photo-reorientation in the …
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Drug Delivery Strategies Using Light Sensitive Molecules
… a hydrophilic molecule to the drug via a photosensitive linker, the permeability of the drug could be restrained. But the drug could be released at the site of the tumor after irradiating with UV light. To achieve this goal, we designed and synthesized a photosensitive drug conjugate that …
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BTB-Kelch Proteins and TAk1 Kinase N Immune Function
… expressed predominantly at muscles and several photosensitive organs. TAK1 is a member of MAPKKK. Deletion of TAK1 prevented the maturation of CD4+ or CD8+ single positive thymocytes, leading to reduction of T cells in peripheral tissues. Thymocytes lacking TAK1 failed to activate NF-κB and JNK, …
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Control of oligonucleotide conformation on nanoparticle surfaces for nanoscale heat transfer study
… of the antenna. Oligonucleotides modified with photosensitive molecules are conjugated with gold nanoparticles and report the temperature at their positions within some nanometers' distance from the particles. However, oligos have a known tendency to stick to gold surfaces. To locate the probes …
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