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 33 for “"Spray Coating"”.
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Novel Biodegradable Poly (Glycolic Acid) Dual-Layer Packaging System Using Spray Coating
… nanofibril (CNF)-reinforced paper substrate spray-coated with a poly(glycolic acid) (PGA) outer layer is designed to enhance barrier performance. The approach involves spray coating CNF onto the paper substrate to effectively fill surface pores, followed by an additional spray coating of PGA …
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Microwave Overlay Capacitor Fabrication on Printed Circuit Boards
… cyclic olefin copolymer (COC) was adapted for spray coating, while a new recipe based on poly methyl methacrylate (PMMA) was designed for spray coating. To complete the capacitors, a metal layer was deposited using a Voltera V-One printer with the Elegant Eel conductive ink of thickness 120 𝜇𝑚. …
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The Adhesion Strength of a Plasma Sprayed Silicon Bond Coating on a Silicon Carbide Ceramic Matrix Composite
… turbine engines. Environmental barrier coatings (EBCs) are essential for implementing these components as they insulate and protect the substrate from reaction with water vapor in the engine environment. EBCs are typically deposited via atmospheric plasma spraying (APS) and preparing the …
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Two-dimensional material inks and composites for printed electronics and energy
… layered materials. In Chapter 3 I present the coating and printing techniques which were used in this thesis along with the experimental techniques and methods which I use to characterise my inks, films and devices. Chapter 4 is the first experimental chapter of the thesis and demonstrates the …
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Smoothing silver nanowires for optoelectronic applications
… the high aspect ratios limit their final use. Spray coating is a technique that is widely used in many industries and has proven effective in many coating applications but continues to be limited by drying defects when used traditionally. A simple modification; pulsed spraying can decouple …
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Graphene-based wearable textile-triboelectric nanogenerators and biokinetic sensors [Nanogeneratori triboelettrici tessili indossabili a base di grafene e sensori biocinetici]
… indossabili, è stata ottimizzata una tecnica di spray-coating, utilizzando uno strato adesivo di alcool polivinilico (PVA) per ottenere una deposizione uniforme e durevole degli elettrodi. Gli elettrodi tessili a base di grafene risultanti hanno dimostrato un’eccellente conducibilità elettrica, …
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Fabrication and analysis of CIGS nanoparticle-based thin film solar cells
… non-traditional fabrication processes, such as spray-coating for the low-cost and highly-scalable production of CIGS-based solar cells. CIGS nanoparticles were synthesized and analyzed, thin CIGS films were spray-deposited using nanoparticle inks, and resulting films were used in low-cost …
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Self-Powered Wearable Sweat Monitoring using 2D WS2 Textile Integrated Triboelectric Nanogenerators for Future Personalized Healthcare
… onto fabrics using three methods: ultrasonic spray coating, drop casting, and immersion. Among these, spray coating emerged as the optimal technique due to its superior film uniformity, reproducibility, and mechanical robustness under flexural strain. This approach enabled the creation of …
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Natural carbonaceous materials for use in transparent Joule heaters
… made into thin films using both rod-rolling and spray-coating methods. After the superior uniformity of the rod-rolled films was observed, a 2 laser cutter was used to anneal the rod-rolled films with the intention of increasing their sp² content and thus improving their conductivity. First the …
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The use of silicone resins as non-wetting files on heating surfaces
The effect of a single spray coating of 60.9% D.C. 801 silicone resin, with a 0.3% cobalt on the dry resin basis, on (1) the initial overall heat transfer coefficient, (2) the overall heat transfer coefficient under accelerated scale forming conditions, and (3) the corrosion resistance of 1.5” o.d. …
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Synthesis and characterization of graphene-based dispersions for neurocompatible electrodes
… Se usaron técnicas de deposición como spin coating, spray coating, electrospinning y plasma frío para crear películas delgadas. La parte experimental se centra en la síntesis de GRMs, incluyendo óxido de grafeno (GO), óxido de grafeno reducido (r-GO) y grafeno exfoliado en fase líquida …
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Spray coated bentonite/MWCNT composite enzymatic biosensor for uric acid detection
… carbon nanotubes (MWCNTs) fabricated via spray coating. The composite utilizes the high conductivity and surface area of MWCNTs along with the ion-exchange capacity and antifouling properties of BT to improve both electron transfer and long-term stability. Uricase (UOX) was immobilized on …
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The influence of contact line dynamics on drop deposition, repellency, and condensation.
… including inkjet printing, water harvesting, and spray coating technologies. In a solid-liquid interface, when a droplet is placed on a solid substrate, the boundary between the solid, the liquid, and the corresponding equilibrium vapor is referred to as the "contact line," which play a crucial …
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Polymeric Transcatheter Heart Valves
… A manufacturing method involving the spray coating of polyurethane solutions onto valve moulds, pre-coating a TAVI stent with a polyurethane of higher durometer, and subsequently spraying the combination of the stent and the mould to form integral attachments of the leaflets, is …
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Development of low-temperature solution-processed colloidal quantum dot-based solar cells
… device, three QD deposition techniques (spin coating, dip coating, and spray coating) were first experimented in order to prepare high-quality QD thin film for the photovoltaic application. The device was based on the heterojunction formed between dip-coated PbS QD layers and CdS thin film …
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Technology and applications of 2D materials in micro- and macroscale electronics
… such as sensing in a microfluidic channel or spray-coating SynCells on arbitrary surfaces.
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Manufacture of metal-based nanoparticles and their incorporation into plastic materials for the development of active antimicrobial food packaging
… films via solvent casting, extrusion or coating techniques. The resulting films were assessed in terms of their mechanical, thermal, barrier and antimicrobial properties. Surface modification of commercial polymer films using piranha solution or UV/ozone treatment was carried out to …
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Starch based systems for the colonic delivery of bioactive peptides
… in starch through multiple approaches based on spray coating, co-spray drying and gel entrapment. A simple approach based on gel entrapment was the most successful and it was shown in vitro to be capable of protecting a portion of the entrapped nisin during transit in the upper GI tract. Using a …
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Electrical Breakdown of Thermal Spray Alumina Ceramic Applied to AlSiC Baseplates Used in Power Module Packaging
Thermal spray coatings offer new alternatives in the production of electronic power modules that use alumina ceramic as an isolation layer. Current processes use direct bond copper (DBC) soldered to a nickel plated copper heat spreader. A coefficient of thermal expansion (CTE) mismatch exists …
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