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 64 for “"Self-cleaning"”.
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Compact, Self-Cleaning Wet Electrostatic Precipitators
… In this project, we developed a new kind of air-cleaning system. Our design allows air to flow freely through wide gaps between wires, resulting in almost no pressure drop. To capture particles, we use a process called corona discharge, which gives particles an electric charge and pulls them …
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Highly Transparent, Self-cleaning, and Antireflective Nanoparticle Coatings
… goal of this research was to investigate the self-cleaning, antifogging, and antireflective behavior of low index of refraction silica nanoparticle films, with an ultimate goal to develop a method to deposit these films on glass substrates from aqueous solutions. </p> <p>The optical, wetting, …
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Epoxy Siloxane Self-Cleaning Coating using F64PcZn/TiO2 Photocatalyst Composite
… has been shown to yield a highly efficient self-cleaning coating. The composite, which makes greater use of light in the visible/near-infrared (NIR) region, was prepared by coating a nano-particle photocatalytic TiO<sub>2</sub> with 3% w/w of F<sub>64</sub>PcZn photosensitizer resulting in a …
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Titania-silica composite materials for self-cleaning applications on monumental stones
… process. The resulting nanomaterials give self-cleaning properties and create crack-free effective adhesive coatings for exterior stone surfaces. In addition, they improve the mechanical resistance of the stone. Another important advantage of these nanocomposites is that they substantially …
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A Thermohydraulic Mechanism Incorporated Modeling of Self-Cleaning Modular Helium Reactor
Made available in DSpace on 2017-07-06T18:59:37Z (GMT). No. of bitstreams: 3 Yun_Di_MS.pdf: 34942578 bytes, checksum: c45cadd377a5c657960ba9a77a8cae11 (MD5) Yun_Di_MS_ABS.pdf: 546311 bytes, checksum: 632fce2560c636a847910e14a5e5e7a4 (MD5) license.txt: 4813 bytes, checksum: …
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Design, fabrication and testing of a lateral self-cleaning MEMS switch
… This switch design is characterized by the self-alignment of the contact surfaces, self-cleaning of the particles generated from asperity fracture and deformation, and the anchoring method of the metal contacts in the micro switch structures and the large stroke piezo-actuation by the strain …
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Development of Au/TiO2/SiO2 photocatalysts and their application as self-cleaning and depolluting coatings for building materials
Actualmente, la contaminación del aire es uno de los principales problemas del mundo, por lo que hay un creciente interés en el desarrollo de tecnologías para su mitigación. El dióxido de titanio es un sólido con actividad fotocatalítica que ha mostrado tener capacidad para dotar a los materiales …
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The mitigation of crystallization fouling in a falling-film flow: A self-cleaning mechanism driven by flow and wetting behavior
… performance/product line interruption due to the cleaning routine. During regular cleaning and pre-or-pro anti-scaling treatment, commonly utilized hazardous chemicals not only add operational costs but also leave a significant environmental footprint, which potentially imposes harmful influences …
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Use phase performances of photocatalytic cements
… 21st century for their air pollutant removal and self-cleaning performance on civil infrastructure components. In this research, photocatalytic cement pastes were evaluated for NOx removal in a laboratory photoreactor while the self-cleaning performance of photocatalytic mortar specimens were …
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Fabrication of anti-reflective and imaging nanostructured optical elements
… known as functional materials: for example, self-cleaning/anti-fogging surfaces, and solar cells with increased efficiency. I fabricated a functional surface where both wetting and reflectivity are controlled by geometry. Using a periodic array of subwavelength-sized high aspect ratio cones, …
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Condensation heat flux measurements in ambient conditions on superhydrophobic nanostructured surfaces
… heat transfer, desalination, anti-icing and self-cleaning. Recently, superhydrophobic coatings have gathered attention with jumping droplets with the potential for self-cleaning applications and spot cooling on high powered applications. With new coatings being used on different materials, a …
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The effect of flower-like tatania towards characteristics and performance of polysulfone mixed matrix membrane
… for various application as the polymer itself offer versatile and attractive properties. However, due to strong hydrophobic nature of PSf property that create serious fouling problem to most of the separation process, thus modification of membrane by integrating strong hydrophilic …
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A study on wettability properties of rutile-phase TiO2 nanostructure film
… such as photocatalysis, solar cell and self-cleaning applications. This material can also be coated on glass surfaces, especially for car windows and building windows as well. Glass in the market nowadays, the material that coated on the glass weakens as time passes and harmful to the …
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Photocatalytic thin films: their characterisation and antimicrobial properties
… less than 380 nm TiO2 films can demonstrate self-cleaning and self-disinfecting properties. This is due to photocatalytic processes occurring on the film surface resulting in film superhydrophilicity and reactive oxygen species (ROS) production. These ROS and radicals readily oxidise organic …
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Characterizing anti-forensic attackers in cybersecurity domains with Stackelberg planning
… gap by applying Automated Planning to model a self-cleaning adversary within a state-based environment. Utilizing a Stackelberg planning framework, our methodology simulates a game-theoretic dynamic where a defender proactively modifies the environment and the attacker computes an optimal …
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Vibrating lubricant-infused porous surface for enhanced liquid droplet transport
… achieve complex fluids handling, anti-fouling, self-cleaning, anti-icing, and enhanced condensation heat transfer. In recent studies of droplet dynamics on SLIPS, it was observed that a moving droplet on the lubricant film follows lubrication theory and the Landau-Levich law — there is a zone of …
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Structural opportunities of ETFE (ethylene tetra fluoro ethylene)
… cladding materials. ETFE foil cushions are self-cleaning, highly transparent to light, resistant to weathering and can be manufactured in almost any shape and size. Incorporating ETFE into a building's cladding results in a more efficient and low maintenance structure. ETFE foil cushions are …
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Preliminary investigation of energy dissipation at culvert outlets using a riprap step
… to various culvert sizes and flowrates; (4) Self cleaning and requires low maintenance; (5) Able to re-establish natural flow conditions downstream of the outlet. Several model steps were constructed and tested. This thesis reviews the construction of all experimental equipment and the …
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Preliminary investigation of culvert outlet baffle block geometry and energy dissipation
… to various culvert sizes and flowrates; (4) Self cleaning and low maintenance; and (5) Re-establish natural flow conditions downstream of the outlet.;Several models were constructed and tested. This thesis reviews the construction of all experimental equipment and the development of a …
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Design & Fabrication of Super-Hydrophobic Surfaces by Laser Micro/Nanoprocessing
… plants have super-hydrophobic surfaces with self-cleaning effect. Taking inspiration from the surface properties of the lotus leaves, the ways to design and fabricate artificial super-hydrophobic surfaces on the most common used materials, including glass and metal substrates by laser …
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