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.
Results
Showing 1 to 20 of 24 for “"Conformal coating"”.
-
Analysis and improvements of an acrylic conformal coating process
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1997.
-
Design and qualification of a robust polyurethane based conformal coating process for sodimms
<p>Conformal coatings protect printed circuit board assemblies, including the electronic components that the assemblies are populated with. A variety of materials and application methods can be used to conformally coat assemblies. The process setup is crucial to repeatable process reliability. The …
-
Super-conformal coating and filling of high aspect ratio recessed structures by two-molecule CVD
… For structures with straight sidewalls, uniform coating methods – including chemical vapor deposition (CVD) or atomic layer deposition (ALD) – typically form a void or region of low density (seam) along the centerline of the feature because the transport of precursor molecules to the bottom …
-
Immunoisolation Approaches for Islet Transplantation
… graft outcome. Immunoisolation of islets by conformal coating has the potential to maximise the diffusion of vital molecules and minimise the graft volume, enabling transplantation to preferred sites.<br/>Using allogeneic islets implanted at the kidney subcapsular site it was found that …
-
Applications of nanoimprinted structures to organic photovoltaics
… for OPVs is presented which is based on a conformally-coated, subwavelength-textured substrate design which is intended to substantially increase optical path lengths. The subwavelength nature of these Nanocones/Nanowedges decouples the light propagation from the exciton diffusion path. …
-
Layer-by-layer assembly of conducting membranes for photoelectrochemical cells
… control the film morphology, generating either a conformal coating around each wire or a bridging film across the top of the array. Multilayer transfer printing is used to merge together separately assembled free-standing membrane/microwire assemblies into a single functional film. This technique …
-
Development of Solution-Processed Stable Silver Nanowire Networks for Transparent Electrodes
… A second process is developed towards forming a conformal coating on AgNWs based on nanosized RGO, leading to enhanced all-around stability. A flexible transparent film heater was thus made, demonstrating its exceptional stability under harsh conditions. It is expected that the processing …
-
CREEP CORROSION OVER PLASTIC ENCAPSULATED MICROCIRCUIT PACKAGES WITH NOBLE METAL PRE-PLATED LEADFRAMES
… on the lead versus the mold compound surfaces. Conformal coating was identified as an effective mitigation strategy to eliminate creep corrosion on noble metal pre-plated leadframe packages.
-
INVESTIGATION OF PROCESSING-STRUCTURE-PROPERTY RELATIONS IN VAPOR PHASE MODIFIED CELLULOSIC MATERIALS
… gas molecules as precursors to realize surface coatings with better uniformity and consistency amongst batches. Atomic layer deposition (ALD) technique can be conducted at relative lower reaction temperatures (25 – 300 ℃) and realize a conformal coating on substrates with high aspect ratios. …
-
Flexible Mems: A Novel Technology To Fabricate Flexible Sensors And Electronics
… isotropic silicon etching and parylene conformal coating, which is able to monolithically incorporate high temperature materials and fluidic channels, was developed at Wayne State University.</p> <p> The technology was first implemented in the development of out-of-plane parylene …
-
Development of orthogonally crosslinked thiol-ene hydrogels for encapsulation of pancreatic beta-cells
… achieve this goal, I have developed a hydrogel conformal coating using a visible light-mediated interfacial thiol-ene photopolymerization. Unlike conventional chain-growth visible light polymerizations, no additional cytotoxic co-initiator or co-monomer was required in thiol-ene gelation scheme …
-
Isocyanate-derived organic aerogels: polyurethanes, polyureas, polyamides and polyimides
… crosslinking polymer has been assumed to form a conformal coating on the surface of the skeletal framework bridging covalently the elementary building blocks. However, the drawback of this method is the lengthy post-gelation crosslinking process. Since the exceptional mechanical properties of …
-
II-VI Core-Shell Nanowires: Synthesis, Characterizations and Photovoltaic Applications
… in photocurrent with faster response upon coating the core with the shell provides the evidence that the charge separation and collection in the type II core-shell nanowire is greatly improved. This demonstration brings much greater flexibility in designing next generation PV devices in …
-
Scalable corrosion resistant coatings for thermal applications
… with the use of an electrically insulating coating protecting the substrate. Thick millimetric coatings, such as paints, are generally more corrosion resistant when compared to nanoscale coatings. However, for thermal systems, thick coatings are undesirable due to the resulting decrease in …
-
Synthesis of graphene and h-BN by chemical vapor deposition and their transfer process
… reducing the density of wrinkles and enabling a conformal coating on uneven target substrates. The addressed questionings and proposed solutions in this thesis will provide criteria in the preparation of other 2-D materials beyond graphene and h-BN prepared by CVD processes.
-
Synthesis and electrochemical characterization of carbon nanotube forests on metal foils for battery electrodes
… the active material, iron phosphate (FP), conformally onto the CNTs using atomic layer deposition (ALD). The CNTs are grown on a multilayer catalyst-support structure consisting of an iron catalyst and alumina/tungsten support layer. This structure is shown to hinder the diffusion of copper …
-
Amine functionalization by initiated chemical vapor deposition (iCVD) for interfacial adhesion and film cohesion
… well-defined polymer films with tunable conformality and property. In this thesis work, amine functional iCVD poly(4-aminostyrene) (PAS) thin films were synthesized for the first time. The pendant amine groups enable the formation of a robust nanoadhesive with complementary epoxy …
-
A Nuclear Magnetic Resonance Approach Towards Understanding Surface Modification and its Influence on Ni-rich Layered Oxides in Li-ion Batteries
… this problem is surface modification with coating materials like Al<sub>2</sub>O<sub>3</sub> – cycling life is extended but the fundamental reasons behind the protection are not well understood. Therefore, the aim of the thesis is to identify the characteristics of coatings that contribute …
-
Layer-by-layer carbon nanotube electrodes for flexible chemical sensor and energy storage applications
… films without binder via the LbL technique. Conformal coating of MWNT films on individual electrospun fibers was achieved by applying a pressure gradient across the electrospun fiber mat to generate flow throughout the porous membrane during the spray-LbL deposition. The resulting MWNT films …
-
Thermal and Electrical Considerations for the Design of Highly-Integrated Point-of-Load Converters
… breakdown isolation are potential problems, dip conformal coating can easily be applied, replacing laborious solder masking. The work in this dissertation describes the fabrication methodology for Stacked Power, demonstrates the thermal advantages, and shows examples of high-frequency buck …
Page 1 of 2