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 19 of 19 for “"Polymeric thin films"”.
-
Mechanically flexible vapor-deposited polymeric thin films for electrochemical devices
… on the development of mechanically flexible thin-film materials for electrochemical devices, towards the achievement of self-powered wearable electronic systems. Initiated chemical vapor deposition (iCVD) and oxidative chemical vapor deposition (oCVD), which are non-destructive to fragile …
-
Initiated chemical vapor deposition of polymeric thin films : mechanism and applications
… (iCVD) is a novel technique for depositing polymeric thin films. It is able to deposit thin films of application-specific polymers in one step without using any solvents. Its uniqueness of in situ surface polymer synthesis distinguishes iCVD from conventional processes such as spin-on …
-
Polymeric thin films by chemical vapor deposition for the microelectronics industry
A new approach to the fabrication of polymeric thin films is presented. This approach, chemical vapor copolymerization (CVcP), has all the advantages of chemical vapor polymerization (CVP), including exceptional purity, highly conformal coatings, continuous films even when very thin, low stress, …
-
Chemical vapor deposition of conjugated polymeric thin films for photonic and electronic applications
… facilitating electrical conductivity. As thin films, they are integral to organic semiconductor devices emerging in the marketplace, such as flexible displays and plastic solar cells, as well as next-generation microphotonic chips. A major processing challenge is that these materials are …
-
Synthesis and Study of Stimuli-Responsive Fluorescent Polymeric Thin Films for Early Corrosion Detection by Directly Monitoring Iron Dissolution from Steel Substrates
<p>The successful measurement and prediction of material lifetimes is of high importance for proper maintenance on metal infrastructures for prevention of asset loss through corrosive processes. Current testing protocols include mismatched accelerated weathering techniques in combination with …
-
Biomedical applications of nanostructured polymer films
Functional polymeric thin films are often stratified with nanometer level structure and distinct purposes for each layer. These nanostructured polymeric materials are useful in a wide variety of applications including drug delivery, tissue engineering, controlling condensation and polymeric …
-
Chemical vapor deposition of antimicrobial polymer coatings
… low-temperature process, is used to form thin films of polymers on fragile substrates. To improve research efficiency, a new combinatorial iCVD system was fabricated and used to efficiently determine the deposition kinetics for two new polymeric thin films, poly(diethylaminoethylacrylate) …
-
The development of a thin-film rollforming process for pharmaceutical continuous manufacturing
… rollforming process for the folding of thin-films was proposed and studied as a key step in the continuous manufacturing of pharmaceutical tablets. HPMC and PEG based polymeric thin-films were considered for this application. An experimental apparatus was designed and developed to test …
-
Initiated chemical vapor deposition of fluoropolymer coatings for the surface modification of complex geometries
… soventless process that can be used to produce polymeric thin films. The iCVD technique has been used to polymerize a wide variety of vinyl monomers such as glycidyl methacrylate (adhesive) and 2-hydroxyethyl methacrylate (hydrophilic). The proposed polymerization mechanism is the classical free …
-
The Development of Ionophore-Selective Based optical chemical sensors for the determination of heavy metal ions in aqueous environments
… together with an ion carrier immobilised within polymeric thin films, i.e. hybrid sol-gel thin films, PVC membranes, ORMSOLs, and functionalised cellulose membranes. The developed test strips based on 2-(5-bromo-2-2pyridydylazo)-5-diethylaminophenol (Br-PADAP) immobilised on hybrid …
-
Analysis Methods and Characterization of the Electrical Properties of Nanostructured Particle-Containing Polymer Thin Films
<p>Polymeric thin film materials exhibit extreme electrical properties that can be difficult to measure in a repeatable fashion. The primary goal of this research was to establish a reliable method for categorizing the electrical properties of elastomeric thin film polymeric materials, including …
-
Studying and controlling chromophore orientation in polyelectrolyte layer-by-layer thin films
… technique that provides a mechanism for aligning polymeric materials as films are assembled. This eliminates the need for a post-processing alignment step and allows easier film construction. The fabrication technique for the polymeric thin films is layer-by-layer (LBL) electrostatic assembly. …
-
Tailoring Microenvironment and Orientation of Immobilized Lactase for Improved Catalysis at Suboptimal pH
… vapor deposition (iCVD) to fabricate tailored polymeric thin films as enzyme immobilization supports. A site-specific spycatcher/spytag system was employed for direct immobilization of lactase, while polycationic polymers were incorporated to modify the local chemical environment. Fourier …
-
ELECTRODEPOSITION OF POLYMER NETWORKS (EPON) AS CONFORMAL ULTRATHIN COATINGS
… energy storage devices, electrolyte-type polymeric interfaces between battery components such as the active electrode material and solid electrolyte could overcome some of these incompatibility detriments and the increase in contact resistance over long-term operation. However, existing …
-
Environmentally focused patterning and processing of polymer thin films by initiated chemical vapor deposition (iCVD) and oxidative chemical vapor deposition (oCVD)
… one step, solvent-free process for producing polymeric thin films This thesis describes the deposition of a novel low-k iCVD precursor, 1,3,5,7-tetravinyltetramethylcylcotetrasiloxane (V4D4). The high degree of organic content in the as-deposited film affords the ability to tune the film's …
-
Polyelectrolyte multilayer thin films with antimicrobial, antifouling and drug releasing properties
This thesis work focuses on designing thin polyelectrolyte multilayer (PEM) films via layer-bylayer (LbL) deposition technique with the ability to kill pathogenic bacteria and inactivate human viruses, especially the influenza (flu) virus on contact. This work builds on four years of research at …
-
Organic Self-Assembled Layer-by-Layer Thin Films for Second-Order Nonlinear Optics
… deposition techniques were used to fabricate films with second order nonlinear optical (NLO) properties. These materials are key to the development of electro-optic modulators used in fiber optic communication systems. Performance benefits and lower manufacturing costs are driving the …
-
Surface Chemical Functionalization based on Plasma Techniques
… by altering the surface functionalities or by thin film deposition allow us to create and optimize surfaces with desired chemical and physical properties suitable for subsequent biological evaluation and indeed, for such applications as the promotion of specific cell/protein responses to a …
-
Self- assembly of soft matter under 2D nanoconfinement
La possibilità di creare nano e microstrutture confinate, integrabili su larga scala, è stata per molti anni uno degli interessi centrali della nanotecnologia e della nanoscienza. L'obiettivo principale è quello di controllare e manipolare l'assemblaggio, al fine di ottenere strutture con le …