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Showing 1 to 20 of 24 for “"contact angle measurement"”.
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Bi-modal hemispherical sensors for three axis force and contact angle measurement
… robots need to be able to accurately measure contact locations and forces. However, many existing sensors do not satisfy the stringent requirements or do not supply sufficient information for robotic locomotion and manipulation. This thesis builds on work by a previous PhD student, Meng Yee …
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Self-assembly of conformal polymer electrolyte film for lithium ion microbatteries
… surface energies, and then by measuring the contact angles of PEO on LCO in hexane and hexadecane, chosen for their immiscibility in PEO. For better comparison, these experiments were repeated using water instead of PEO, for a total of four systems tested. This data allowed an estimate for …
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Separation and characterization of crude oils and investigation of their wetting properties on rock surfaces
… method was chosen as an appropriate method for contact angle measurement because it involves the formation of a rigid film instead of the use of the oil withdrawal method or a moving needle. The contact angle measurement method has some limitations; for instance, sometimes data is not …
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Kontaktwinkelmessung an bovinem Zahnschmelz vor und nach der Behandlung mit kariesprophylaktischen Materialien und Methoden
… methods of caries prophylaxis were tested with contact angle measurement. The aim of the present study was to see, if there is any effect on the enamel surface after the caries prophylactic treatments. We used bovine incisors for contact angle measurement, embedded in light hardening polymer. 80 …
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Lanksčių anglinių nanovamzdelių dangų gamyba, modifikavimas ir tyrimas /
… Moreover, coatings were tested using a contact angle measurement method to determine the total surface energy and its components. Morphology of coatings was analysed by AFM and SEM. Besides, Raman spectroscopy and Raman spectroscopy mapping was used to characterize the coatings. …
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Measuring and Improving Copper-Polyimide Adhesion
"A contact angle measurement technique has been used to determine the thermodynamic adhesive strength between nano-sized copper clusters and polyimide. The copper clusters are formed under UHV conditions by using mono-layer per minute deposition rates to assist equilibrium cluster formation. Values …
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Development and implementation of nanoscale materials in engineering applications
… The surface made was exposed to contact angle measurement and X-ray photoelectron spectroscopy (XPS) to determine the status of the functionalization. Contact angle measurement confirmed the existence of a change in the surface chemistry but no hydrophobic surfaces were created as …
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Synthesis and Characterization of Pyrrole Based Adhesion Promoter Systems on Oxide Substrates
… Several analytical techniques such as contact angle measurement, surface plasmon resonance spectroscopy (SPR), UV-VIS Spectroscopy, grazing incident FTIR, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and atomic force microscopy (AFM) were employed to …
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Investigating the Surface Energy and Bond Performance of Compression Densified Wood
… Surface energy was studied using sessile drop contact angle measurement and the Chang model of acid-base, surface energy component calculation. Water, glycerol, formamide, ethylene glycol, and -Bromonapthalene were used as probe liquids. Densified and hygro-thermally treated yellow-poplar had …
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Korrosion von polykristallinem Aluminiumoxid (PCA) durch Metalljodidschmelzen sowie deren Benetzungseigenschaften
… water-free argon atmosphere was determined in a contact angle measurement apparatus. While pure salts show good or, at high temperatures, complete wetting, the surface wetting of binary salt mixtures is positively worse, even if only small amounts of the second component are present. From the …
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Fibre Modification for Concrete Reinforcement using a Novel Atmospheric Microwave Induced Plasma Torch (MIPT)
… characterisation of fibres was performed using contact angle measurement, scanning electron microscopy and atomic force microscope and the results are presented and analysed. Thus, the optimised plasma condition for each separate fibre is utilised. Fibres treated with optimised plasma condition …
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Investigation of the physical properties of cholesteryl ester liquid crystal and the interaction with cells
… of CELC were characterised by a custom built contact angle measurement system and bubble pressure measurement apparatus. Other methods such as pendant drop were applied to determine the critical surface tension of the CELC. Then, the characterization of the CELC was continued by using …
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A Study of Heat Transfer at the Cavity-Polymer Interface in Microinjection Moulding. The effects of processing conditions, cavity surface roughness and polymer physical properties on the heat transfer coefficient
… material characterisation, infra-red temperature measurements, cooling analysis and cooling prediction using commercial simulation software. To measure surface temperature of the polymers, compounding of polypropylene and polystyrene with carbon black masterbatch was performed to make materials …
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Relationship between molecular structure and surface properties of self-assembled monolayers
… reflection absorption infrared spectroscopy, contact angle measurement, ellipsometry, and electrochemical measurements. Reactions on the monolayers are used to model the attachment of an insulating polyimide to the substrate. The covalent attachment of the anhydride is confirmed, and the …
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Infululence of Polymer Nanoparticles on the Dewetting of Polymer Thin Films
… with the segregation layer observed by NR. Small angle neutron scattering showed that PS is miscible with the nanoparticles and no change in the surface energy was found by contact angle measurement at the polymer/air interface upon addition of nanoparticles. This suggests the segregation of …
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Enhancement of antifouling properties using rice husk silica particles in polysulfone membrane and optimization of its operating condition
… by using Atomic force microscopy (AFM) and contact angle measurement respectively. Meanwhile, the performance was evaluated in term of pure water flux (PWF), rejection and antifouling properties. The optimized of normalized flux (Jf /Jo) at different parameter filtration condition (pH, ionic …
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Characterization of polymeric membranes: sulfonated polysulfones
… as evidenced by water uptake and the contact angle of water on the membrane surface. The amount of water increased from 0.6% for polysulfone to 19.2% for sodium salt of sulfonated polysulfone with D.S. of 1.0, and 12.2% for potassium salt of sulfonated polysulfone with D.S. of 1.0. The …
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Micro-injection moulded microneedles for drug delivery.
… and surface energies have been obtained using contact angle measurement and calculated using Owens-Wendt theory. Adsorption performance of bovine serum albumin and release kinetics for each sample set was assessed using a Franz diffusion cell. Results indicate that plasma treatment …
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Micro-injection moulded microneedles for drug delivery.
… and surface energies have been obtained using contact angle measurement and calculated using Owens-Wendt theory. Adsorption performance of bovine serum albumin and release kinetics for each sample set was assessed using a Franz diffusion cell. Results indicate that plasma treatment …
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