OBJECTIVE To determine whether biofilm formation on silicone tympanostomy tubes (TTs) is prevented by polyvinylpyrrolidone (PVP) coating. DESIGN In vitro microbiologic study. SUBJECTS Silicone TTs with and without a PVP coating. INTERVENTION The TTs were exposed to blood or phosphate-buffered saline and cultured with Pseudomonas aeruginosa or Staphylococcus aureus. After 4 days, antibioti...

Nickel-palladium-gold-finished terminals are susceptible to creep corrosion. Excessive creep corrosion can result in device failure due to insulation resistance loss between adjacent terminals. The mixed flowing gas test has been demonstrated to produce creep corrosion on parts with nickel-palladium-gold finished terminals. Conformal coats are often used to protect printed wiring assemblies fro...

OBJECTIVE Formation of encapsulating, avascular fibrous tissue is deemed to decrease implant's biocompatibility and versatility. We investigated whether plasma-mediated collagen coating possesses the ability to enhance neovascularization in the vicinity of silicone implants. METHODS Plasma-treated collagen-I-coated silicone samples were placed into the dorsal skinfold chambers of female balb/...

Applications of carbon nanotubes (CNTs) like field emission displays, super-capacitors, and cell growth scaffolds can benefit from controllable embedding of the CNTs in a material such that the CNTs are anchored and protrude a desired length. We demonstrate a simple method for anchoring densely packed, vertically aligned arrays of CNTs into silicone layers using spin-coating, CNT insertion, cur...

Titanium is a successful biomaterial that possesses good biocompatibility. It is covered by a surface layer of titanium dioxide, and this oxide may play a critical role in inhibiting reactive oxygen species, such as peroxynitrite, produced during the inflammatory response. In the present study, titanium dioxide was coated onto silicone substrates by radio-frequency sputtering. Silicone coating ...

INTRODUCTION An elastomeric module with a polymeric coating has been developed to reduce the friction of sliding mechanics. This in-vitro study examined the stability of the coating and compared the frictional properties of coated modules with those of other common ligation methods. METHODS Six ligation methods (regular uncoated, slick [coated], conventional silver, easy-to-tie, silicone-impr...

Fouling release coatings are known to be ecofriendly and a good alternative the containing biocides. To improve their efficiency lifespan incorporation of additives seems required. Amphiphilic system as PEG-silicone have lower impact on environment. However, PEG oxidation in seawater impacts its lifespan. In this context, development new hydrophilic offers great potentiel. The objective study i...

This work involves the development of a novel siliconized epoxy interpenetrating coating system using epoxy resin as base, hydroxylterminated polydimethylsiloxane (HTPDMS) as modifier, -aminopropyltriethoxysilane ( -APS) as crosslinking agent and dibutyltindilaurate (DBTDL) as catalyst. Polyamidoamine and aromatic polyamine adduct were used as curing agents for the above coating systems. The th...

We study the spreading and fingering of drops of silicone oil on a rotating substrate for a range of rotation speeds and drop volumes. The spreading of the drop prior to the onset of fingering is found to follow the theoretically predicted time dependence, but with a large shift in time scale. For the full range of experimental parameters studied, the contact line becomes unstable and fingers d...