Abstract: The present invention discloses implantable devices that resist adhesion of colloidal particles such as are present in biological fluids, and methods for their manufacture. In a particular embodiment, the device may be an endovascular stent and a method for its production, for reducing, and preferably eliminating, restenosis. This objective is accomplished by recognizing the fundamental coupling between the surface texture and composition, on one hand, and the drag and adhesive forces acting on a colloidal particle, on the other. The surfaces of the device are first exposed to fluid flow whereby they are polished via a micro and/or nano-abrasive media so that they are featureless on length scales that are commensurate with the sizes of colloidal particles that initiate restenosis. Secondly, the surface is treated with a thin coating that reduces, or preferably eliminates, hydrogen bonding with colloidal particles.

Abstract: Non-reactive test agents may be used to test fire suppression systems in which reactive fire suppression agents may be used to release catalytic fire suppression agents for transport by naturally occurring flows paths downstream to the vicinity of flame holding regions for fire suppression for example, in aircraft.

Abstract: Fires may be detected and suppressed by placing fire detectors proximate natural flow paths from inlets to outlets of a fire zone. The fire detectors may be placed adjacent, and preferably downstream, of regions, along the flow paths, likely to become flame holding regions during fire in the fire zone. The fire may be suppressed, when detected, by catalytic reaction with species released by a reactive fire suppression agent which may be injected into the fire zone, preferably upstream of the potential flame holding regions.

Abstract: Reactive fire suppression transport agents may be used to release catalytic fire suppression agents, in reaction zones, which may then be transported by naturally occurring flows paths downstream to the vicinity of flame holding regions for fire suppression for example, in aircraft. The reactive fire suppression agents may be delivered in projectiles.