Abstract: A removable shutter assembly includes a pair of brackets that is each attachable to an exterior wall of a building. Each of the brackets is positionable adjacent to a window in the exterior wall. Each of the brackets has a first panel that is perpendicularly oriented with a second panel. A shutter is positionable between the pair of brackets. The shutter has a pair of attachments movably integrated into the shutter. Each of the attachments is biased into an engaging condition to releasably engage a respective one of the brackets thereby facilitating the shutter to be quickly coupled to the pair of brackets. Each of the attachments is urgeable into a releasing condition to disengage the respective bracket thereby facilitating the shutter to be quickly removed from the pair of brackets.

Abstract: A film consisting of a titanium dioxide host matrix comprising silver oxide nanoparticles.