Glass with variable transparency (smart glass) –
When 110 V, 50 Hz voltage is applied to the film, liquid crystals along the electric field lines recombine, the film begins to permit all light through and
When voltage is applied across the coatings, ions travel from one layer to another layer, prompting a reversible solid-state change that causes the coating to tint and absorb light. In other words, the glass gets darker. Reversing the polarity of the applied voltage causes the ions to migrate back to their original layer, untinting the glass.
Electric glass changes its properties mainly in response to a signal supplied by an electric current. Sometimes glass changes its properties on its own, in response to changes in temperature or light levels. This is how electric glass works. Smart glass is the brainchild of high technology and is a special electrochromic film based on liquid crystals.
Electric glass, also known as smart glass, is endowed with the following properties: it can change transparency, control the level of light in a room, replace curtains or blinds, ensure confidentiality, and provide protection against the negative effects of ultraviolet rays (in a transparent state).
To make electric glass with variable transparency, manufacturers use triplexing technology: They create a three-layer structure using sheets of ordinary glass or polycarbonate, with a polymer LCD film installed between the layers.
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