Smartglass Can Fade From Translucent To Opaque In A Second

This smartglass goes from invisible to opaque in seconds. ESG Switchable is electrified privacy glass and can become opaque when you flip a switch. This is also known as switch glass or electrochromic glass. What's really happening when you switch the glass? The smartglass has a liquid crystal film between two panels and is transparent when the film is connected to electricity. When a switch is flipped, the connection breaks. The disordered liquid crystals make the glass opaque and this fractures incoming lights. ESG Switchable is available in a variety of colors. Getting some privacy is no longer a pain in the glass.

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(Source: Tech Insider,