10.8: Smart Windows
- Page ID
- 50059
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Smart windows use a new technology called suspended particle devices (SPDs). They are small, light-absorbing microscopic particles or light valves. In smart windows, millions of the SPDs are placed between two panes of glass that are coated with conductive material.
- When the smart windows are turned "on," electricity from the control switch travels through the conductive coating and causes the SPDs to line up and allow the passage of light.
- When the smart windows are turned "off," no electricity travels through the conductive coating, so the particles float freely between the glass, causing it to appear darkened or tinted.
A similar technology using electrochromics is also being developed to improve windows.
The video below shows how the SPDs react.