Researchers at Harvard University have developed a way to quickly change the opacity of a glass window.
While we’ve seen the idea of ‘tunable’ windows before, previous methods have involved expensive electrochemical reactions which, while effective, aren’t much use for building a consumer product.
Now however scientists have come up with a cheaper and more effective alternative that is made from multiple layers of transparent, soft elastomers sprayed with a coating of silver nanowires.
When a voltage is applied the nanowires move towards one another, changing the opacity of the glass to make it clear, cloudy or opaque at the mere flick of a switch. – See more at: