Electronics Assembly Knowledge, Vision & Wisdom
Advances In Smart Glass
Advances In Smart Glass
Engineers recently developed dynamic windows for planes, cars, homes and buildings, that can switch from transparent to opaque and back, in under a minute.
Technology Briefing
Technology Briefing is brought to you by association with Audio-Tech, publishers of critically acclaimed programs including: Trends Magazine.

Subscribe to their monthly reports and learn about big ideas, new products, new management techniques, breakthrough concepts, and trailblazing technologies.
Submit A Comment
Comments are reviewed prior to posting. You must include your full name to have your comments posted. We will not post your email address.

Your Name

Your Company

Your E-mail

Your Country

Your Comment


Stanford University engineers recently developed dynamic windows for airplanes, cars, homes, and commercial buildings, that can switch from transparent to opaque, and back again, in under a minute. And, they do not degrade over time.

The prototypes are plates of conductive glass outlined with metal ions that spread out over the surface, blocking light, in response to electrical current. The group recently filed a patent for the work, published August 9, in the journal Joule.

Dynamic windows have the potential to transform our homes, businesses, cars, and more, reducing heating and cooling costs or the need for blinds. But, while some dynamic windows already exist, they have not succeeded in the marketplace. Why?

Existing smart windows, such as those used on some airlines, are made of materials, such as tungsten oxide, that change color when charged with electricity. But these materials tend to be expensive, have a blue tint, and they take over twenty minutes to dim. They also become less opaque after extended usage.

The Stanford prototype represents a completely new and different solution. It blocks light through the movement of copper and another metal in a solution over a sheet of transparent indium tin oxide modified by platinum nanoparticles. When transparent, the windows are clear and allow about 80 percent of surrounding natural light through, and when dark, transmission drops to under 5 percent. In tests, the researchers switched the windows on and off over 5,500 times and saw no change in the transmission of light, indicating that the design is durable.

There is still work to do before scaling up for commercial applications. For instance, the prototypes are now limited in how much area they can cover, but there are plans to address this problem. The group also wants to cut the cost of the windows so that they are less than half the cost of any dynamic windows that are already on the market.

Such dynamic window technology has the potential to optimize the lighting in rooms or vehicles, save about 20 percent in heating and cooling costs, and even change the way people wear sunglasses.

No comments have been submitted to date.
Free Newsletter Subscription
Every issue of the Circuit Insight email newsletter will bring you the latest information on the issues affecting you and your company.

Insert Your Email Address

Directory Search

Program Search
Related Programs
bullet The Brave New World Comes to California
bullet Why AI Isn't the Death of Jobs
bullet Ultra-low Power Injectable Biosensors
bullet 3D Printed Food
bullet Ultra-Thin Artificial Retina
bullet Will AI Make Doctors Obsolete?
bullet The 5G Future Is Almost Here
bullet 3D Stretchable Circuits
bullet Medical Device Artificial Intelligence
bullet Self-Driving Vehicles: From Prototypes to Commercial Success
More Related Programs