Skip to main content

Pulse technology uses electricity to defrost frozen windows in just one second

Nobody likes the winter ritual of defrosting windows on a cold morning. Thanks to an international team of researchers at the University of Illinois at Urbana-Champaign and Japan’s Kyushu University, however, such indignities may not hang around for too much longer. They have developed a new way of removing ice and frost from surfaces with impressive efficiency — requiring less than 1% of the energy and 0.01% of the time required for traditional defrosting methods. In addition to car windows, it could be used for other surfaces, such as defrosting airplanes.

“The work was motivated by the large energy efficiency losses of building energy systems and refrigeration systems due to the need to do intermittent defrosting,” UIUC researcher Nenad Miljkovic said in a statement. “The systems must be shut down, the working fluid is heated up, then it needs to be cooled down again. This eats up a lot of energy when you think of the yearly operational costs of running intermittent defrosting cycles.”

The system uses a pulse of high current. This creates a layer of water where the ice and surface meet. To make sure that the pulse hits its intended target, the researchers apply a thin coating of conductive film indium tin oxide (ITO). The rest then relies on gravity, which causes the ice to simply slide off. This could also be aided by air flow if necessary.

So far, the tech is still at the proof-of-concept stage. The scientists recently demonstrated how their approach works by using it to defrost a piece of glass cooled to temperatures as cold as minus 159.8 degrees Fahrenheit. These incredibly low air temperatures are colder than the coldest parts of Antarctica. Using their technology, the researchers were able to remove ice with one pulse lasting under one second.

These researchers are not the only ones working on a similar solution. At ETH Zurich in Switzerland, scientists have developed a solar-activated nanoscale-thick coating which captures sunlight and uses it to defrost windows rapidly. Meanwhile, at Virginia Tech, investigators have developed an innovative water-repellent aluminum surface which uses millions of tiny air pockets to significantly speed up thawing speeds. Hopefully it won’t be too much longer before one of these approaches finds its way to market.

The Urbana-Champaign and Kyushu University research was recently described in the journal Applied Physics Letters.

Editors' Recommendations

Luke Dormehl
I'm a UK-based tech writer covering Cool Tech at Digital Trends. I've also written for Fast Company, Wired, the Guardian…
Digital Trends’ Top Tech of CES 2023 Awards
Best of CES 2023 Awards Our Top Tech from the Show Feature

Let there be no doubt: CES isn’t just alive in 2023; it’s thriving. Take one glance at the taxi gridlock outside the Las Vegas Convention Center and it’s evident that two quiet COVID years didn’t kill the world’s desire for an overcrowded in-person tech extravaganza -- they just built up a ravenous demand.

From VR to AI, eVTOLs and QD-OLED, the acronyms were flying and fresh technologies populated every corner of the show floor, and even the parking lot. So naturally, we poked, prodded, and tried on everything we could. They weren’t all revolutionary. But they didn’t have to be. We’ve watched enough waves of “game-changing” technologies that never quite arrive to know that sometimes it’s the little tweaks that really count.

Read more
Digital Trends’ Tech For Change CES 2023 Awards
Digital Trends CES 2023 Tech For Change Award Winners Feature

CES is more than just a neon-drenched show-and-tell session for the world’s biggest tech manufacturers. More and more, it’s also a place where companies showcase innovations that could truly make the world a better place — and at CES 2023, this type of tech was on full display. We saw everything from accessibility-minded PS5 controllers to pedal-powered smart desks. But of all the amazing innovations on display this year, these three impressed us the most:

Samsung's Relumino Mode
Across the globe, roughly 300 million people suffer from moderate to severe vision loss, and generally speaking, most TVs don’t take that into account. So in an effort to make television more accessible and enjoyable for those millions of people suffering from impaired vision, Samsung is adding a new picture mode to many of its new TVs.
[CES 2023] Relumino Mode: Innovation for every need | Samsung
Relumino Mode, as it’s called, works by adding a bunch of different visual filters to the picture simultaneously. Outlines of people and objects on screen are highlighted, the contrast and brightness of the overall picture are cranked up, and extra sharpness is applied to everything. The resulting video would likely look strange to people with normal vision, but for folks with low vision, it should look clearer and closer to "normal" than it otherwise would.
Excitingly, since Relumino Mode is ultimately just a clever software trick, this technology could theoretically be pushed out via a software update and installed on millions of existing Samsung TVs -- not just new and recently purchased ones.

Read more
AI turned Breaking Bad into an anime — and it’s terrifying
Split image of Breaking Bad anime characters.

These days, it seems like there's nothing AI programs can't do. Thanks to advancements in artificial intelligence, deepfakes have done digital "face-offs" with Hollywood celebrities in films and TV shows, VFX artists can de-age actors almost instantly, and ChatGPT has learned how to write big-budget screenplays in the blink of an eye. Pretty soon, AI will probably decide who wins at the Oscars.

Within the past year, AI has also been used to generate beautiful works of art in seconds, creating a viral new trend and causing a boon for fan artists everywhere. TikTok user @cyborgism recently broke the internet by posting a clip featuring many AI-generated pictures of Breaking Bad. The theme here is that the characters are depicted as anime characters straight out of the 1980s, and the result is concerning to say the least. Depending on your viewpoint, Breaking Bad AI (my unofficial name for it) shows how technology can either threaten the integrity of original works of art or nurture artistic expression.
What if AI created Breaking Bad as a 1980s anime?
Playing over Metro Boomin's rap remix of the famous "I am the one who knocks" monologue, the video features images of the cast that range from shockingly realistic to full-on exaggerated. The clip currently has over 65,000 likes on TikTok alone, and many other users have shared their thoughts on the art. One user wrote, "Regardless of the repercussions on the entertainment industry, I can't wait for AI to be advanced enough to animate the whole show like this."

Read more