Hiding an object from heat-sensing cameras could be useful for military and technology applications as well as for research.
Efforts to develop such a method have been underway for decades with varying degrees of success. Now, researchers report in ACS Nano that they have fabricated an inexpensive, easy-to-produce film that makes objects completely invisible to infrared detectors.
Several prior systems have been developed to mask the difference in temperature between an object and its surroundings. But each of these alternatives has weaknesses, such as difficulty in making the devices, the need for a power supply, the use of rigid materials or the addition of thick and heavy thermal blankets that can lead to heat buildup. Xuetong Zhang and colleagues wanted to find a better way.
The researchers fabricated an aerogel film made of DuPont™ Kevlar® fibers. By itself, the aerogel turned out to be a good thermal insulator, but the researchers enhanced its capabilities by coating its fibers with polyethylene glycol (PEG) and a protective waterproof layer. PEG stores heat when it melts and releases heat when it solidifies. In simulated sunlight, the composite film covering an object soaked up heat from the sun while only slowly increasing in temperature, just like the surroundings, making the object invisible to a thermal camera. When the light was turned off to simulate night, the coating gradually surrendered its stored heat energy to match the surroundings. Without the coating, the object heated up or cooled off much faster than its environment, making it visible. In a second type of application, a combined structure consisting of aerogel films and the PEG composite film could hide hot targets from a thermal camera. The researchers say their film performs comparably to other stealth films but is simpler and cheaper to make.
Learn more: Now you see heat, now you don’t
The Latest on: Stealth films
via Google News
The Latest on: Stealth films
- Murmur, still in private beta, wants to help startups make private work agreements publicon March 1, 2021 at 7:03 pm
As building in public continues to gain popularity with early-stage startup founders, Murmur, coming out of stealth today, wants to leverage that natural transparency to a louder frequency. Founded by ...
- Dark Knight: 10 Ways Christopher Nolan Changed Batmanon February 27, 2021 at 5:41 pm
Christopher Nolan's take on Batman changed the character in several regards, rebooting a film franchise and making it grittier.
- Movie Guru: Three heart-warming family movies to stream on Netflix this weekendon February 27, 2021 at 8:02 am
Finding a family movie that works for both kids and adults can sometimes be a challenge. If you’ve been experiencing that same struggle, there are a small collection of streaming originals that might ...
- Chris Evans Reveals Which ‘Captain America’ Suit Is His Favoriteon February 26, 2021 at 9:14 pm
Chris Evans has become a household name thanks to the success of Marvel’s Captain America and Avengers franchises. Outside of Robert Downey Jr., he’s arguably the most recognizable face from the ...
- Stitch emerges from stealth with $4M for its API fintech play in Africaon February 25, 2021 at 2:13 am
Over the years, there has been a growing trend of fintech infrastructure players around the world. In Africa, a handful of startups have launched in the past three years to provide such services.
- PrivÃ© Collection's biggest Box Office movie of the year 'Stealth' airs this Friday on &PrivÃ©HDon February 24, 2021 at 9:25 pm
From the director of XXX and The Fast and The Furious comes an exhilarating epic blockbuster. Breath-taking from take-off, it thrusts you in the cockpit, hits Mach 5 and never looks back. Henry (Jamie ...
- Hitler's Secret 'Stealth' Jet: The Ho 229on February 24, 2021 at 5:31 pm
Northrop Grumman teamed up with the National Geographic channel to reconstruct a mockup of the Ho 229, which they tested for radar reflection, and then pitted against a simulation of the British Chain ...
- 10 Video Games Better Than The Movie They're Based Onon February 24, 2021 at 12:49 am
Arguably even more popular than the movie, its high octane thrills changed the landscape of action games for generations to come. Arriving with low expectations due to a poor display at the 1997 ...
- The best movies leaving Hulu at the end of Februaryon February 23, 2021 at 4:19 am
It's time to plan out your nights if you want to catch the very best movies leaving Hulu at the end of the month!
- Hood: Outlaws and Legends Interview – Setting, Progression, Classes, and Moreon February 22, 2021 at 11:37 pm
Our game pillars are Tactical, Stealth and Action." Stealth and combat are both clearly crucial parts of the central loop in Hood: Outlaws and Legends, but what kind of a balance does the game strike ...
via Bing News