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
- 2018 Forest River Georgetownon January 12, 2021 at 12:23 pm
Forest River Georgetown Class A #13059-1 with 1 photos for sale in Fort Myers, Florida 33905. See this unit and thousands more at RVUSA.com. Updated Daily.
- After Master leaked online, Prashanth Neel to Mari Selvaraj speak against piracyon January 11, 2021 at 9:20 pm
Prashanth Neel, Mari Selvaraj, SJ Suryah and several other celebrities spoke against piracy after clips from Vijay's Master leaked online. The Master team has filed a complaint regarding the same.
- Gotham Knights Has Redesigned Arkham’s Combat Systemon January 11, 2021 at 12:41 pm
The team behind the upcoming DC game may be taking some hints from the best Batman games, but they're taking the combat in bold new directions.
- How This F-22 Stealth Fighter Snuck Under an Iranian F-4 Fighteron January 10, 2021 at 6:06 am
Both Iran and America fly warplanes to warn each other not to try anything. Here is how the F-22 surprised an Iranian F-4. Back in 2013, Pentagon press secretary George Little said that an Iranian air ...
- China’s H-20 Stealth Bomber is 5 Years Away from Global Flightson January 9, 2021 at 12:14 pm
If the H-20 does have the range and passable stealth characteristics attributed to it, it could alter the strategic calculus between the United States and China.
- Xbox controllers not yet rechargeable due to deal with Duracell, spokesperson claimson January 7, 2021 at 7:58 am
A representative of Duracell UK has recently hinted that the reason Xbox consoles haven’t made the switch to rechargeable batteries yet is due to “a constant agreement” between Duracell and Microsoft.
- Cary Elwes Joins Guy Ritchie’s Spy Thriller ‘Five Eyes’on January 5, 2021 at 5:02 pm
Cary Elwes is set to star in the upcoming Miramax film. Miramax is re-teaming with director Guy Ritchie and star Jason Statham for the fourth film to make the spy thriller Five Eyes. The film was ...
- ‘White Lie’ Review: In Sickness and in Stealthon January 5, 2021 at 4:00 am
A young woman grows increasingly desperate to maintain the illusion of her illness in this restrained drama.
- Review: Turtle Beach Stealth 700 Gen 2 is a great PS5 headseton January 4, 2021 at 7:37 pm
While Sony has released its own branded PS5 headset, there's much more excitement about what's coming from third-party manufacturers like Logitech, Astro and Razer. Turtle Beach is one of the main ...
- That Time B-2A Spirit AV-3 Made An Emergency Landing On Rogers Dry Lake And Firetrucks Couldn’t Find Iton January 4, 2021 at 12:49 pm
This is the story of the B-2A Spirit AV-3 (Air Vehicle 3) and its emergency landing during a test flight. Today, we have become quite used to the shape of the B-2A Spirit, but more than 30 years ...
via Bing News