Self-healing Circuits Could find Use in Aerospace, Automotive Industries
December 22, 2011 1:02 PM
comment(s) - last by
Self-healing circuit at work
(Source: university if Illinois)
Tiny capsules of liquid metal keep things chugging along
There are numerous reasons why a circuit inside a gadget or electronic device might break. The result of a broken circuit inside a device is generally the device won't function properly or won't work at all. A team of researchers at the University of Illinois has discovered a cool and seemingly easy way to allow the damaged circuit to repair itself before the user knows there is a problem.
The researchers include Scott White, an aerospace engineering professor, Nancy Sottos, a materials science and engineering professor, and Jeffrey Moore, a chemistry professor. The team have taken a normal circuit and placed tiny capsules along its length that are about ten microns in size. Inside those little capsules is a liquid metal. When the circuit breaks, the capsules do too. The liquid metal then leaks out into the crack and the circuit is healed in microseconds. The repaired circuit has 99% of the conductivity of the original.
“It [the liquid metal polymer capsules] simplifies the system,” said chemistry professor Jeffrey Moore, a co-author of the paper. “Rather than having to build in redundancies or to build in a sensory diagnostics system, this material is designed to take care of the problem itself.”
The idea of the self-healing capsules is for repairs in circuits that are hard to access for normal repairs. The researchers see potential for the self-healing circuits in aviation and spacecraft. The material may have used in automotive applications too. Hints have been dropped at self-healing properties similar to this for
on vehicles in other research. This sort of self-repair would also be a great help for flexible electronic devices that are prone to have circuits break over time.
"In general there’s not much avenue for manual repair,” Sottos said. “Sometimes you just can’t get to the inside. In a multilayer integrated circuit, there’s no opening it up. Normally you just replace the whole chip. It’s true for a battery too. You can’t pull a battery apart and try to find the source of the failure."
In the past, the team developed a similar system for polymer materials repair and then adapted that system for conductive systems. “What’s really cool about this paper is it’s the first example of taking the microcapsule-based healing approach and applying it to a new function,” White said. “Everything prior to this has been on structural repair. This is on conductivity restoration. It shows the concept translates to other things as well.”
This article is over a month old, voting and posting comments is disabled
Cost and manufacturing?
12/22/2011 10:47:13 PM
The application of this technology is appealing but it makes me wonder what the cost to manufacture it on a commerical scale would be. I can't imagine it would be cost effective (much like many other nanotechnologies at the moment) so it almost eliminates use in all industries except aerospace until a cheap way to manufacture can be found.
"When an individual makes a copy of a song for himself, I suppose we can say he stole a song." -- Sony BMG attorney Jennifer Pariser
New Polymeric Car Paint Can Self-Heal Major Scratches, Dings
April 22, 2011, 8:17 AM
Newly Discovered Costa Rican Glass Frog is Kermit's Doppelgänger
April 22, 2015, 11:26 AM
Researchers Hope to Find "Exotic" Lifeforms Inside Crater of Dinosaur Killing Meteor
April 14, 2015, 8:47 PM
Mathematician's Sociological Formulation May Explain the "Hipster Paradox"
April 14, 2015, 1:13 PM
Cool Science Video: This is What a McDonald's Burger Looks Like in Your Stomach
April 7, 2015, 1:43 PM
Fraud Artist Engineered Stunning UK Jailbreak Via Typosquatting, Email
April 4, 2015, 2:57 PM
Food Chemists at Italy's Barilla Claim to Have Perfect Instant Noodles w/out Frying
March 26, 2015, 4:25 PM
Most Popular Articles
Windows 10 Build 10061: A Quick Review
April 27, 2015, 10:57 AM
Ding Dong the Deal is Dead: What's Next After Failed Comcast/TWC Merger
April 28, 2015, 2:06 PM
Report: Apple Pulls the Plug on Apple Watch Store Launch
April 16, 2015, 3:18 PM
Quick Note: Lady Macbath -- One Japanese Woman's Apple Themed Revenge
April 23, 2015, 11:47 AM
After Record-Setting Week, Samsung Predicts 70 Million GS6/GS6 Edge Sales
April 17, 2015, 8:39 PM
Latest Blog Posts
Sceptre Airs 27", 120 Hz. 1080p Monitor/HDTV w/ 5 ms Response Time for $220
Dec 3, 2014, 10:32 PM
Costco Gives Employees Thanksgiving Off; Wal-Mart Leads "Black Thursday" Charge
Oct 29, 2014, 9:57 PM
"Bear Selfies" Fad Could Turn Deadly, Warn Nevada Wildlife Officials
Oct 28, 2014, 12:00 PM
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
More Blog Posts
Copyright 2015 DailyTech LLC. -
Terms, Conditions & Privacy Information