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’Melt in the body’ electronics devised 2012-09-27 0:00
Ultra-thin electronics that dissolve inside the body have been devised by scientists in the US and could be used for a range of medical roles.
The devices can "melt away" once their job is done, according to research published in the journal Science.
The technology has already been used to heat a wound to keep it free from infection by bacteria.
The components are made of silicon and magnesium oxide, and placed in a protective layer of silk.
The device dissolves when it comes into contact with water
It is part of a field termed "transient electronics" and comes from researchers who have already developed "electronic tattoos" - sensors that bend and stretch with the skin.
They described their vanishing devices as the "polar opposite" of traditional electronics, which are built to be stable and to last.
Getting the electronics to fade away in a controlled manner relies on two scientific developments - getting the electronics to dissolve at all and using a shell to control when that happens.
Silicon dissolves in water anyway. The problem is that the size of components in conventional electronics means it would take an eternity. The researchers used incredibly thin sheets of silicon, called a nanomembrane, which can dissolve in days or weeks.
The speed of melting is controlled by silk. The material is collected from silkworms, dissolved and then allowed to reform. Altering the way the dissolved silk crystallises changes its final properties - and how long the device will last.
John Rogers, a mechanical science and engineering professor at the University of Illinois, said: "It’s a new concept, so there are lots of opportunities, many of which we probably have not even identified yet."
He told the BBC one likely use would be in wounds after surgery.
"Infection is a leading cause of readmission, a device could be put in to the body at the site of surgery just before it is closed up," he said.
"But you would only need it for the most critical period around two weeks after surgery."
The team of researchers have tested on rats a device that heats a wound to kill off bugs.
EU Must Get Ready: UN Predicts 1.4 MILLION Migrants to Arrive in Next Two Years 2015-10-04 3:05 Comment: The UN know and encourage these kinds of numbers to come into Europe, see comment below the article for more.
The UN refugee agency (UNHCR) announced that it expects 700,000 migrants and refugees to reach Europe via the Mediterranean this year and predicted at least the same amount again in 2016.
A spokesman for UNHCR Adrian Edwards confirmed that the figures ...
Oops: Did CNN Just Admit the U.S. Is Working with ISIS? & The ISIS Conspiracy 2015-10-04 1:33 Because we wouldn't want Russia to have an accidental skirmish with the U.S.-led ISIS coalition, now would we?
The ISIS Conspiracy
By Brandon Martinez
The ISIS Conspiracy is a video series created by independent journalist and writer Brandon Martinez and is based on his book The ISIS Conspiracy: How Israel and the West Manipulate Our Minds Through Fear. In Part I Martinez ...
Sydney: Activists deliver petition to send refugees to PM's electorate 2015-10-04 0:19
Police confronted activists concerned with plans to resettle 12,000 Syrian refugees in Australia during a political stunt staged outside the house of Prime Minister Malcolm Turnbull in Sydney on September 27, 2015.
Watch the video here: Sydney: PM urged to resettle Muslim refugees in eastern suburbs
Members of the right-wing Party For Freedom delivered a petition urging the PM to resettle the ...
Jews In America Demand Washington Admit More Syrian â€śRefugeesâ€ť 2015-10-03 23:09 In what is becoming a re-occurring theme here on this website, the organized Jewish community in America is once again openly and self-righteously demanding the United States accept as â€śrefugeesâ€ť even more unskilled, uneducated, backwards people who have no ties to or affinity towards this country and its traditions.
As noted here recently, the organized international Jewish community, countless Jewish charities ...