New Skin? A Plastic That Heals Itself, Conducts Electricity, and is Sensitive To Touch
Skin is a material with astonishing capabilities: the flexible, waterproof layer constantly regenerates itself, heals itself after scratches and cuts, and, through its nerves, conducts electricity, relaying the sense of touch to the brain. Engineers have long been trying to come up with a synthetic polymer that does all those things, and does them under standard conditions rather than the carefully calibrated set-up of a lab. Now engineers have created a polymer with a combination of skin’s most elusive attributes that no polymer had achieved before: This new material, reported in Nature Nanotechnology, can conduct electricity and, when it is sliced open with a razor, can heal itself at room temperature.
The material can come back together thanks to the hydrogen bonds, which break and reform easily and reversibly, connecting its molecules. Due to the addition of nickel particles, it can also conduct electricity. The researchers found that after the material was cut open, it regained 90 percent of its electrical conductivity within 15 seconds. What’s more, the material’s electrical resistance changes in response to pressure—giving this synthetic skin what is, essentially, a sense of touch. The material may eventually be used to make touch-sensitive prosthetic limbs. Meanwhile, the resilient, conductive material should aid in the development of better on-skin electronic devices, such as wearable heart-rate monitors.
Your Smartphone Broadcasts Your Entire Life To The Secret Service 2014 09 23
Intelligence services collect metadata on the communication of all citizens. Politicians would have us believe that this data doesn’t say all that much. A reader of De Correspondent put this to the test and demonstrated otherwise: metadata reveals a lot more about your life than you think.
Ton Siedsma is nervous. He made the decision weeks ago, but keeps postponing it. ...
Scots were tricked into voting ‘No’ – Salmond 2014 09 23
London politicians gulled Scottish voters out of independence by making a false “vow” to grant Glasgow extra powers, First Minister Alex Salmond has said. He also raised the prospect of another referendum, saying the break-up is inevitable.
Alex Salmond, leader of the ’Yes’ campaign and the outgoing head of the Scottish National Party (SNP), told the BBC’s Sunday Politics program that ...
The Most Terrifying Thing About Ebola 2014 09 23 The disease threatens humanity by preying on humanity.
Suspected Ebola patient Finda “Zanabo” prays over her sick family members before being admitted to the Doctors Without Borders Ebola treatment center on Aug. 21, 2014, near Monrovia, Liberia. Photo by John Moore/Getty Images
As the Ebola epidemic in West Africa has spiraled out of control, affecting thousands of Liberians, Sierra Leonians, and Guineans, ...
Man bitten by Ebola patient flown to Switzerland 2014 09 22
Swiss authorities say a male nurse who was bitten by an Ebola patient while working in West Africa has been flown to Switzerland as a precaution.
The health ministry says the unidentified man was working for an international organization in Sierra Leone when he was bitten by a child infected with Ebola on Saturday.
The ministry says the nurse was wearing protective ...