CU Boulder researchers have developed a new type of malleable, self-healing and fully recyclable “electronic skin” that has applications ranging from robotics and prosthetic development to better biomedical devices.
Electronic skin, known as e-skin, is a thin, translucent material that can mimic the function and mechanical properties of human skin. A number of different types and sizes of wearable e-skins are now being developed in labs around the world as researchers recognize their value in diverse medical, scientific and engineering fields.
The new CU Boulder e-skin has sensors embedded to measure pressure, temperature, humidity and air flow, said Jianliang Xiao, an assistant professor in CU Boulder’s Department of Mechanical Engineering who is leading the research effort with Wei Zhang, an associate professor in CU Boulder’s Department of Chemistry and Biochemistry as well as a faculty member in the Materials Science and Engineering Program.
The technology has several distinctive properties, including a novel type of covalently bonded dynamic network polymer, known as polyimine that has been laced with silver nanoparticles to provide better mechanical strength, chemical stability and electrical conductivity.
“What is unique here is that the chemical bonding of polyimine we use allows the e-skin to be both self-healing and fully recyclable at room temperature,” said Xiao. “Given the millions of tons of electronic waste generated worldwide every year, the recyclability of our e-skin makes good economic and environmental sense.”
A paper on the subject was published today in the journal Science Advances. Co-authors on the study include Zhanan Zou and Yan Li of mechanical engineering and Chengpu Zhu and Xingfeng Lei of chemistry and biochemistry. The study was funded in part by the National Science Foundation.
Many people are familiar with the movie The Terminator, in which the skin of film’s main villain is “re-healed” just seconds after being shot, beaten or run over, said Zhang. While the new process is not nearly as dramatic, the healing of cut or broken e-skin, including the sensors, is done by using a mix of three commercially available compounds in ethanol, he said.
Another benefit of the new CU Boulder e-skin is that it can be easily conformed to curved surfaces like human arms and robotic hands by applying moderate heat and pressure to it without introducing excessive stresses.
“Let’s say you wanted a robot to take care of a baby,” said Zhang. “In that case you would integrate e-skin on the robot fingers that can feel the pressure of the baby. The idea is to try and mimic biological skin with e-skin that has desired functions.”
To recycle the skin, the device is soaked into recycling solution, making the polymers degrade into oligomers (polymers with polymerization degree usually below 10) and monomers (small molecules that can be joined together into polymers) that are soluble in ethanol. The silver nanoparticles sink to the bottom of the solution.
“The recycled solution and nanoparticles can then be used to make new, functional e-skin,” said Xiao.
The Latest on: E-skin
[google_news title=”” keyword=”e-skin” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]
via Google News
The Latest on: E-skin
- Ariana Grande's R.E.M. Beauty Sweetener Foundation Is a Hiton September 22, 2023 at 7:10 am
Our writer tried the R.E.M. Beauty Sweetener Foundation. Read the full makeup review with photos. The foundation is great for no-makeup makeup.
- The 15 Best Body Butters for Your Softest Skin Everon September 21, 2023 at 11:27 am
Known for their thick, velvety texture, these formulas offer hydration to tackle dryness, stretch marks, and beyond.
- E. Jean Carroll Says She Has 'Thinner Skin' After Sex Abuse Trial Against Donald Trump (Exclusive)on September 21, 2023 at 9:49 am
E. Jean Carroll tells PEOPLE that she has received an outpouring of love since defeating Donald Trump in a civil trial — in which a jury held the former president liable for sexual abuse and defamation.
- 6 Contour Products That Actually Work on Black Skinon September 21, 2023 at 9:30 am
Contour is an artform that takes your makeup look to the next level. “Contour gives the face shape and dimension,” salon owner Chimere Nicole told 21Ninety. “It will darken aspects of the face to allow the light to bounce off of lighter areas of the face.
- Nu Skin (NUS) Down More Than 25% in 3 Months: Here's Whyon September 21, 2023 at 8:55 am
Nu Skin Enterprises, Inc. NUS is grappling with an inflationary environment. The global integrated beauty and wellness company is operating amid challenging macroeconomic headwinds. The company’s strong international presence exposes it to the risk of volatile currency movements.
- Early Prime Day deal: Kate Middleton's affordable secret for glowing skin is down to $10on September 21, 2023 at 12:06 am
For a long time, Bio-Oil was the affordable beauty secret those in the know would use to diminish the look of scars and stretch marks or give skin an extra dose of hydration. It's certainly a favorite among celebrities,
- Khloe Kardashian opens up about skin cancer battle that changed the shape of her faceon September 20, 2023 at 11:02 am
Khloé Kardashian shared on Instagram that she first thought a mark on her face was a zit, but later turned out to be skin cancer.
- The best vitamin E products to nourish and protect skin, according to expertson September 8, 2023 at 10:19 am
Among skin care ingredients, vitamin E is a longtime staple. “It’s not particularly novel or buzzy like niacinamide, which has gotten a lot of attention lately, both by brand formulators and beauty media,” says Dr. Geeta Yadav, board-certified ...
via Bing News