Researchers Develop Stretchable and Conductive Film for On-Skin Electronics

first_imgResearchers at  the RIKEN Thin-Film Device Laboratory have succeeded in producing a stretchable and conductive electronic material by combining polyurethane nanofibers with silver nanowires, making on-skin electronics a possibility.To be suitable for use as wearable electronics, a material needs to be both stretchable and conductive. It should also be breathable and durable. Finding a material that satisfies all four criteria is not easy. One promising strategy is to combine elastic polymer nanofibers with a network of conductive metal nanowires, but it is challenging to get the two components to bond tightly to each other.Importantly, the two components bond strongly to each other. There’s very good adhesion between the silver nanowires and the polyurethane nanofibers. This is why the team simultaneously achieved very good stretchability and conductivity. The team suspects that hydrogen bonds, the same bonds that hold pulp fibers together in a sheet of paper, are responsible for this good adhesion.The film could find use as electrical wiring that can be used on the skin. Its flexibility allows it to stretch when a person bends their elbow or knee, and it can be stretched to three times its initial length. In the same way, it could also be used for wiring on robots. Another potential use is as a sensor. As its conductivity changes when it is stretched, it can be used to detect movement. The team demonstrated this by using their film to monitor the angle of a bent wrist and detect a person’s pulse.The film has other advantages besides good stretchability and conductivity. When the researchers tested their film by stretching and releasing it 1,000 times, they observed that its conductivity dropped off only moderately, indicating that it has good durability. Furthermore, it is easy to fabricate. This film can be obtained by solution processes. That is very important for the mass production of the industrial product.Kenjiro Fukuda (one of the lead researchers on the project) notes that his team consists of researchers from different fields of expertise. Zhi Jiang brought his knowledge of stretchable nanowires to the project, while Fukuda and other team members supported the fabrication of the polymer nanomesh structures.The team intends to improve the stretchability of the material by using longer silver nanowires. They also plan to experiment with other combinations of materials and pursue applications of these breathable conductors in real-time health monitoring systems and soft robotics.last_img read more

Liverpool player was ‘one step away’ from joining Barca, reasons for…

first_imgAfter their failed efforts, the Reds ended up agreeing a fee with the Bundesliga outfit to bring the midfielder to Anfield in 2018.A ‘Top Secret’ report from Wednesday’s edition of Mundo Deportivo now claims the 24-year-old was ‘one step away’ from joining Barcelona in 2017.It’s claimed the La Liga winners’ former technical secretary Robert Fernandez held several meetings with the Guinea international’s agent, with the last one being in Barcelona, where it seemed they were all but set to seal a deal for him.However, Ernesto Valverde’s side found two obstacles – increase in the transfer fee and the player wanted to ‘feel both sporting and emotionally wrapped up in this new challenge’.Embed from Getty ImagesIn addition to this, the African demanded a net salary of €7m, which did not go down well with the Spanish champions.From the Camp Nou, neither Fernandez nor Valverde were ready to promise him a place in the starting XI as the decision to include him depended on his performance in training. This is when the contacts broke down. Keita will have an opportunity to hurt Barca when Liverpool face them in the first leg of the Champions League semi-final clash later Taboolaby TaboolaSponsored LinksSponsored LinksPromoted LinksPromoted LinksTrending TodayForge of Empires – Free Online GameWill You Build The Most Beautiful City?Forge of Empires – Free Online GameUndoRaid: Shadow Legends | Free DownloadEven Non-Gamers Are Obsessed With This RPG Game (It’s Worth Installing!)Raid: Shadow Legends | Free DownloadUndoDating.comFind out where single guys are hanging out in Tung ChungDating.comUndoPerfect-Dating.comThere Are Many Handsome Guys in Tung Chung Who Happen to Be Single!Perfect-Dating.comUndoKeto减肥1個簡單的妙招一夜「融化」腹部贅肉(今晚試試)Keto减肥Undo熱門話題小心會長過頭…網友推爆:「真的長得超誇張!」熱門話題UndoSingles50Hong Kong: A 40+ Dating Site That Actually Works!Singles50UndoCNN with DBS BankThe New Role Banks Are PlayingCNN with DBS BankUndoCoworking Space | Search AdsThe cost of shared office in Hong Kong might surprise youCoworking Space | Search AdsUndo Liverpool were keen on signing Naby Keita from RB Leipzig in the summer of 2017.last_img read more