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  • The Manufacture of Unbreaka...
    Kadumudi, Firoz Babu; Hasany, Masoud; Pierchala, Malgorzata Karolina; Jahanshahi, Mohammadjavad; Taebnia, Nayere; Mehrali, Mehdi; Mitu, Cristian Florian; Shahbazi, Mohammad‐Ali; Zsurzsan, Tiberiu‐Gabriel; Knott, Arnold; Andresen, Thomas L.; Dolatshahi‐Pirouz, Alireza

    Advanced materials (Weinheim), 09/2021, Letnik: 33, Številka: 35
    Journal Article

    Biomaterials capable of transmitting signals over longer distances than those in rigid electronics can open new opportunities for humanity by mimicking the way tissues propagate information. For seamless mirroring of the human body, they also have to display conformability to its curvilinear architecture, as well as, reproducing native‐like mechanical and electrical properties combined with the ability to self‐heal on demand like native organs and tissues. Along these lines, a multifunctional composite is developed by mixing silk fibroin and reduced graphene oxide. The material is coined “CareGum” and capitalizes on a phenolic glue to facilitate sacrificial and hierarchical hydrogen bonds. The hierarchal bonding scheme gives rise to high mechanical toughness, record‐breaking elongation capacity of ≈25 000%, excellent conformability to arbitrary and complex surfaces, 3D printability, a tenfold increase in electrical conductivity, and a fourfold increase in Young's modulus compared to its pristine counterpart. By taking advantage of these unique properties, a durable and self‐healing bionic glove is developed for hand gesture sensing and sign translation. Indeed, CareGum is a new advanced material with promising applications in fields like cyborganics, bionics, soft robotics, human–machine interfaces, 3D‐printed electronics, and flexible bioelectronics. Biomaterials that transmit electricity like the human body can open new opportunities. For seamless mirroring of our anatomy, they also need to conform to its curvilinear architecture, and display self‐healing ability like native organs and tissues. To address this, a conductive, adhesive, reconfigurable, and viscoelastic gum (CareGum), with promising applications in cyborganics, bionics, and soft robotics, is developed.