20 research outputs found
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Self-Closing and Self-Healing Multi-Material Suction Cups for Energy-Efficient Vacuum Grippers
While vacuum grippers offer an economical solution, the environmental impact of energy waste through their suction cups (SCs) cannot be overlooked. This waste stems from three key factors: i) air losses from idle SCs arranged in arrays, ii) inadequate sealing on target surfaces leading to air leaks, and iii) damage from sharp objects resulting in leaking perforations. To overcome these challenges, in this article, a comprehensive approach is presented that involves the development of a i) selfâclosing, ii) multiâmaterial, and iii) selfâhealing system based on reversible elastomers crossâlinked via the DielsâAlder (DA) reaction. The system incorporates a fully autonomous selfâclosing mechanism to prevent energy waste in SC arrays during periods of nonâcontact. Fluidâstructure interaction simulations are utilized to analyze the design. Versatility and stability are achieved by incorporating hyperâflexible and stiff elastomers in a multiâmaterial design, supported by covalent DA crossâlinks that ensure robustness through highâstrength multiâmaterial interfaces. These DA crossâlinks also enable selfâhealing capabilities, allowing the SCs to recover from macroscopic damages within 1 day at ambient conditions or in a single hour with mild heating (80â90â°C), restoring full performance. Additionally, in the article, a recycling method is introduced for multiâmaterial SCs based on the mechanical separation of reversible polymers.</jats:p
IgG1 heavy chain-coding gene polymorphism (G1m allotypes) and development of antibodies-to-infliximab.
International audienc