Strong Adhesives Mediated by Dynamic Phase-Locking.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 42400885.
- Also identified by DOI 10.1002/adma.73976.
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Abstract
Nature has long inspired the design of reversible smart adhesives; however, achieving both high adhesion strength and switchability remains a significant challenge, particularly for emerging applications (e.g., soft robotics and wearable electronics). Herein, we introduce switchable phase-locking-mediated adhesives (SPAs) that leverage high-density hydrogen bonds to deliver ultrahigh adhesion (up to 15 MPa). The underlying mechanism involves dynamic phase-locking mediation that harmonizes interfacial adhesion with bulk cohesion through interfacial mechanical locking and strain-induced phase separation. This strategy optimizes performance across the complete adhesion lifecycle, including spreading, adhering, and debonding via temperature/force-mediated phase-locking. Through detailed molecular analysis of the SPA system, we uncover the mechanistic basis of ultrahigh adhesion and establish design guidelines applicable to future smart adhesive development.