Peptide-enhanced tough, resilient and adhesive eutectogels for highly reliable strain/pressure sensing under extreme conditions

• DOI: 10.1038/s41467-022-34522-z
• Publication Date: 2022-11-05T08:02:55Z
• Authors: Yan Zhang; Yafei Wang; Ying Guan; Yongjun Zhang
• Keywords: Deep eutectic solvent

Abstract Natural gels and biomimetic hydrogel materials have been able to achieve outstanding integrated mechanical properties due the gain of natural biological structures. However, nearly every structure relies on water as solvents or carriers, which limits possibility in extreme conditions, such sub-zero temperatures long-term application. Here, peptide-enhanced eutectic were synthesized by introducing α-helical “molecular spring” into deep solvent. The gel takes full advantage structure, achieving high tensile/compression, good resilience, superior fracture toughness, excellent fatigue resistance strong adhesion, while it also inherits benefits solvent solves problems volatilization freezing. This enables unprecedentedly long stable sensing human motion movement. electrical signal shows almost no drift even after 10,000 deformations for 29 hours −20 °C 80 temperature range.