The Direct Piezoelectric Effect in Deep Eutectic Solvents.

ABSTRACT: We report the direct piezoelectric response of four deep eutectic solvents (DESs): choline chloride:ethylene glycol (ChCl:EG), choline chloride:glycerol (ChCl:Gly), choline chloride:1,3-propanediol (ChCl:PD), and choline chloride:urea (ChCl:urea). Measurement of current as a function of applied force produces a linear relationship from which the piezoelectric coefficient (d₃₃) was determined. The piezoelectric effect has previously been observed in room-temperature ionic liquids (RTILs), attributable to a pressure-induced liquid-to-crystalline solid phase transition. The observation of this phenomenon in DESs is unprecedented and underscores its generality. The magnitude of d₃₃ in these DESs is similar to that for RTILs, suggesting the potential to tune

SUBMITTER: Stettler AM 

PROVIDER: S-EPMC12921850 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature