Decoupling Heat and Electrical Conduction in Bilayer Graphene Through Wrinkling-Induced Phonon Hybridization.

ABSTRACT: 2D materials like graphene are renowned for their exceptional thermal and electrical properties, yet their performance can be significantly altered by structural irregularities such as wrinkles. While previous studies have reported modulation of thermal conductivity (κ) and electrical resistance (R) in wrinkled graphene, the results are often inconsistent or even contradictory, primarily due to challenges in experimentally disentangling geometric distortion from lattice strain. Here, a nearly zero-strain wrinkling strategy is introduced for bilayer graphene (BLG) and uncover a strikingly inverse anisotropic relationship: thermal conductivity perpendicular to the wrinkles (κ_⊥) is lower than that parallel to the wrinkles (κ_∥), whereas electrical resistance exhibits the

SUBMITTER: Fan A 

PROVIDER: S-EPMC12806555 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature