凯发

Thispresentation examines the layer/thickness-dependent thermal transportproperties of two representative 2D materials - graphene and SnSe₂,focusing on their potential thermal management applications. Graphene's thermalconductivity exhibits notable non-monotonic behavior with increasing layernumbers. While monolayer graphene shows outstanding thermal conduction,additional layers lead to significant reduction in thermal conductivity,eventually reaching a stable value. This phenomenon relates closely tosuppressed interlayer electron transport. Particularly, within specific layerranges, graphene's heat dissipation capability may fall below that ofmonolayer. In contrast, SnSe₂ exhibits intrinsically low thermalconductivity that gradually increases with thickness. Experiments confirm thatsubstrate coupling effects and lattice structural changes significantlymodulate its thermal transport behavior. This work reveals fundamentalprinciples governing thermal transport in 2D materials, demonstrating thatprecise thermal regulation can be achieved through layer/thickness control andinterface engineering, thereby providing theoretical foundation for developingnext-generation 2D material-based thermal management solutions.