There is a need to find new paths for van der Waals 2D-systems detachment and transfer or to control their adhesion state in different environments. We have observed that supported multilayer graphene immersed in a fluid can be detached from a substrate through pressure application. The process is based on the development of wrinkles originated by the difference of in-plane-compressibility between the graphene stacks and the substrate. Graphene stacks comprised between 9 and 110 layers and immersed in various fluids allowed to investigate the growth and evolution of wrinkles with increasing pressure. The detachment from the substrate stops at the pressure-induced fluid solidification. Methanol, ethanol or their mixtures favor the pressure-induced wrinkle formation in SiO₂/Si substrates. In these cases, the pressure evolution of the delamination process follows a universal behavior independently of the number of graphene layers with a complete delamination at ∼4GPa. The quantitative analysis of the wrinkle geometry evolution can be consistently interpreted as due to a pressure-induced increase of the bending stiffness of the graphene stacks, or a reduction of the adhesion forces between the sample and the substrate, or both. These results should also be of practical use in high-pressure experiments of van der Waals systems.

需要为范德瓦尔斯 2D 系统的分离和转移找到新的路径，或者控制它们在不同环境中的粘附状态。我们已经观察到浸入流体中的支撑多层石墨烯可以通过施加压力从基板上分离。该过程是基于石墨烯堆叠和基板之间的平面内压缩性差异引起的皱纹的发展。石墨烯堆栈由 9 到 110 层组成，并浸入各种流体中，可以研究随着压力的增加皱纹的生长和演变。与基材的分离在压力诱导的流体凝固时停止。甲醇、乙醇或它们的混合物有利于在 SiO _{2 中}形成压力诱导的皱纹/Si 衬底。在这些情况下，分层过程的压力演变遵循普遍行为，独立于石墨烯层的数量，在~ 4GPa 时完全分层。皱纹几何演变的定量分析可以一致地解释为由于压力引起的石墨烯堆叠的弯曲刚度增加，或样品和基板之间的粘附力降低，或两者兼而有之。这些结果也应该在范德华系统的高压实验中具有实际用途。