Uncovering the material dissipation mechanisms of two-dimensional materials is essential for their implementation in advanced devices. While graphene resonators are highly attractive due to their high operational frequency and excellent durability, they dissipate a considerable amount of energy due to significant material dissipation associated with atomic friction manifested by the relative slipping of atomic layers. We mitigate the atomic friction by changing the atomic composition of the devices through the insertion of boron and nitride atoms that create polar interlayer bonds and, therefore, also reduce the energy dissipation. As a case study, we built boron carbonitride (BCN) foam cantilever devices and studied their frequency responses compared to those of their graphene counterparts. Indeed, we show that inserting boron and nitride atoms into the lattice improves the interlayer interactions and, thus, reduces the interlayer atomic friction. In addition, the air dissipation of BCN is also lower than that of graphene. Therefore, we pave the path for the development of BCN devices with tunable dissipation.

中文翻译：

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通过引入氮化硼减轻石墨烯谐振器的能量耗散


揭示二维材料的材料耗散机制对于它们在先进器件中的实施至关重要。虽然石墨烯谐振器因其高工作频率和出色的耐用性而极具吸引力，但由于原子层的相对滑动表现为与原子摩擦相关的大量材料耗散，它们会耗散大量能量。我们通过插入硼和氮化物原子来改变器件的原子组成，从而产生极性层间键，从而减少能量耗散，从而减轻原子摩擦。作为一个案例研究，我们构建了碳氮化硼 （BCN） 泡沫悬臂装置，并研究了它们与石墨烯对应物的频率响应。事实上，我们表明，将硼和氮化物原子插入晶格中可以改善层间相互作用，从而减少层间原子摩擦。此外，BCN 的空气耗散也低于石墨烯。因此，我们为开发具有可调耗散的 BCN 器件铺平了道路。