Blister test to measure the out-of-plane shear modulus of few-layer graphene†

IF 5.8 3区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Nanoscale Pub Date : 2024-12-11 DOI:10.1039/D4NR04214J
Metehan Calis, Narasimha Boddeti and J. Scott Bunch
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引用次数: 0

Abstract

We measure the out-of-plane shear modulus of few-layer graphene (FLG) by a blister test. During the test, we employed a monolayer molybdenum disulfide (MoS2) membrane stacked onto FLG wells to facilitate the separation of FLG from the silicon oxide (SiOx) substrate. Using the deflection profile of the blister, we determine an average shear modulus G of 0.97 ± 0.15 GPa, and a free energy model incorporating the interfacial shear force is developed to calculate the adhesion energy between FLG and SiOx substrate. The experimental protocol can be extended to other two-dimensional (2D) materials and layered structures (LS) made from other materials (WS2, hBN, etc.) to characterize their interlayer interactions. These results provide valuable insight into the mechanics of 2D nano devices which is important in designing more complex flexible electronic devices and nanoelectromechanical systems.

Abstract Image

Abstract Image

泡罩试验用于测量少层石墨烯的面外剪切模量
我们通过泡罩试验测量了少层石墨烯(FLG)的面外剪切模量。在测试过程中,我们将单层二硫化钼(MoS2)膜堆叠在FLG井上,以促进FLG与氧化硅(SiOx)衬底的分离。利用气泡的挠曲轮廓,我们确定了平均剪切模量G为0.97±0.15 GPa,并建立了包含界面剪切力的自由能模型来计算FLG与SiOx衬底之间的粘附能。实验方案可以扩展到其他二维(2D)材料和由其他材料(WS2, hBN等)制成的层状结构(LS),以表征它们的层间相互作用。这些结果为二维纳米器件的力学提供了有价值的见解,这对设计更复杂的柔性电子器件和纳米机电系统具有重要意义。
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来源期刊
Nanoscale
Nanoscale CHEMISTRY, MULTIDISCIPLINARY-NANOSCIENCE & NANOTECHNOLOGY
CiteScore
12.10
自引率
3.00%
发文量
1628
审稿时长
1.6 months
期刊介绍: Nanoscale is a high-impact international journal, publishing high-quality research across nanoscience and nanotechnology. Nanoscale publishes a full mix of research articles on experimental and theoretical work, including reviews, communications, and full papers.Highly interdisciplinary, this journal appeals to scientists, researchers and professionals interested in nanoscience and nanotechnology, quantum materials and quantum technology, including the areas of physics, chemistry, biology, medicine, materials, energy/environment, information technology, detection science, healthcare and drug discovery, and electronics.
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